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Article Number: 000180645


DSA-2020-247: Dell Client Platform Security Update for UEFI BIOS RuntimeServices Overwrite Vulnerability

Summary: Dell Inspiron 5675 contains remediation for a UEFI BIOS RuntimeServices Overwrite vulnerability that could be exploited by malicious users to compromise the affected system.

Article Content


Impact

Medium

Details

Proprietary Code CVE(s) Description CVSS Base Score CVSS Vector String
CVE-2020-26186 Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices structure to execute arbitrary code in System Management Mode (SMM).
 
6.8 CVSS:3.1:AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Proprietary Code CVE(s) Description CVSS Base Score CVSS Vector String
CVE-2020-26186 Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices structure to execute arbitrary code in System Management Mode (SMM).
 
6.8 CVSS:3.1:AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Affected Products and Remediation

Customers should use the latest releases available from Dell support when updating their systems.

Please visit the Drivers and Downloads site for updates on the applicable products. To learn more, visit the Dell Knowledge Base article Dell BIOS Updates, and download the update for your Dell computer.

Notes:
  • Prior to installing the update, please ensure Windows Updates are up to date.
  • The dates listed are estimated availability dates and are subject to change without notice.
  • Update versions in the table below are the first releases with the updates to address the security vulnerability. Releases at and above these versions will include the security updates.
  • Release dates below are in US format of MM/DD/YYYY.
  • Expected release dates are in the Month YYYY format.

Dell Client Consumer Products Affected

The following is a list of impacted products and expected release dates:
Product Update BIOS Version
(or greater)
Release Date (MM/DD/YYYY)
Expected Release (Month/YYYY)
Dell Inspiron 5675 1.4.1 11/18/2020
Customers should use the latest releases available from Dell support when updating their systems.

Please visit the Drivers and Downloads site for updates on the applicable products. To learn more, visit the Dell Knowledge Base article Dell BIOS Updates, and download the update for your Dell computer.

Notes:
  • Prior to installing the update, please ensure Windows Updates are up to date.
  • The dates listed are estimated availability dates and are subject to change without notice.
  • Update versions in the table below are the first releases with the updates to address the security vulnerability. Releases at and above these versions will include the security updates.
  • Release dates below are in US format of MM/DD/YYYY.
  • Expected release dates are in the Month YYYY format.

Dell Client Consumer Products Affected

The following is a list of impacted products and expected release dates:
Product Update BIOS Version
(or greater)
Release Date (MM/DD/YYYY)
Expected Release (Month/YYYY)
Dell Inspiron 5675 1.4.1 11/18/2020

Workarounds and Mitigations

None

Acknowledgements

Dell would like to thank yngweijw for reporting this vulnerability.
 

Revision History

RevisionDateDescription
1.012/15/2020Initial Release

Related Information

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


Article Properties


Affected Product

Inspiron 5675

Last Published Date

15 Dec 2020

Version

1

Article Type

Dell Security Advisory