CVE-2011-1091

Name	CVE-2011-1091
Description	libymsg.c in the Yahoo! protocol plugin in libpurple in Pidgin 2.6.0 through 2.7.10 allows (1) remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG notification packet, and allows (2) remote Yahoo! servers to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG SMS message.
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
pidgin (PTS)	jessie, jessie (lts)	2.11.0-0+deb8u2	fixed
	stretch (security), stretch (lts), stretch	2.12.0-1+deb9u1	fixed
	buster	2.13.0-2	fixed
	bullseye	2.14.1-1	fixed
	bookworm	2.14.12-1	fixed
	sid, trixie	2.14.13-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
pidgin	source	(unstable)	2.7.11-1	low

[lenny] - pidgin <no-dsa> (Minor issue)
[squeeze] - pidgin <no-dsa> (Minor issue)