CVE-2021-26402

CWE-787 — Out-of-bounds Write3 documents3 sources
Severity
7.1HIGH
EPSS
0.1%
top 83.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
52
AMD Epyc 7002 FirmwareAMD Epyc 7003 FirmwareAMD Epyc 7232p Firmware+49 more
Timeline
PublishedJan 11

Description

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HExploitability: 1.8 | Impact: 5.2

Affected Packages52 packages

▶NVDamd/epyc_7002_firmware< romepi_1.0.0.c
▶NVDamd/epyc_7003_firmware< milanpi_1.0.0.4
▶NVDamd/epyc_7252_firmware< romepi_1.0.0.c
▶NVDamd/epyc_7262_firmware< romepi_1.0.0.c
▶NVDamd/epyc_7272_firmware< romepi_1.0.0.c

🔴Vulnerability Details

2
GHSA
GHSA-f358-f8cc-67vr: Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-con↗2023-01-11
▶
CVEList
CVE-2021-26402: Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-con↗2023-01-10
▶
CVE-2021-26402 (HIGH CVSS 7.1) | Insufficient bounds checking in ASP | cvebase.io