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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pidgin | Libpurple | 2.8.0 |
| Pidgin | Pidgin | <= 2.9.0 |
References
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6fPatch
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4Patch
- http://pidgin.im/news/security/?id=53PatchVendor Advisory
- http://secunia.com/advisories/45663Vendor Advisory
- http://secunia.com/advisories/45916
- http://securitytracker.com/id?1025961
- http://www.openwall.com/lists/oss-security/2011/08/20/2
- http://www.openwall.com/lists/oss-security/2011/08/22/2
- http://www.securityfocus.com/bid/49268
- https://bugzilla.redhat.com/show_bug.cgi?id=722939
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6fPatch
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4Patch
- http://pidgin.im/news/security/?id=53PatchVendor Advisory
FAQ
What is CVE-2011-2943?
CVE-2011-2943 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 re...
How severe is CVE-2011-2943?
CVE-2011-2943 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2943?
Check the references section above for vendor advisories and patch information. Affected products include: Pidgin Libpurple, Pidgin Pidgin.