| Name | CVE-2011-2943 |
| Description | The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0 does not properly validate characters in nicknames, which allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 638709 |
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 | lenny | (not affected) | | | |
| pidgin | source | squeeze | (not affected) | | | |
| pidgin | source | (unstable) | 2.10.0-1 | | | 638709 |
Notes
[squeeze] - pidgin <not-affected> (Only affects 2.8 to 2.10)
[lenny] - pidgin <not-affected> (Only affects 2.8 to 2.10)