PT-2023-1486 · Amd · Amd Bios

Hugo Magalhaes · Publicado 2023-01-10 · Atualizado 2025-04-08 · CVE-2021-26402

Positive Technologies (AI Summary)

CVSS v3.1

7.1

Alta

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions AMD BIOS software (affected versions not specified)

Description The issue is related to insufficient bounds checking in the AMD Secure Processor firmware when handling BIOS mailbox commands. This can allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions, potentially leading to a loss of integrity and availability of protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Buffer Overflow

Enumeração de Fraquezas

CWE-787

CWE-119

Identificadores relacionados

BDU:2023-00896

CVE-2021-26402

Produtos afetados

Amd Bios

Referências · 7

• https://amd.com/en/corporate/product-security/bulletin/amd-sb-1032 · Nota
• https://amd.com/en/corporate/product-security/bulletin/AMD-SB-1032 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2021-26402 · Nota de Segurança
• https://t.me/cvenotify/118376 · Publicação no Telegram
• https://support.lenovo.com/us/en/product_security/LEN-87730 · Nota
• https://bdu.fstec.ru/vul/2023-00896 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2021-26402 · Aviso do Fabricante