CVE-2024-56161
AMD SEV-SNP Signature Verification Bypass Vulnerability
Description
Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and integrity of a confidential guest running under AMD SEV-SNP.
INFO
Published Date :
Feb. 3, 2025, 6:15 p.m.
Last Modified :
Feb. 4, 2025, 12:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.8
Exploitability Score :
0.8
Affected Products
The following products are affected by CVE-2024-56161
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.
No affected product recoded yet
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-2024-56161.
| URL | Resource |
|---|---|
| https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3019.html | |
| http://www.openwall.com/lists/oss-security/2025/02/04/1 |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-56161 vulnerability anywhere in the article.
-
The Hacker News
⚡ THN Weekly Recap: Top Cybersecurity Threats, Tools and Tips [10 February]
Cybersecurity / Weekly Recap In cybersecurity, the smallest crack can lead to the biggest breaches. A leaked encryption key, an unpatched software bug, or an abandoned cloud storage bucket—each one se ... Read more
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TheCyberThrone
Cisco fixes Twin ISE Vulnerabilities
Cisco has recently addressed two critical vulnerabilities in its Identity Services Engine (ISE), identified as CVE-2025-20124 and CVE-2025-20125. These vulnerabilities pose significant security risks, ... Read more
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TheCyberThrone
CVE-2024-56161 impacts AMD SEV-SNP Microcode
BackgroundCVE-2024-56161 is an improper signature verification vulnerability found in the AMD CPU ROM microcode patch loader. This vulnerability enables an attacker with local administrator privileges ... Read more
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BleepingComputer
AMD fixes bug that lets hackers load malicious microcode patches
AMD has released mitigation and firmware updates to address a high-severity vulnerability that can be exploited to load malicious CPU microcode on unpatched devices. The security flaw (CVE-2024-56161 ... Read more
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The Register
Google: How to make any AMD Zen CPU always generate 4 as a random number
Googlers have not only figured out how to break AMD's security – allowing them to load unofficial microcode into its processors to modify the silicon's behavior as they wish – but also demonstrated th ... Read more
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The Hacker News
AMD SEV-SNP Vulnerability Allows Malicious Microcode Injection with Admin Access
Vulnerability / Hardware Security A security vulnerability has been disclosed in AMD's Secure Encrypted Virtualization (SEV) that could permit an attacker to load a malicious CPU microcode under speci ... Read more
The following table lists the changes that have been made to the
CVE-2024-56161 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.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Feb. 04, 2025
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2025/02/04/1 -
New CVE Received by [email protected]
Feb. 03, 2025
Action Type Old Value New Value Added Description Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and integrity of a confidential guest running under AMD SEV-SNP. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N Added CWE CWE-347 Added Reference https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3019.html
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-56161 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-2024-56161
weaknesses.