fkie_cve-2011-2943
Vulnerability from fkie_nvd
Published
2011-08-29 17:55
Modified
2025-04-11 00:51
Severity ?
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| pidgin | libpurple | 2.8.0 | |
| pidgin | libpurple | 2.9.0 | |
| pidgin | pidgin | * | |
| pidgin | pidgin | 2.0.0 | |
| pidgin | pidgin | 2.0.1 | |
| pidgin | pidgin | 2.0.2 | |
| pidgin | pidgin | 2.1.0 | |
| pidgin | pidgin | 2.1.1 | |
| pidgin | pidgin | 2.2.0 | |
| pidgin | pidgin | 2.2.1 | |
| pidgin | pidgin | 2.2.2 | |
| pidgin | pidgin | 2.3.0 | |
| pidgin | pidgin | 2.3.1 | |
| pidgin | pidgin | 2.4.0 | |
| pidgin | pidgin | 2.4.1 | |
| pidgin | pidgin | 2.4.2 | |
| pidgin | pidgin | 2.4.3 | |
| pidgin | pidgin | 2.5.0 | |
| pidgin | pidgin | 2.5.1 | |
| pidgin | pidgin | 2.5.2 | |
| pidgin | pidgin | 2.5.3 | |
| pidgin | pidgin | 2.5.4 | |
| pidgin | pidgin | 2.5.5 | |
| pidgin | pidgin | 2.5.6 | |
| pidgin | pidgin | 2.5.7 | |
| pidgin | pidgin | 2.5.8 | |
| pidgin | pidgin | 2.5.9 | |
| pidgin | pidgin | 2.6.0 | |
| pidgin | pidgin | 2.6.1 | |
| pidgin | pidgin | 2.6.2 | |
| pidgin | pidgin | 2.6.4 | |
| pidgin | pidgin | 2.6.5 | |
| pidgin | pidgin | 2.6.6 | |
| pidgin | pidgin | 2.7.0 | |
| pidgin | pidgin | 2.7.1 | |
| pidgin | pidgin | 2.7.2 | |
| pidgin | pidgin | 2.7.3 | |
| pidgin | pidgin | 2.7.4 | |
| pidgin | pidgin | 2.7.5 | |
| pidgin | pidgin | 2.7.6 | |
| pidgin | pidgin | 2.7.7 | |
| pidgin | pidgin | 2.7.8 | |
| pidgin | pidgin | 2.7.9 | |
| pidgin | pidgin | 2.7.10 | |
| pidgin | pidgin | 2.7.11 | |
| pidgin | pidgin | 2.8.0 |
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "La funci\u00f3n irc_msg_who en msgs.c en el plugin del protocolo IRC en libpurple v2.8.0 hasta v2.9.0 en Pidgin anterior a v2.10.0 no valida adecuadamente caracteres en nombres de usuario, lo que permite a atacantes remotos asistidos por el usuario provocar una denegaci\u00f3n de servicio (desreferenciar un puntero NULL y ca\u00edda de la aplicaci\u00f3n) a trav\u00e9s del nombre de usuario que no se maneja adecuadamente en una respuesta WHO."
}
],
"evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\r\n\u0027CWE-476: NULL Pointer Dereference\u0027",
"id": "CVE-2011-2943",
"lastModified": "2025-04-11T00:51:21.963",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2011-08-29T17:55:00.957",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Deferred",
"weaknesses": [
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"value": "NVD-CWE-Other"
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"type": "Primary"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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