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Vulnerability Details : CVE-2011-2943

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.
Publish Date : 2011-08-29 Last Update Date : 2017-09-18
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
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 d... oval:org.mitre.oval:def:18005 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-2943

# Product Type Vendor Product Version Update Edition Language
1 Application Pidgin Libpurple 2.8.0 Version Details Vulnerabilities
2 Application Pidgin Libpurple 2.9.0 Version Details Vulnerabilities
3 Application Pidgin Pidgin 2.0.0 Version Details Vulnerabilities
4 Application Pidgin Pidgin 2.0.1 Version Details Vulnerabilities
5 Application Pidgin Pidgin 2.0.2 Version Details Vulnerabilities
6 Application Pidgin Pidgin 2.1.0 Version Details Vulnerabilities
7 Application Pidgin Pidgin 2.1.1 Version Details Vulnerabilities
8 Application Pidgin Pidgin 2.2.0 Version Details Vulnerabilities
9 Application Pidgin Pidgin 2.2.1 Version Details Vulnerabilities
10 Application Pidgin Pidgin 2.2.2 Version Details Vulnerabilities
11 Application Pidgin Pidgin 2.3.0 Version Details Vulnerabilities
12 Application Pidgin Pidgin 2.3.1 Version Details Vulnerabilities
13 Application Pidgin Pidgin 2.4.0 Version Details Vulnerabilities
14 Application Pidgin Pidgin 2.4.1 Version Details Vulnerabilities
15 Application Pidgin Pidgin 2.4.2 Version Details Vulnerabilities
16 Application Pidgin Pidgin 2.4.3 Version Details Vulnerabilities
17 Application Pidgin Pidgin 2.5.0 Version Details Vulnerabilities
18 Application Pidgin Pidgin 2.5.1 Version Details Vulnerabilities
19 Application Pidgin Pidgin 2.5.2 Version Details Vulnerabilities
20 Application Pidgin Pidgin 2.5.3 Version Details Vulnerabilities
21 Application Pidgin Pidgin 2.5.4 Version Details Vulnerabilities
22 Application Pidgin Pidgin 2.5.5 Version Details Vulnerabilities
23 Application Pidgin Pidgin 2.5.6 Version Details Vulnerabilities
24 Application Pidgin Pidgin 2.5.7 Version Details Vulnerabilities
25 Application Pidgin Pidgin 2.5.8 Version Details Vulnerabilities
26 Application Pidgin Pidgin 2.5.9 Version Details Vulnerabilities
27 Application Pidgin Pidgin 2.6.0 Version Details Vulnerabilities
28 Application Pidgin Pidgin 2.6.1 Version Details Vulnerabilities
29 Application Pidgin Pidgin 2.6.2 Version Details Vulnerabilities
30 Application Pidgin Pidgin 2.6.4 Version Details Vulnerabilities
31 Application Pidgin Pidgin 2.6.5 Version Details Vulnerabilities
32 Application Pidgin Pidgin 2.6.6 Version Details Vulnerabilities
33 Application Pidgin Pidgin 2.7.0 Version Details Vulnerabilities
34 Application Pidgin Pidgin 2.7.1 Version Details Vulnerabilities
35 Application Pidgin Pidgin 2.7.2 Version Details Vulnerabilities
36 Application Pidgin Pidgin 2.7.3 Version Details Vulnerabilities
37 Application Pidgin Pidgin 2.7.4 Version Details Vulnerabilities
38 Application Pidgin Pidgin 2.7.5 Version Details Vulnerabilities
39 Application Pidgin Pidgin 2.7.6 Version Details Vulnerabilities
40 Application Pidgin Pidgin 2.7.7 Version Details Vulnerabilities
41 Application Pidgin Pidgin 2.7.8 Version Details Vulnerabilities
42 Application Pidgin Pidgin 2.7.9 Version Details Vulnerabilities
43 Application Pidgin Pidgin 2.7.10 Version Details Vulnerabilities
44 Application Pidgin Pidgin 2.7.11 Version Details Vulnerabilities
45 Application Pidgin Pidgin 2.8.0 Version Details Vulnerabilities
46 Application Pidgin Pidgin 2.9.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Pidgin Libpurple 2
Pidgin Pidgin 44

- References For CVE-2011-2943

http://www.openwall.com/lists/oss-security/2011/08/20/2
MLIST [oss-security] 20110820 CVE request: Pidgin crash
http://www.securityfocus.com/bid/49268
BID 49268 Pidgin Denial of Service and Security Bypass Vulnerabilities Release Date:2012-09-25
https://bugzilla.redhat.com/show_bug.cgi?id=722939 CONFIRM
http://pidgin.im/news/security/?id=53 CONFIRM
http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43 CONFIRM
http://securitytracker.com/id?1025961
SECTRACK 1025961
http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c CONFIRM
http://www.openwall.com/lists/oss-security/2011/08/22/2
MLIST [oss-security] 20110822 Re: CVE request: Pidgin crash
https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
XF pidgin-irc-protocol-dos(69340)

- Metasploit Modules Related To CVE-2011-2943

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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