CVE-2024-21302
Microsoft Windows Virtualization Based Security Elevation of Privilege Vulnerability
Description
Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security... See more at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302
INFO
Published Date :
Aug. 8, 2024, 2:15 a.m.
Last Modified :
Sept. 18, 2024, 12:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2024-21302 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2024-21302
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-21302.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302 | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-21302 vulnerability anywhere in the article.
-
Cybersecurity News
Driver Signature Enforcement Cracked: OS Downgrade Attacks Possible on Windows
Downgrading only ci.dll to its unpatched version works well against a fully patched Windows 11 23h2 machine | Image: SafeBreachSafeBreach specialist Alon Leviev has discovered that attackers can explo ... Read more
-
Dark Reading
Windows 'Downdate' Attack Reverts Patched PCs to a Vulnerable State
Source: willi Lumintang via ShutterstockFully patched Windows 11 systems are vulnerable to attacks that allow an adversary to install custom rootkits that can neutralize endpoint security mechanisms, ... Read more
-
The Hacker News
Researchers Uncover OS Downgrade Vulnerability Targeting Microsoft Windows Kernel
A new attack technique could be used to bypass Microsoft's Driver Signature Enforcement (DSE) on fully patched Windows systems, leading to operating system (OS) downgrade attacks. "This bypass allows ... Read more
-
TheCyberThrone
Windows Downdate attack lets downgrade OS to Vulnerable version
A researcher from SafeBreach Labs uncovered a new attack technique that could compromise the security of fully patched Windows 11 systems.The attack was reported in August 2024 at Black Hat USA 2024 a ... Read more
-
Cybersecurity News
Faraday: Open Source Vulnerability Management Platform
In today’s complex cybersecurity landscape, security teams face the dual challenge of uncovering new vulnerabilities and efficiently managing remediation efforts. Faraday emerges as a powerful solutio ... Read more
-
Cybersecurity News
BadIIS Malware : 35+ IIS Servers Compromised in DragonRank Campaign
A recent report from Cisco Talos has exposed a new threat actor named DragonRank, a Chinese-speaking group specializing in SEO manipulation and cyberattacks. This group operates by exploiting vulnerab ... Read more
-
Help Net Security
September 2024 Patch Tuesday forecast: Downgrade is the new exploit
I asked for a calm August 2024 Patch Tuesday in last month’s forecast article and that came to pass. The updates released were limited to the regular operating systems and all forms of Office applicat ... Read more
-
Cybersecurity News
ECDSA Vulnerability in YubiKey: What You Need to Know
OLYMPUS DIGITAL CAMERAIn a recent security advisory, Yubico disclosed a moderate vulnerability (CVE-2024-45678) affecting several of its hardware security devices, including the widely-used YubiKey 5 ... Read more
-
Cybersecurity News
CISA Issues Alert: Three Actively Exploited Vulnerabilities Demand Immediate Attention
The Cybersecurity and Infrastructure Security Agency (CISA) has added three critical vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, highlighting their active exploitation in the ... Read more
-
BleepingComputer
Windows Downdate tool lets you 'unpatch' Windows systems
SafeBreach security researcher Alon Leviev has released his Windows Downdate tool, which can be used for downgrade attacks that reintroduce old vulnerabilities in up-to-date Windows 10, Windows 11, an ... Read more
-
Cybersecurity News
CVE-2024-7272: Critical Heap Overflow Vulnerability Discovered in FFmpeg, PoC Published
A critical security vulnerability, identified as CVE-2024-7272, has been uncovered in FFmpeg, the world’s leading multimedia framework renowned for its ability to decode, encode, and stream nearly any ... Read more
-
Kaspersky
Windows Downdate: exploitation techniques and countermeasures
All software applications, including operating systems, contain vulnerabilities, so regular updates to patch them are a cornerstone of cybersecurity. The researchers who invented the Windows Downdate ... Read more
-
Cyber Security News
PoC Exploit Released for Windows 0-Day Downgrade Attack
A proof-of-concept (PoC) exploit has been publicly released for a pair of critical zero-day vulnerabilities in Microsoft Windows that enable a novel “downgrade attack.” The flaws tracked as CVE-2024-3 ... Read more
-
Cybersecurity News
PoC Exploit for Windows 0-Day Flaws CVE-2024-38202 and CVE-2024-21302 Released
Researchers have published the technical details and proof-of-concept (PoC) exploit code for two critical zero-day vulnerabilities in Windows, tracked as CVE-2024-38202 and CVE-2024-21302. These vulne ... Read more
-
Cybersecurity News
Windows TCP/IP Vulnerability CVE-2024-38063: Researchers Hold Back Exploit Details Due to High Risk
