CVE-2023-31355

MediumCVSS 6.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.0/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Weakness enumeration

CWE-119CWE-787

Affected software

VendorProductVersions
AMD3rd Gen AMD EPYC™ Processors>= various, < MilanPI 1.0.0.D
AMD4th Gen AMD EPYC™ Processors>= various, < GenoaPI 1.0.0.C
AMDAMD EPYC™ Embedded 7003>= various, < EmbMilanPI-SP3 1.0.0.9
AMDAMD EPYC™ Embedded 9003>= various, < EmbGenoaPI-SP5 1.0.0.7

References

Timeline

Published
Aug 5, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

Related CVEs from 2023

CVE-2023-313564.4Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting inCVE-2023-313587.8A DLL hijacking vulnerability in the AMD Manageability API could allow an attacker to achieve privilege escalation, potentially resulting inCVE-2023-313597.8Incorrect default permissions in the AMD Manageability API could allow an attacker to achieve privilege escalation, potentially resulting inCVE-2023-31366.1The MailArchiver plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an email subject in versions up to, and including, 2.CVE-2023-313607.3Incorrect default permissions in the AMD Integrated Management Technology (AIM-T) Manageability Service installation directory could allow aCVE-2023-313617.3A DLL hijacking vulnerability in AMD Integrated Management Technology (AIM-T) Manageability Service could allow an attacker to achieve priviCVE-2023-313648.3Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to fCVE-2023-313653.9An integer overflow in the SMU could allow a privileged attacker to potentially write memory beyond the end of the reserved dRAM area resultCVE-2023-313665.5Improper input validation in AMD μProf could allow an attacker to perform a write to an invalid address, potentially resulting in denial of CVE-2023-31387.5A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values CVE-2023-31396.1The Protect WP Admin WordPress plugin before 4.0 discloses the URL of the admin panel via a redirection of a crafted URL, bypassing the protCVE-2023-31404.3Missing HTTP headers (X-Frame-Options, Content-Security-Policy) in KNIME Business Hub before 1.4.0 has left users vulnerable to click jack
CVE-2023-31355: Medium severity, CVSS 6.0 | Vulnix