CVE-2017-5193

Name	CVE-2017-5193
Description	The nickcmp function in Irssi before 0.8.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a message without a nick.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-1217-1
Debian Bugs	850403

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
irssi (PTS)	buster	1.2.0-2+deb10u1	fixed
	bullseye	1.2.3-1	fixed
	bookworm, sid	1.4.3-2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
irssi	source	wheezy	0.8.15-5+deb7u4	DLA-1217-1
irssi	source	jessie	0.8.17-1+deb8u3
irssi	source	(unstable)	0.8.21-1		850403

Notes

https://www.openwall.com/lists/oss-security/2017/01/05/2
https://github.com/irssi/irssi/commit/6c6c42e3d1b49d90aacc0b67f8540471cae02a1d
https://irssi.org/security/irssi_sa_2017_01.txt