PT-2023-1485 · Amd · Amd Secure Encrypted Virtualization (Sev) Firmware

CVE-2021-26404 · Publicado 2023-01-10 · Atualizado 2025-04-08

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Média

Vetor base

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

Name of the Vulnerable Software and Affected Versions AMD Secure Encrypted Virtualization (SEV) firmware (affected versions not specified)

Description The issue is related to improper input validation and bounds checking in the SEV firmware, which may cause a buffer overflow in memory. This could potentially lead to information disclosure. The vulnerability is associated with the implementation of AMD Secure Encrypted Virtualization technology in AMD processor microcode.

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

RCE

Buffer Overflow

Enumeração de Fraquezas

CWE-20

CWE-119

Identificadores relacionados

BDU:2023-00895

CVE-2021-26404

Produtos afetados

Amd Secure Encrypted Virtualization (Sev) Firmware

Referências · 7

• https://osv.dev/vulnerability/CVE-2021-26404 · Aviso do Fabricante
• https://amd.com/en/corporate/product-security/bulletin/AMD-SB-1032 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2021-26404 · Nota de Segurança
• https://support.lenovo.com/us/en/product_security/LEN-87730 · Nota
• https://bdu.fstec.ru/vul/2023-00895 · Nota de Segurança
• https://amd.com/en/corporate/product-security/bulletin/amd-sb-1032 · Nota
• https://t.me/cvenotify/118378 · Publicação no Telegram