National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-2943 Detail

Current 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.

Source:  MITRE
View Analysis Description

Evaluator Description

Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c Patch
http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43 Patch
http://pidgin.im/news/security/?id=53 Patch Vendor Advisory
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%3Adef%3A18005

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:pidgin:libpurple:2.8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:libpurple:2.9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.1.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.2.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.3.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.3.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.4.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.4.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.4.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.5.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.6.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.7.11:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:2.8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.9.0


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-2943
NVD Published Date:
08/29/2011
NVD Last Modified:
09/18/2017