CVE-2020-28020

Name	CVE-2020-28020
Description	Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2650-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
exim4 (PTS)	bullseye	4.94.2-7+deb11u3	fixed
	bullseye (security)	4.94.2-7+deb11u4	fixed
	bookworm, bookworm (security)	4.96-15+deb12u7	fixed
	trixie	4.98.2-1	fixed
	forky, sid	4.98.2-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
exim4	source	stretch	4.89-2+deb9u8		DLA-2650-1
exim4	source	(unstable)	4.92~RC5-1

Notes

Fixed by: https://git.exim.org/exim.git/commit/56ac062a3ff94fc4e1bbfc2293119c079a4e980b (exim-4.92-RC5)
https://www.openwall.com/lists/oss-security/2021/05/04/7