CVEvulnerability

CVE-2011-2943

4.3 MEDIUM Published 2011-08-29 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-08-29
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P

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.

Affected configurations

• pidgin libpurple 2.8.0 • pidgin libpurple 2.9.0 • pidgin pidgin (<= 2.9.0) • pidgin pidgin 2.0.0 • pidgin pidgin 2.0.1 • pidgin pidgin 2.0.2 • pidgin pidgin 2.1.0 • pidgin pidgin 2.1.1 • pidgin pidgin 2.2.0 • pidgin pidgin 2.2.1 • pidgin pidgin 2.2.2 • pidgin pidgin 2.3.0 • pidgin pidgin 2.3.1 • pidgin pidgin 2.4.0 • pidgin pidgin 2.4.1 • pidgin pidgin 2.4.2 • pidgin pidgin 2.4.3 • pidgin pidgin 2.5.0 • pidgin pidgin 2.5.1 • pidgin pidgin 2.5.2 • pidgin pidgin 2.5.3 • pidgin pidgin 2.5.4 • pidgin pidgin 2.5.5 • pidgin pidgin 2.5.6 • pidgin pidgin 2.5.7 • pidgin pidgin 2.5.8 • pidgin pidgin 2.5.9 • pidgin pidgin 2.6.0 • pidgin pidgin 2.6.1 • pidgin pidgin 2.6.2 • pidgin pidgin 2.6.4 • pidgin pidgin 2.6.5 • pidgin pidgin 2.6.6 • pidgin pidgin 2.7.0 • pidgin pidgin 2.7.1 • pidgin pidgin 2.7.2 • pidgin pidgin 2.7.3 • pidgin pidgin 2.7.4 • pidgin pidgin 2.7.5 • pidgin pidgin 2.7.6 • pidgin pidgin 2.7.7 • pidgin pidgin 2.7.8 • pidgin pidgin 2.7.9 • pidgin pidgin 2.7.10 • pidgin pidgin 2.7.11 • pidgin pidgin 2.8.0

References