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

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.

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.