PT-2021-17190 · Asus · Asus Ux360Ca Bios

Satoshi Tanda · Published 2021-03-30 · Updated 2021-04-07 · CVE-2021-26943

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: ASUS UX360CA BIOS versions through 303

Description: The issue allows an attacker with ring 0 privilege to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM.

Recommendations: For ASUS UX360CA BIOS versions through 303, update to a version later than 303 to resolve the issue. As a temporary workaround, consider restricting access to ring 0 privilege to minimize the risk of exploitation.

Exploit

Fix

Related Identifiers

CVE-2021-26943

Affected Products

Asus Ux360Ca Bios

References · 7

• 🔥 https://github.com/tandasat/SmmExploit · Exploit
• 🔥 https://youtube.com/watch?v=1H3AfaVyeuk · Exploit
• 🔥 https://asus.com/support/FAQ/1045541 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-26943 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26943 · Vendor Advisory
• https://t.me/cvenotify/12827 · Telegram Post
• https://t.me/cybersecuritytechnologies/3017 · Telegram Post