In a recent August Patch Tuesday, Microsoft urgently addressed a critical security vulnerability within the Windows TCP/IP stack, identified as CVE-2024-38063. With a CVSS score of 9.8, this flaw has ... Read more
-
Cybersecurity News
Adobe Issues Critical Security Updates for Commerce and Magento Platforms
Adobe has released a critical security update for its widely-used e-commerce platforms, Adobe Commerce and Magento Open Source. The update addresses a range of vulnerabilities, some of which could all ... Read more
-
Cybersecurity News
CISA Warns Critical Vulnerabilities in Vonets WiFi Bridge Devices, No Patch Available
The Cybersecurity and Infrastructure Security Agency (CISA) has issued a security advisory detailing multiple critical vulnerabilities discovered in Vonets WiFi Bridge devices. These vulnerabilities, ... Read more
-
crowdstrike.com
August 2024 Patch Tuesday: Six Zero-Days and Six Critical Vulnerabilities Amid 85 CVEs
Microsoft has released security updates for 85 vulnerabilities in its August 2024 Patch Tuesday rollout. These include six actively exploited zero-days (CVE-2024-38213, CVE-2024-38193, CVE-2024-38189, ... Read more
-
security.nl
Microsoft dicht zes actief misbruikte kwetsbaarheden in Office en Windows
Tijdens de patchdinsdag van augustus heeft Microsoft zes kwetsbaarheden in Office en Windows verholpen die actief zijn misbruikt voordat de updates beschikbaar waren. Drie van de beveiligingslekken ma ... Read more
-
The Cyber Express
Microsoft Tackles 9 Zero-Day Exploits in August 2024 Patch Tuesday Update
Microsoft has released its August 2024 Patch Tuesday update, addressing multiple vulnerabilities across its software ecosystem. This month’s update features fixes for a total of 90 vulnerabilities, in ... Read more
-
The Hacker News
Microsoft Issues Patches for 90 Flaws, Including 10 Critical Zero-Day Exploits
Windows Security / Vulnerability Microsoft on Tuesday shipped fixes to address a total of 90 security flaws, including 10 zero-days, of which six have come under active exploitation in the wild. Of th ... Read more
-
TheCyberThrone
Microsoft Patch Tuesday-August 2024
Microsoft patched 90 CVEs in its August 2024 Patch Tuesday release, with seven rated critical, 82 rated as important, and one rated as moderate.This includes updates for vulnerabilities in Microsoft O ... Read more
-
Cybersecurity News
CISA & Microsoft Warn of 6 Actively Exploited Zero-Day Vulnerabilities
Microsoft’s August 2024 Patch Tuesday release addresses 88 vulnerabilities, including seven critical flaws and 10 zero-day vulnerabilities. Among these, six are currently being actively exploited in t ... Read more
-
The Register
Patch Tuesday brings 90 new Microsoft CVEs, six already under exploit
Patch Tuesday Microsoft has disclosed 90 flaws in its products – six of which have already been exploited – and four others that are listed as publicly known. There's another dozen in the list from th ... Read more
-
Dark Reading
Microsoft Discloses 10 Zero-Day Bugs in Patch Tuesday Update
Source: CC Photo Labs via ShutterstockAttackers are actively exploiting as many as six of the 90 vulnerabilities that Microsoft disclosed in its security update for August, making them a top priority ... Read more
-
Help Net Security
Microsoft fixes 6 zero-days under active attack
August 2024 Patch Tuesday is here, and Microsoft has delivered fixes for 90 vulnerabilities, six of which have been exploited in the wild as zero-days, and four are publicly known. The zero-days under ... Read more
-
Cybersecurity News
QuickShell Security Flaw Exposes Google Quick Share Users to Remote Attacks
Image Credit: SafeBreach LabsGoogle’s Quick Share, a popular tool for file sharing across Android, Windows, and Chrome OS devices, has recently come under scrutiny following the discovery of serious s ... Read more
-
Cybersecurity News
Dark Skippy: New Threat Steals Secret Keys from Signing Devices
A serious security threat called Dark Skippy has emerged in the cryptocurrency world. This method allows malicious actors to extract private keys from transaction signing devices, such as hardware wal ... Read more
-
The Hacker News
Microsoft Warns of Unpatched Office Vulnerability Leading to Data Exposure
Vulnerability / Enterprise Security Microsoft has disclosed an unpatched zero-day in Office that, if successfully exploited, could result in unauthorized disclosure of sensitive information to malicio ... Read more
-
The Cyber Express
Downgrade Attacks Could Affect Fully Updated Windows Systems With Previously Patched Vulnerabilities
A security researcher has uncovered a new threat within the Windows operating system that challenges the very notion of a fully-patched system. The new threat demonstrated by the researcher-built tool ... Read more
-
The Hacker News
Windows Downgrade Attack Risks Exposing Patched Systems to Old Vulnerabilities
Windows Security / Vulnerability Microsoft said it is developing security updates to address two loopholes that it said could be abused to stage downgrade attacks against the Windows update architectu ... Read more
-
Help Net Security
“Perfect” Windows downgrade attack turns fixed vulnerabilities into zero-days
