CVE-2022-28734

Name	CVE-2022-28734
Description	Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.
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
grub2 (PTS)	bullseye (security), bullseye	2.06-3~deb11u6	fixed
	bookworm, bookworm (security)	2.06-13+deb12u1	fixed
	sid, trixie	2.12-5	fixed

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

Package	Type	Release	Fixed Version
grub2	source	buster	2.06-3~deb10u1
grub2	source	bullseye	2.06-3~deb11u1
grub2	source	(unstable)	2.06-3

Notes

[stretch] - grub2 <ignored> (No SecureBoot support in stretch)
[jessie] - grub2 <ignored> (No SecureBoot support in jessie)
https://www.openwall.com/lists/oss-security/2022/06/07/5