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Vulnerability DatabaseCVE-2023-20566

CVE-2023-20566: 
Linux openSUSE vulnerability analysis and mitigation

Overview

CVE-2023-20566 is a security vulnerability related to improper address validation in ASP (AMD Secure Processor) when SNP (Secure Nested Paging) is enabled. The vulnerability was disclosed on November 14, 2023, affecting various AMD EPYC processors and their firmware versions (AMD Advisory).

Technical details

The vulnerability has received varying severity ratings, with NIST assigning a CVSS v3.1 Base Score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N, while AMD assigned a CVSS score of 5.3 (MEDIUM) with vector string CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N (NVD).

Impact

The vulnerability could potentially allow an attacker to compromise guest memory integrity in systems where SNP is enabled (AMD Advisory).

Mitigation and workarounds

AMD has released firmware updates to address this vulnerability. The fixes are included in firmware versions milanpi1.0.0.b for Milan processors and genoapi1.0.0.7 for Genoa processors (AMD Advisory).

Additional resources

Source: This report was generated using AI

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