A researcher has developed a downgrade attack that can make Windows machines covertly, persistently and irreversibly vulnerable, even if they were fully patched before that. A downgrade attack exploit ... Read more
-
security.nl
Windows kwetsbaar voor downgrade-aanval via Windows Update
Windows is kwetsbaar voor een downgrade-aanval, waarbij een aanvaller die toegang tot een systeem heeft via Windows Update aanwezige patches permanent kan verwijderen. Het besturingssysteem denkt na d ... Read more
-
Cyber Security News
Windows Zero-day Flaw Let Hackers Downgrade Fully Updated Systems to Old Vulnerabilities
Every software and operating system vendor has been implementing security measures to protect their products. This is because threat actors require a lot of time to find a zero-day but less time to fi ... Read more
-
The Register
Your victim's Windows PC fully patched? Just force undo its updates and exploit away
Black Hat Techniques to forcibly remove security patches from Windows machines so that fixed vulnerabilities are exploitable again were demonstrated this week. These methods are a handy means for rogu ... Read more
-
Cybersecurity News
Zero-Day Vulnerability: 18 Years of Exploiting the ‘0.0.0.0’ Flaw
A study revealed a hidden vulnerability that has plagued the world’s largest browsers for 18 years, leaving private and corporate networks susceptible to cyberattacks. Researchers from Oligo Security ... Read more
-
Cybersecurity News
CVE-2024-21302, CVE-2024-38202: Zero-Day Vulnerabilities Expose Windows Systems to “Unpatching” Attacks
At Black Hat 2024, security researcher Alon Leviev from SafeBreach security researcher unveiled two zero-day vulnerabilities (CVE-2024-21302, CVE-2024-38202) that could be exploited to reverse patches ... Read more
-
BleepingComputer
Windows Update downgrade attack "unpatches" fully-updated systems
SafeBreach security researcher Alon Leviev revealed at Black Hat 2024 that two zero-days could be exploited in downgrade attacks to "unpatch" fully updated Windows 10, Windows 11, and Windows Server s ... Read more
-
The Register
Your Windows updates can all be downgraded, says security researcher
Black Hat Security researchers from SafeBreach have found what they say is a Windows downgrade attack that's invisible, persistent, irreversible and maybe even more dangerous than last year's BlackLot ... Read more
The following table lists the changes that have been made to the
CVE-2024-21302 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Sep. 18, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security... See more at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302 -
Initial Analysis by [email protected]
Sep. 12, 2024
Action Type Old Value New Value Changed Reference Type https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302 No Types Assigned https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302 Patch, Vendor Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.10240.20710 *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.10240.20710 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.7259 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.7259 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.6189 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19044.4780 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19045.4780 *cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22000.3147 *cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22621.4037 *cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22631.4037 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.26100.1457 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26100.1457 *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.7259 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.6189 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.2655 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.25398.1085 -
CVE Modified by [email protected]
Aug. 16, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this... -
CVE Modified by [email protected]
Aug. 15, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to security updates once available. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... -
CVE Modified by [email protected]
Aug. 14, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to security updates once available. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... -
CVE Modified by [email protected]
