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Article Number: 000193321

DSA-2021-240: Dell Client Platform Update for Multiple Vulnerabilities

Summary: Dell Client Consumer and Commercial platform remediation is available for these vulnerabilities that may exploited by malicious users to compromise the affected systems.

Article Content

Impact

High

Details

Proprietary Code CVEs Description CVSS Base Score CVSS Vector String
CVE-2021-36342 Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
7.5		 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVE-2021-36343 Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
7.5		 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

See the table below for Dell Client BIOS releases containing a resolution to this vulnerability. Dell recommends all customers update at the earliest opportunity.

Go to the Drivers and Downloads site for updates on the applicable products. To learn more, see Dell KB article Dell BIOS Updates, and download the update for your Dell computer.

Customers may use one of the Dell notification solutions to be notified and download driver, BIOS, and firmware updates automatically once available.
Proprietary Code CVEs Description CVSS Base Score CVSS Vector String
CVE-2021-36342 Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
7.5		 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVE-2021-36343 Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
7.5		 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

See the table below for Dell Client BIOS releases containing a resolution to this vulnerability. Dell recommends all customers update at the earliest opportunity.

Go to the Drivers and Downloads site for updates on the applicable products. To learn more, see Dell KB article Dell BIOS Updates, and download the update for your Dell computer.

Customers may use one of the Dell notification solutions to be notified and download driver, BIOS, and firmware updates automatically once available.
Dell Technologies recommends all customers consider both the CVSS base score and any relevant temporal and environmental scores that may impact the potential severity associated with a particular security vulnerability.

Acknowledgements

Dell would like to thank Assaf Carlsbad and Itai Liba from SentinelOne for reporting CVE-2021-36342 and JiaWei Yin (yngweijw) for reporting CVE-2021-36343

Related Information

Dell Security Advisories and Notices
Dell Vulnerability Response Policy
CVSS Scoring Guide

Legal Information

Article Properties

Affected Product

Product Security Information

Last Published Date

12 Jan 2022

Article Type

Dell Security Advisory

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