#VU66499 Out-of-bounds write in 3rd Generation Intel Xeon Scalable Processors - CVE-2021-33060

Vulnerability identifier: #VU66499

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33060

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
3rd Generation Intel Xeon Scalable Processors
Hardware solutions / Firmware

Vendor: Intel

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a boundary error in the BIOS firmware. A local user can trigger out-of-bounds write and execute arbitrary code on the target system with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

3rd Generation Intel Xeon Scalable Processors: All versions

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External links
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00686.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.