CVE-2021-26311: amd epyc_7232p_firmware Command Injection

Vulnerability summary

CVE-2021-26311 is a high (CVSS 9.0) Command Injection vulnerability in amd epyc_7232p_firmware. EPSS estimates a 1.68% chance of exploitation in the next 30 days, higher than 76.6% of scored vulnerabilities.

Timeline

1. 13-05-2021
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor.

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.