CVE-2011-4939

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-03-15 · updated 2026-06-16
Weakness: CWE-264

Description

The pidgin_conv_chat_rename_user function in gtkconv.c in Pidgin before 2.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by changing a nickname while in an XMPP chat room.

Affected products

Pidgin: through 2.10.1; 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0 (+39)

References

http://developer.pidgin.im/ticket/14392
http://developer.pidgin.im/viewmtn/revision/diff/10ead4688e3af4132d454fa3bc241480500651c9/with/d1d77da56217f3a083e1d459bef054db9f1d5699/pidgin/gtkconv.c
http://developer.pidgin.im/viewmtn/revision/info/d1d77da56217f3a083e1d459bef054db9f1d5699
http://pidgin.im/news/security/?id=60
http://www.mandriva.com/security/advisories?name=MDVSA-2012:029
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18406
http://developer.pidgin.im/ticket/14392
http://developer.pidgin.im/viewmtn/revision/diff/10ead4688e3af4132d454fa3bc241480500651c9/with/d1d77da56217f3a083e1d459bef054db9f1d5699/pidgin/gtkconv.c
http://developer.pidgin.im/viewmtn/revision/info/d1d77da56217f3a083e1d459bef054db9f1d5699
http://pidgin.im/news/security/?id=60
http://www.mandriva.com/security/advisories?name=MDVSA-2012:029
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18406

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