PT-2023-12586 · Unknown · Asp Bootloader

Published 2023-05-09 · Updated 2023-05-22 · CVE-2021-46792

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions ASP bootloader (affected versions not specified)

Description The issue is related to a Time-of-check Time-of-use (TOCTOU) condition in the BIOS2PSP command. This may allow an attacker with a malicious BIOS to create a race condition, causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event, potentially leading to a denial of service.

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

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2021-46792

Affected Products

Asp Bootloader

References · 5

• https://amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-46792 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46792 · Security Note
• https://t.me/cvenotify/50073 · Telegram Post
• https://t.me/cibsecurity/63698 · Telegram Post