CVE-2021-31196
Microsoft Exchange Server Information Disclosure V - [Actively Exploited]
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
INFO
Published Date :
July 14, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 6:05 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
1.2
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Microsoft Exchange Server contains an information disclosure vulnerability that allows for remote code execution.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-31196; https://nvd.nist.gov/vuln/detail/CVE-2021-31196
Public PoC/Exploit Available at Github
CVE-2021-31196 has a 15 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-31196.
| URL | Resource |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196 | Patch Vendor Advisory |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196 | 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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
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A curated list of my GitHub Stars
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TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
bugbounty cve exp exploit payload poc rce vulnerability
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Python Go C
Proxylogon & Proxyshell & Proxyoracle & Proxytoken & All exchange server history vulns summarization :)
attackchains exploit vulnerability exchange-server golang python-script proxylogon proxyshell proxyoracle proxytoken proxyrelay cve-2021-42321 proxymaybeshell proxynotshell
Go Python C C# Batchfile Ruby ASP.NET HTML PowerShell JavaScript
[ProxyLogon] CVE-2021-26855 & CVE-2021-27065 Fixed RawIdentity Bug Exploit. [ProxyOracle] CVE-2021-31195 & CVE-2021-31196 Exploit Chains. [ProxyShell] CVE-2021-34473 & CVE-2021-34523 & CVE-2021-31207 Exploit Chains.
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-31196 vulnerability anywhere in the article.
-
The Hacker News
CISA Urges Federal Agencies to Patch Versa Director Vulnerability by September
Vulnerability / Government Security The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has placed a security flaw impacting Versa Director to its Known Exploited Vulnerabilities (KEV) ca ... Read more
-
TheCyberThrone
CISA adds multiple vulnerabilities to its KEV catalog
The U.S. CISA has added 4 vulnerabilities to it’d Known Exploited Vulnerabilities Catalog (KEV) belongs to Dahua, Microsoft, and Linux products based on the mass exploitationCVE-2022-0185Linux Kernel ... Read more
-
The Register
Microsoft's Patch Tuesday borks dual-boot Linux-Windows PCs
Microsoft says it's investigating issues with a patch intended to plug a two-year-old flaw in the GRUB open source boot loader that is crashing some dual-boot computers running both Windows and Linux. ... Read more
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Cybersecurity News
Microsoft, Linux, Dahua Flaws Exploited: CISA Warns
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent alert, adding four critical security vulnerabilities impacting Microsoft Exchange Server, the Linux kernel, and Da ... Read more
The following table lists the changes that have been made to the
CVE-2021-31196 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196 -
Modified Analysis by [email protected]
Aug. 22, 2024
Action Type Old Value New Value -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Aug. 22, 2024
Action Type Old Value New Value Added Vulnerability Name Microsoft Exchange Server Information Disclosure Vulnerability Added Required Action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Added Due Date 2024-09-11 Added Date Added 2024-08-21 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Dec. 28, 2023
Action Type Old Value New Value Changed Description Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31206, CVE-2021-34473. Microsoft Exchange Server Remote Code Execution Vulnerability Added CVSS V3.1 Microsoft Corporation AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H -
Initial Analysis by [email protected]
Jul. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196 Patch, Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-31196 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-2021-31196
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
5.99 }} 0.62%
score
0.93399
percentile