CVE-2018-3968

Name	CVE-2018-3968
Description	An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
u-boot (PTS)	jessie	2014.10+dfsg1-5	fixed
	stretch	2016.11+dfsg1-4	fixed
	buster	2019.01+dfsg-7	fixed
	bullseye	2021.01+dfsg-5	fixed
	bookworm	2023.01+dfsg-2+deb12u1	fixed
	sid, trixie	2024.01+dfsg-5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
u-boot	source	wheezy	(unfixed)	end-of-life
u-boot	source	(unstable)	2014.07+dfsg1-1

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633