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Article Number: 000134602

DSA-2019-174: Dell Client XPS 13 2-in-1 (7390) Configuration Vulnerability

Summary: Dell Client XPS 13 2-in-1 (7390) BIOS requires an update to address a configuration vulnerability.

Article Content

Impact

High

Details

Settings for the Dell XPS 13 2-in-1 (7390) BIOS versions prior to 1.1.3 contain a configuration vulnerability. The BIOS configuration for the "Enable Thunderbolt (and PCIe behind TBT) pre-boot modules" setting is enabled by default. A local unauthenticated attacker with physical access to a user’s system can obtain read or write access to main memory via a DMA attack during platform boot.

Settings for the Dell XPS 13 2-in-1 (7390) BIOS versions prior to 1.1.3 contain a configuration vulnerability. The BIOS configuration for the "Enable Thunderbolt (and PCIe behind TBT) pre-boot modules" setting is enabled by default. A local unauthenticated attacker with physical access to a user’s system can obtain read or write access to main memory via a DMA attack during platform boot.

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

Affected products:

Dell XPS 13 2-in-1 (7390) BIOS versions prior to 1.1.3

Resolution:

Refer to the table below for the Dell Client BIOS release containing a resolution to this vulnerability.

After applying the update, the default BIOS settings need to be applied for the change to take effect. To learn more, visit the Dell Knowledge Base article How to restore the BIOS (System Setup) defaults on a Dell Product.

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.

Customers may use one of the Dell notification solutions to be notified and download driver, BIOS and firmware updates automatically once available.

Product

Update BIOS Version
(or greater)

Release Date (MM/DD/YYYY)
Expected Release ( Month /YYYY)

XPS 13 2-in-1 (7390)

1.1.3

12/05/2019

Affected products:

Dell XPS 13 2-in-1 (7390) BIOS versions prior to 1.1.3

Resolution:

Refer to the table below for the Dell Client BIOS release containing a resolution to this vulnerability.

After applying the update, the default BIOS settings need to be applied for the change to take effect. To learn more, visit the Dell Knowledge Base article How to restore the BIOS (System Setup) defaults on a Dell Product.

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.

Customers may use one of the Dell notification solutions to be notified and download driver, BIOS and firmware updates automatically once available.

Product

Update BIOS Version
(or greater)

Release Date (MM/DD/YYYY)
Expected Release ( Month /YYYY)

XPS 13 2-in-1 (7390)

1.1.3

12/05/2019

Acknowledgements

Dell would like to thank Mickey Shkatov from Eclypsium for reporting this vulnerability.

Related Information

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

Legal Information

Article Properties

Affected Product

XPS 13 7390 2-in-1

Last Published Date

22 May 2021

Article Type

Dell Security Advisory

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