CVE-2023-31355

MEDIUM

SNP firmware - Info Disclosure

Title source: llm

Description

Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest.

Exploits (1)

nomisec WORKING POC 8 stars
by Freax13 · poc
https://github.com/Freax13/cve-2023-31355-poc

References (1)

Scores

CVSS v3 6.0
EPSS 0.0080
EPSS Percentile 73.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Classification

CWE
CWE-119 CWE-787
Status published

Affected Products (50)

amd/epyc_7203_firmware < milanpi_1.0.0.d
amd/epyc_7203p_firmware < milanpi_1.0.0.d
amd/epyc_72f3_firmware < milanpi_1.0.0.d
amd/epyc_7303_firmware < milanpi_1.0.0.d
amd/epyc_7303p_firmware < milanpi_1.0.0.d
amd/epyc_7313_firmware < milanpi_1.0.0.d
amd/epyc_7313p_firmware < milanpi_1.0.0.d
amd/epyc_7343_firmware < milanpi_1.0.0.d
amd/epyc_73f3_firmware < milanpi_1.0.0.d
amd/epyc_7373x_firmware < milanpi_1.0.0.d
amd/epyc_7413_firmware < milanpi_1.0.0.d
amd/epyc_7443_firmware < milanpi_1.0.0.d
amd/epyc_7443p_firmware < milanpi_1.0.0.d
amd/epyc_74f3_firmware < milanpi_1.0.0.d
amd/epyc_7453_firmware < milanpi_1.0.0.d
... and 35 more

Timeline

Published Aug 05, 2024
Tracked Since Feb 18, 2026