CVE-2011-2943

N/A Unknown
Published: August 29, 2011 Modified: April 29, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
Source: secalert@redhat.com
Patch
http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
Source: secalert@redhat.com
Patch
http://pidgin.im/news/security/?id=53
Source: secalert@redhat.com
Patch Vendor Advisory
http://secunia.com/advisories/45663
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/45916
Source: secalert@redhat.com
http://securitytracker.com/id?1025961
Source: secalert@redhat.com
http://www.openwall.com/lists/oss-security/2011/08/20/2
Source: secalert@redhat.com
http://www.openwall.com/lists/oss-security/2011/08/22/2
Source: secalert@redhat.com
http://www.securityfocus.com/bid/49268
Source: secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=722939
Source: secalert@redhat.com
https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
Source: secalert@redhat.com
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005
Source: secalert@redhat.com
http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://pidgin.im/news/security/?id=53
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
http://secunia.com/advisories/45663
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/45916
Source: af854a3a-2127-422b-91ae-364da2661108
http://securitytracker.com/id?1025961
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/08/20/2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/08/22/2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/49268
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=722939
Source: af854a3a-2127-422b-91ae-364da2661108
https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
Source: af854a3a-2127-422b-91ae-364da2661108
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005
Source: af854a3a-2127-422b-91ae-364da2661108

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
3.6%
88th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

pidgin