CVE-2011-2943 - CVE House
Back to Database
Status published Medium CVE-2011-2943

The irc_msg_who function in msgs.c in the IRC protocol plugin...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2011-2943

Credits & Attribution

No credits recorded in the NVD database.

References

More from pidgin

View All →
CVE-2022-26491
An issue was discovered in Pidgin before 2.14.9. A remote...
Medium 5.9
CVE-2016-2379
The Mxit protocol uses weak encryption when encrypting user passwords,...
High 8.8
CVE-2014-3698
The jabber_idn_validate function in jutil.c in the Jabber protocol plugin...
Medium 5
CVE-2014-3697
Absolute path traversal vulnerability in the untar_block function in win32/untar.c...
Medium 6.4
CVE-2014-3696
nmevent.c in the Novell GroupWise protocol plugin in libpurple in...
Medium 5

Affected Vendor

Affected Software

libpurple, pidgin
Vulnerable Versions:
2.8.0, 2.9.0, 0, 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.5.6, 2.5.7, 2.5.8, 2.5.9, 2.6.0, 2.6.1, 2.6.2, 2.6.4, 2.6.5, 2.6.6, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.7.7, 2.7.8, 2.7.9, 2.7.10, 2.7.11

Timeline

Official Publish: August 29th, 2011
Last Modified: August 6th, 2024
Added to House: July 19th, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.