Discover and read the best of Twitter Threads about #BYOVD
Most recents (1)
#ESETResearch analyze first in-the-wild UEFI bootkit bypassing UEFI Secure Boot even on fully updated Windows 11 systems. Its functionality indicates it is the #BlackLotus UEFI bootkit, for sale on hacking forums since at least Oct 6, 2022. @smolar_m welivesecurity.com/2023/03/01/bla… 1/11
BlackLotus brings legit but vulnerable binaries to the victim’s system (#BYOVD) to exploit #CVE-2022-21894 and bypass UEFI Secure Boot on up-to-date Windows systems. In some samples, these binaries are downloaded directly from the MS Symbol Store. cve.mitre.org/cgi-bin/cvenam… 2/11 
Although the vulnerability was fixed in Microsoft’s January 2022 update, its exploitation is still possible by bringing vulnerable drivers to the system, as the affected binaries have still not been added to the UEFI revocation list. msrc.microsoft.com/update-guide/e… 3/11
