CVE-2021-0091: INTEL-SA-00527

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2021.2 IPU - BIOS Advisory

Intel ID:

INTEL-SA-00527

Advisory Category:

Firmware

Impact of vulnerability:

Escalation of Privilege, Denial of Service, Information Disclosure

Severity rating:

HIGH

Original release:

02/08/2022

Last revised:

02/08/2022

**Summary: **

Potential security vulnerabilities in the BIOS firmware for some Intel® Processors may allow escalation of privilege, denial of service or information disclosure. Intel is releasing firmware updates to mitigate these potential vulnerabilities.

Vulnerability Details:

CVEID: CVE-2021-0103

Description: Insufficient control flow management in the firmware for some Intel® Processors may allow a privileged user to potentially enable an 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-2021-0114

Description: Unchecked return value in the firmware for some Intel® Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 7.9 High

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

CVEID: CVE-2021-0115

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

CVSS Base Score: 7.9 High

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

CVEID: CVE-2021-0116

Description: Out-of-bounds write in the firmware for some Intel® Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 7.9 High

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

CVEID: CVE-2021-0117

Description: Pointer issues in the firmware for some Intel® Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 7.9 High

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

CVEID: CVE-2021-0118

Description: Out-of-bounds read in the firmware for some Intel® Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 7.9 High

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

CVEID: CVE-2021-0099

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

CVSS Base Score: 7.8 High

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

CVEID: CVE-2021-0156

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

CVSS Base Score: 7.5 High

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

CVEID: CVE-2021-0111

Description: NULL pointer dereference in the firmware for some Intel® Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 7.2 High

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

CVEID: CVE-2021-0107

Description: Unchecked return value in the firmware for some Intel® Processors may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 7.2 High

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

CVEID: CVE-2021-0125

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

CVSS Base Score: 6.7 Medium

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

CVEID: CVE-2021-0124

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

CVSS Base Score: 6.3 Medium

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

CVEID: CVE-2021-0119

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

CVSS Base Score: 5.8 Medium

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

CVEID: CVE-2021-0092

Description: Improper access control in the firmware for some Intel® Processors may allow a privileged user to potentially enable a denial of service via local access.

CVSS Base Score: 4.7 Medium

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

CVEID: CVE-2021-0091

Description: Improper access control in the firmware for some Intel® Processors may allow an unauthenticated user to potentially enable an escalation of privilege via local access.

CVSS Base Score: 3.2 Low

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

CVEID: CVE-2021-0093

Description: Incorrect default permissions in the firmware for some Intel® Processors may allow a privileged user to potentially enable a denial of service via local access.

CVSS Base Score: 2.4 Low

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

Affected Products:

• 2nd Generation Intel® Xeon® Scalable Processor Family
• Intel® Xeon® Scalable Processor Family
• Intel® Xeon® Processor W Family
• Intel® Xeon® Processor E Family
• Intel® Xeon® Processor D Family
• 11th Generation Intel® Core™ Processor Family
• 10th Generation Intel® Core™ Processor Family
• 9th Generation Intel® Core™ Processor Family
• 8th Generation Intel® Core™ Processor Family
• 7th Generation Intel® Core™ Processor Family
• 6th Generation Intel® Core™ processor Family
• Intel® Core™ X-series Processor Family
• Intel® Atom® Processor C3XXX Family.

Recommendations:

Intel recommends that users of listed Intel® Processors update to the latest versions provided by the system manufacturer that addresses these issues.

Acknowledgements:

Intel would like to thank Hugo Magalhaes from Oracle for reporting CVE-2021-0107, CVE-2021-0111, CVE-2021-0114, CVE-2021-0115, CVE-2021-0116, CVE-2021-0117, CVE-2021-0118, and CVE-2021-0144.

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.

Revision History

Revision

Date

Description

1.0

02/08/2022

Initial Release

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