Vulnerability · Published Aug 5, 2024 · Assigned by AMD
CVE-2023-31355
Medium 6.0
In plain English
A medium-severity memory corruption in 3rd Gen AMD EPYC™ Processors from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)6.0Medium
Exploit odds (30 days)0.4%top 61.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | 3rd Gen AMD EPYC™ Processors | various – before MilanPI 1.0.0.D |
| AMD | 4th Gen AMD EPYC™ Processors | various – before GenoaPI 1.0.0.C |
| AMD | AMD EPYC™ Embedded 7003 | various – before EmbMilanPI-SP3 1.0.0.9 |
| AMD | AMD EPYC™ Embedded 9003 | various – before EmbGenoaPI-SP5 1.0.0.7 |
Weakness: CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N