Aug. 13, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn.. Microsoft is developing a security update to mitigate this vulnerability, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, Windows Server 2022 , and a subset of Azure Virtual Machines (VM) SKUs with a Windows based guestOS supporting VBS. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. See Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center. Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 07th, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section of this CVE to protect their systems. Recommended Actions: The following recommendations do not mitigate the vulnerability but can be used to reduce the risk of exploitation until the security update is available. Configure “Audit Object Access” settings to monitor attempts to access files, such as handle creation, read / write operations, or modifications to security descriptors. Audit File System - Windows 10 | Microsoft Learn Apply a basic audit policy on a file or folder - Windows 10 | Microsoft Learn Auditing sensitive privileges used to identify access, modification, or replacement of VBS related files could help indicacte attempts to exploit this vulnerability. Audit Sensitive Privilege Use - Windows 10 | Microsoft Learn Protect your Azure tenant by investigating administrators and users flagged for risky sign-ins and rotating their credentials. Investigate risk Microsoft Entra ID Protection - Microsoft Entra ID Protection | Microsoft Learn Enabling Multi-Factor Authentication can also help alleviate concerns about compromised accounts or exposure. Enforce multifactor... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS), including a subset of Azure Virtual Machine SKUS. This vulnerability enables an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Update: August 13, 2024 Microsoft has released the August 2024 security updates that include an opt-in revocation policy mitigation to address this vulnerability. Customers running affected versions of Windows are encouraged to review KB5042562: Guidance for blocking rollback of virtualization-based security related updates to assess if this opt-in policy meets the needs of their environment before implementing this mitigation. There are risks associated with this mitigation that should be understood prior to applying it to your systems. Detailed information about these risks is also available in KB5042562. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, and higher based systems including Azure Virtual Machines (VM) that support VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. For more information see Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 7, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section to protect their systems. Recommended Actions: Microsoft has released an opt-in mitigation available as an interim solution to help protect customers concerned about this vulnerability until the final mitigation is available in a security update. For Windows 10 1809 and later, Windows 11 version 21H2 and later, and Windows Server 2019 and later, administrators can deploy a Microsoft-signed revocation policy (SkuSiPolicy.p7b) to block vulnerable, unpatched versions of VBS system files from being loaded by the operating system. For more information, refer to KB5042562: Guidance for blocking rollback of virtualization-based security related... -
CVE Modified by [email protected]
Aug. 12, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn.. Microsoft is developing a security update to mitigate this vulnerability, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, Windows Server 2022 , and a subset of Azure Virtual Machines (VM) SKUs with a Windows based guestOS supporting VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. See Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center. Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 07th, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section of this CVE to protect their systems. Recommended Actions: The following recommendations do not mitigate the vulnerability but can be used to reduce the risk of exploitation until the security update is available. Configure “Audit Object Access” settings to monitor attempts to access files, such as handle creation, read / write operations, or modifications to security descriptors. Audit File System - Windows 10 | Microsoft Learn Apply a basic audit policy on a file or folder - Windows 10 | Microsoft Learn Auditing sensitive privileges used to identify access, modification, or replacement of VBS related files could help indicacte attempts to exploit this vulnerability. Audit Sensitive Privilege Use - Windows 10 | Microsoft Learn Protect your Azure tenant by investigating administrators and users flagged for risky sign-ins and rotating their credentials. Investigate risk Microsoft Entra ID Protection - Microsoft Entra ID Protection | Microsoft Learn Enabling Multi-Factor Authentication can also help alleviate concerns about compromised accounts or exposure. Enforce multifactor... Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn.. Microsoft is developing a security update to mitigate this vulnerability, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, Windows Server 2022 , and a subset of Azure Virtual Machines (VM) SKUs with a Windows based guestOS supporting VBS. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. See Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center. Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 07th, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section of this CVE to protect their systems. Recommended Actions: The following recommendations do not mitigate the vulnerability but can be used to reduce the risk of exploitation until the security update is available. Configure “Audit Object Access” settings to monitor attempts to access files, such as handle creation, read / write operations, or modifications to security descriptors. Audit File System - Windows 10 | Microsoft Learn Apply a basic audit policy on a file or folder - Windows 10 | Microsoft Learn Auditing sensitive privileges used to identify access, modification, or replacement of VBS related files could help indicacte attempts to exploit this vulnerability. Audit Sensitive Privilege Use - Windows 10 | Microsoft Learn Protect your Azure tenant by investigating administrators and users flagged for risky sign-ins and rotating their credentials. Investigate risk Microsoft Entra ID Protection - Microsoft Entra ID Protection | Microsoft Learn Enabling Multi-Factor Authentication can also help alleviate concerns about compromised accounts or exposure. Enforce multifactor... -
CVE Modified by [email protected]
Aug. 08, 2024
Action Type Old Value New Value Changed Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn.. Microsoft is developing a security update to mitigate this vulnerability, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Details: A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, Windows Server 2022 , and a subset of Azure Virtual Machines (VM) SKUs with a Windows based guestOS supporting VBS. For more information on Windows versions and VM SKUs supporting VBS, reference: Virtualization-based Security (VBS) | Microsoft Learn. The vulnerability enables an attacker with administrator privileges on the target system to replace current Windows system files with outdated versions. Successful exploitation provides an attacker with the ability to reintroduce previously mitigated vulnerabilities, circumvent VBS security features, and exfiltrate data protected by VBS. Microsoft is developing a security update that will revoke outdated, unpatched VBS system files to mitigate this vulnerability, but it is not yet available. Due to the complexity of blocking such a large quantity of files, rigorous testing is required to avoid integration failures or regressions. This CVE will be updated with new information and links to the security updates once available. We highly encourage customers subscribe to Security Update Guide notifications to be alerted of updates. See Microsoft Technical Security Notifications and Security Update Guide Notification System News: Create your profile now – Microsoft Security Response Center. Microsoft is not aware of any attempts to exploit this vulnerability. However, a public presentation regarding this vulnerability was hosted at BlackHat on August 07th, 2024. The presentation was appropriately coordinated with Microsoft but may change the threat landscape. Customers concerned with these risks should reference the guidance provided in the Recommended Actions section of this CVE to protect their systems. Recommended Actions: The following recommendations do not mitigate the vulnerability but can be used to reduce the risk of exploitation until the security update is available. Configure “Audit Object Access” settings to monitor attempts to access files, such as handle creation, read / write operations, or modifications to security descriptors. Audit File System - Windows 10 | Microsoft Learn Apply a basic audit policy on a file or folder - Windows 10 | Microsoft Learn Auditing sensitive privileges used to identify access, modification, or replacement of VBS related files could help indicacte attempts to exploit this vulnerability. Audit Sensitive Privilege Use - Windows 10 | Microsoft Learn Protect your Azure tenant by investigating administrators and users flagged for risky sign-ins and rotating their credentials. Investigate risk Microsoft Entra ID Protection - Microsoft Entra ID Protection | Microsoft Learn Enabling Multi-Factor Authentication can also help alleviate concerns about compromised accounts or exposure. Enforce multifactor... -
CVE Received by [email protected]
Aug. 08, 2024
Action Type Old Value New Value Added Description Summary: Microsoft was notified that an elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS; enabling an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. Microsoft is developing a security update to mitigate this threat, but it is not yet available. Guidance to help customers reduce the risks associated with this vulnerability and to protect their systems until the mitigation is available in a Windows security update is provided in the Recommended Actions section of this CVE. This CVE will be updated when the mitigation is available in a Windows security update. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert when this update occurs. Added Reference Microsoft Corporation https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302 [No types assigned] Added CWE Microsoft Corporation CWE-284 Added CVSS V3.1 Microsoft Corporation AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-21302 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-21302
weaknesses.