CVE-2023-31355

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 v3.1

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

CVSS v3.1

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

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2024-08-05

Updated

2024-08-06

Proof-of-concept exploits (2)

• Freax13/cve-2023-31355-poc8★ · 2023-12-09
• Freax13/cve-2024-21980-poc8★ · 2024-01-10

References

• CVE Record
• NVD entry

Related

• CVE-2023-20573
• CVE-2023-31346
• CVE-2023-46813
• CVE-2024-21978
• CVE-2024-21980
• CVE-2023-3139