3.3
CWE
416
Advisory Published
Updated

CVE-2023-20519: Use After Free

First published: Tue Nov 14 2023(Updated: )

A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to masquerade as the guest's migration agent resulting in a potential loss of guest integrity.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Milanpi Firmware<1.0.0.a
Amd Milanpi
Amd Genoapi Firmware<1.0.0.3
Amd Genoapi

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Frequently Asked Questions

  • What is CVE-2023-20519?

    CVE-2023-20519 is a Use-After-Free vulnerability in the management of an SNP guest context page, which may allow a malicious hypervisor to masquerade as the guest's migration agent resulting in a potential loss of guest integrity.

  • What software is affected by CVE-2023-20519?

    The affected software includes Amd Milanpi Firmware versions up to and excluding 1.0.0.a, and Amd Genoapi Firmware versions up to and excluding 1.0.0.3.

  • What is the severity of CVE-2023-20519?

    CVE-2023-20519 has a severity rating of low, with a CVSS score of 3.3.

  • How can a malicious hypervisor exploit CVE-2023-20519?

    A malicious hypervisor can exploit CVE-2023-20519 by masquerading as the guest's migration agent and potentially compromising the integrity of the guest.

  • Is Amd Milanpi and Amd Genoapi vulnerable to CVE-2023-20519?

    Amd Milanpi and Amd Genoapi are not vulnerable to CVE-2023-20519.

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