Out-of-bounds write in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-46772
Published: October 2, 2024
Vulnerability identifier: #VU97953
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-46772
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: AMD
Affected software:
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation in the ABL. A local privileged user with access to the BIOS menu or UEFI shell can tamper with the structure headers in SPI ROM and perform a denial of service (DoS) attack.
How to mitigate CVE-2021-46772
Install updates from vendor's website.