Information disclosure in AMD CPU Firmware - CVE-2021-26318

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU57350

Information disclosure in AMD CPU Firmware - CVE-2021-26318

Published: October 14, 2021


Vulnerability identifier: #VU57350
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-26318
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: AMD
Affected software:
AMD CPU Firmware

Detailed vulnerability description

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to a timing and power-based side channel attack. A local attacker can leverage the x86 PREFETCH instructions and obtain kernel address space information.


How to mitigate CVE-2021-26318

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources