CVE-2023-31355: amd 3rd gen amd epyc™ processors
CVSS: 6.0v3.1MediumAnalyzed
Published 05-08-2024Last modified 06-08-2024
Vulnerability summary
CVE-2023-31355 is a medium (CVSS 6.0) vulnerability in amd 3rd gen amd epyc™ processors. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 37.1% of scored vulnerabilities.
CVSS score
6.0/10
010
Medium · v3.1 (CVE.org)EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 05-08-2024PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:NSourcesAll 2 agree
- NVDNIST6.0MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
EPSS trend
Probability
0.44%
Chance of exploitation in the next 30 days
Percentile
37%
Versus all other CVEs
30-day change
0.00 pp
From 0.44% on 19-09-2026
19-09-202619-10-2026
EPSS score0.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Amd90 products
- 3rd gen amd epyc™ processors≥ various, < MilanPI 1.0.0.D
- 4th gen amd epyc™ processors≥ various, < GenoaPI 1.0.0.C
- amd epyc™ embedded 7003≥ various, < EmbMilanPI-SP3 1.0.0.9
- amd epyc™ embedded 9003≥ various, < EmbGenoaPI-SP5 1.0.0.7
- epyc_7203_firmware< milanpi_1.0.0.d
1 vendor · 90 products
References
1 links- https//www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.htmlVendor AdvisoryBroken Link