PT-2020-11238 · Amd · Amd Ati Diagnostics Hardware Abstraction Sys/Overclocking Utility

Ryan Warns · Published 2020-05-18 · Updated 2021-07-21 · CVE-2019-7246

Positive Technologies (AI Summary)

CVSS v3.1

6.7

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility version 5.11.9.0

Description An issue was discovered in the atillk64.sys driver, which exposes a wrmsr instruction and does not properly filter the Model Specific Register (MSR). This allows arbitrary MSR writes, leading to Ring-0 code execution and escalation of privileges.

Recommendations For version 5.11.9.0, consider disabling the atillk64.sys driver until a patch is available to prevent arbitrary MSR writes and potential Ring-0 code execution. Restrict access to the vulnerable driver to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2019-7246

Affected Products

Amd Ati Diagnostics Hardware Abstraction Sys/Overclocking Utility

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2019-7246 · Security Note
• https://osv.dev/vulnerability/CVE-2019-7246 · Vendor Advisory
• https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2019-0015/FEYE-2019-0015.md · Note
• https://t.me/cibsecurity/12141 · Telegram Post
• https://t.me/cvenotify/3889 · Telegram Post