CVE-2024-56161: Signature Bypass (CVSS 7.2)

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.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

Weakness Type (CWE)

CWE-347 CWE-347

References

Other References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3019.html http://www.openwall.com/lists/oss-security/2025/02/04/1 http://www.openwall.com/lists/oss-security/2025/03/06/2 https://lists.debian.org/debian-lts-announce/2025/03/msg00024.html https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7033.html

Frequently Asked Questions

What is CVE-2024-56161? +

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. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2024-56161? +

CVE-2024-56161 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2024-56161? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-56161