CVE-2011-2943 (GCVE-0-2011-2943)
Vulnerability from cvelistv5 – Published: 2011-08-29 17:00 – Updated: 2024-08-06 23:15
VLAI
EPSS
VEX
Summary
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.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
12 references
| URL | Tags |
|---|---|
| http://pidgin.im/news/security/?id=53 | x_refsource_CONFIRM |
| http://developer.pidgin.im/viewmtn/revision/info/… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2011/08/22/2 | mailing-listx_refsource_MLIST |
| http://secunia.com/advisories/45663 | third-party-advisoryx_refsource_SECUNIA |
| https://oval.cisecurity.org/repository/search/def… | vdb-entrysignaturex_refsource_OVAL |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://secunia.com/advisories/45916 | third-party-advisoryx_refsource_SECUNIA |
| https://bugzilla.redhat.com/show_bug.cgi?id=722939 | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/49268 | vdb-entryx_refsource_BID |
| http://developer.pidgin.im/viewmtn/revision/diff/… | x_refsource_CONFIRM |
| http://securitytracker.com/id?1025961 | vdb-entryx_refsource_SECTRACK |
| http://www.openwall.com/lists/oss-security/2011/08/20/2 | mailing-listx_refsource_MLIST |
Date Public
2011-08-20 00:00
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"url": "http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://pidgin.im/news/security/?id=53"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/45663"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/45916"
},
{
"source": "secalert@redhat.com",
"url": "http://securitytracker.com/id?1025961"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2011/08/20/2"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2011/08/22/2"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/49268"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=722939"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69340"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://pidgin.im/news/security/?id=53"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/45663"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/45916"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://securitytracker.com/id?1025961"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2011/08/20/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2011/08/22/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/49268"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=722939"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69340"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T12:56:06+00:00",
"cve": "CVE-2011-2943",
"id": "CVE-2011-2943",
"initial_release_date": "2011-07-20T00:00:00+00:00",
"product_status:known_not_affected": "13",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "pidgin: Crash in IRC protocol plug-in by listing set of users (/who command) upon session startup",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-2943.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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