CVE-2023-20519

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 14 Nov 2023, 18:53
Last modified:30 Aug 2024, 18:03

Vulnerability Summary

Overall Risk (default)
low
13/100
CVSS Score
3.3 LOW
v3.1 (nvd)
EPSS Score
0.06% LOW
0% probability -0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Nov 2023, 18:53
Published
Vulnerability first disclosed
30 Aug 2024, 18:03
Last Modified
Vulnerability information updated

Description

A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to masquerade as the guest's migration agent resulting in a potential loss of guest integrity.

CVSS Metrics

  • v3.1•LOW•Score: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Trends

Current EPSS score: 0.06%• Percentile: 19%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • amd•3rd gen amd epyc™ processors

    various

  • amd•4th gen amd epyc™ processors

    various

  • amd•genoapi_firmware

    < 1.0.0.3

  • amd•milanpi_firmware

    < 1.0.0.a

References (1)