#VU63177 Out-of-bounds write in Intel products - CVE-2021-33124

Vulnerability identifier: #VU63177

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2021-33124

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
2nd Generation Intel Xeon Scalable Processors
Intel Xeon D Processors
3rd Generation Intel Xeon Scalable Processors
10th Generation Intel Core Processors
8th Generation Intel Core Processors
7th Generation Intel Core Processors
Intel Core X-series Processors
Intel Xeon W Processors
Intel Xeon Processor E Family
Intel Xeon Processor E3 v6 Family
Intel Xeon Processor E3 v5 Family
Intel Xeon Processor E7 v4 Family
Intel Xeon Processor E5 v4 Family
Rocket Lake Xeon
9th Generation Intel Core Processors

Software vendor:
Intel

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the BIOS authenticated code module. A local user can run a specially crafted program to trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.

Install updates from vendor's website.

• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.html