BIOS Reference Code Advisory

Summary:

Potential security vulnerabilities in the BIOS reference code for some Intel® Processors may allow escalation of privilege. Intel is releasing firmware updates to mitigate these potential vulnerabilities.****

Vulnerability Details:

CVEID: CVE-2021-0157

Description: Insufficient control flow management in the BIOS firmware for some Intel® Processors may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 8.2 High

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H****

CVEID: CVE-2021-0158

Description: Improper input validation in the BIOS firmware for some Intel® Processors may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 8.2 High

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Products:

• Intel® Xeon® Processor E Family
• Intel® Xeon® Processor E3 v6 Family
• Intel® Xeon® Processor W Family
• 11th Generation Intel® Core™ Processors
• 10th Generation Intel® Core™ Processors
• 8th Generation Intel® Core™ Processors
• 7th Generation Intel® Core™ Processors
• Intel Atom® Processor P5000 Family
• Intel® Core™ X-series Processors
• Intel® Celeron® Processor N Series
• Intel® Pentium® Silver Processor Series

Recommendations:

Intel recommends that users of affected Intel® Processors update to the latest version provided by the system manufacturer that addresses these issues.__

Acknowledgements:

Intel would like to thank Itai Liba and Assaf Carlsbad from SentinelOne for reporting these issues.

Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available.