HP fixes bug letting attackers overwrite firmware in over 200 models

By Bill Toulas, Bleeping Computer

HP has released BIOS updates today to fix two high-severity vulnerabilities affecting a wide range of PC and notebook products, which allow code to run with Kernel privileges.

Kernel-level privileges are the highest rights in Windows, allowing threat actors to execute any command at the Kernel level, including manipulating drivers and accessing the BIOS.

The flaws are tracked as CVE-2021-3808 and CVE-2021-3809, and both have a CVSS 3.1 base score of 8.8, giving them a high severity rating. At this time, HP has provided no technical details about these flaws.

The list of affected products includes business notebooks like Zbook Studio, ZHAN Pro, EliteBook, ProBook, and Elite Dragonfly, business desktop PCs like the EliteDesk and ProDesk, retail PoS computers like the Engage, workstations like the Z1 and Z2, and thin client PCs.

For a complete list of all the affected models and the corresponding SoftPaqs to use in each case, check the security advisory page and look for your device. Note that not all of the listed products have received a fixing patch yet.



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