CVE-2011-2943
Summary
| CVE | CVE-2011-2943 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2011-08-29 17:55:00 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| 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. |
Risk And Classification
Primary CVSS: v2.0 4.3 from [email protected]
AV:N/AC:M/Au:N/C:N/I:N/A:P
Problem Types: NVD-CWE-Other | n/a
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:M/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Pidgin | Libpurple | 2.8.0 | All | All | All |
| Application | Pidgin | Libpurple | 2.9.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.0.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.0.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.0.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.1.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.1.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.2.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.2.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.2.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.3.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.3.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.4.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.4.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.4.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.4.3 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.3 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.4 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.5 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.6 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.7 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.8 | All | All | All |
| Application | Pidgin | Pidgin | 2.5.9 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.4 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.5 | All | All | All |
| Application | Pidgin | Pidgin | 2.6.6 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.0 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.1 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.10 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.11 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.2 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.3 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.4 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.5 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.6 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.7 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.8 | All | All | All |
| Application | Pidgin | Pidgin | 2.7.9 | All | All | All |
| Application | Pidgin | Pidgin | 2.8.0 | All | All | All |
| Application | Pidgin | Pidgin | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Repository / Oval Repository | af854a3a-2127-422b-91ae-364da2661108 | oval.cisecurity.org | |
| Malformed Request | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| 404 Not Found | af854a3a-2127-422b-91ae-364da2661108 | developer.pidgin.im | Patch |
| Pidgin Denial of Service Weaknesses and "file://" Security Issue - Secunia.com | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| SecurityTracker: Pidgin Bugs Let Remote Users Deny Service and Potentially Execute Arbitrary Code | af854a3a-2127-422b-91ae-364da2661108 | securitytracker.com | |
| oss-security - Re: CVE request: Pidgin crash | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| Fedora update for pidgin - Secunia.com | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| Pidgin Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | pidgin.im | Patch, Vendor Advisory |
| 404 Not Found | af854a3a-2127-422b-91ae-364da2661108 | developer.pidgin.im | Patch |
| oss-security - CVE request: Pidgin crash | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| IBM X-Force Exchange | af854a3a-2127-422b-91ae-364da2661108 | exchange.xforce.ibmcloud.com | |
| 722939 – (CVE-2011-2943) CVE-2011-2943 pidgin: Crash in IRC protocol plug-in by listing set of users (/who command) upon session startup | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.