CVE-2021-26320 — Improper Certificate Validation in AMD Epyc 7232p Firmware

CWE-295 — Improper Certificate Validation3 documents3 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 71.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
60
AMD 1ST GEN AMD EpycAMD 2ND GEN AMD EpycAMD 3RD GEN AMD Epyc+57 more
Timeline
PublishedNov 16
Latest updateMay 24

Description

Insufficient validation of the AMD SEV Signing Key (ASK) in the SEND_START command in the SEV Firmware may allow a local authenticated attacker to perform a denial of service of the PSP

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages60 packages

▶NVDamd/epyc_7251_firmware< naplespi-sp3_1.0.0.g
▶NVDamd/epyc_7252_firmware< romepi-sp3_1.0.0.c
▶NVDamd/epyc_7261_firmware< naplespi-sp3_1.0.0.g
▶NVDamd/epyc_7262_firmware< romepi-sp3_1.0.0.c
▶NVDamd/epyc_7272_firmware< romepi-sp3_1.0.0.c

🔴Vulnerability Details

2
GHSA
GHSA-v3rf-32hp-hfhf: Insufficient validation of the AMD SEV Signing Key (ASK) in the SEND_START command in the SEV Firmware may allow a local authenticated attacker to per↗2022-05-24
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CVEList
CVE-2021-26320: Insufficient validation of the AMD SEV Signing Key (ASK) in the SEND_START command in the SEV Firmware may allow a local authenticated attacker to per↗2021-11-16
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CVE-2021-26320 — Improper Certificate Validation in AMD | cvebase