CVE-2020-7957

Name	CVE-2020-7957
Description	The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
dovecot (PTS)	bullseye	1:2.3.13+dfsg1-2+deb11u1	fixed
	bullseye (security)	1:2.3.13+dfsg1-2+deb11u2	fixed
	bookworm, bookworm (security)	1:2.3.19.1+dfsg1-2.1+deb12u1	fixed
	trixie	1:2.4.1+dfsg1-6	fixed
	trixie (security)	1:2.4.1+dfsg1-6+deb13u1	fixed
	forky, sid	1:2.4.1+dfsg1-9	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
dovecot	source	(unstable)	(not affected)

- dovecot <not-affected> (Only affects 2.3.9)
https://www.openwall.com/lists/oss-security/2020/02/12/2