Unrated severityNVD Advisory· Published Aug 29, 2011· Updated Jun 16, 2026
CVE-2011-2943
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
48cpe:2.3:a:pidgin:libpurple:2.8.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:pidgin:libpurple:2.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.9.0:*:*:*:*:*:*:*
- (no CPE)range: >=2.8.0, <=2.9.0
cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*+ 44 more
- cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*range: <=2.9.0
- cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.7:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.8:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.5.9:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.6.6:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.10:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.11:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.6:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.7:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.8:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.7.9:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:pidgin:2.8.0:*:*:*:*:*:*:*
- (no CPE)range: <2.10.0
Patches
Vulnerability mechanics
References
12- developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.cnvdPatch
- developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43nvdPatch
- pidgin.im/news/security/nvdPatchVendor Advisory
- secunia.com/advisories/45663nvdVendor Advisory
- secunia.com/advisories/45916nvd
- securitytracker.com/idnvd
- www.openwall.com/lists/oss-security/2011/08/20/2nvd
- www.openwall.com/lists/oss-security/2011/08/22/2nvd
- www.securityfocus.com/bid/49268nvd
- bugzilla.redhat.com/show_bug.cginvd
- exchange.xforce.ibmcloud.com/vulnerabilities/69340nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005nvd
News mentions
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