CVE-2011-2943
Estado: ModificadaMedia (4.3)—
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.
CVSS
- Versión: 2.0
- Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
- Puntuación base: 4.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.60%
- Percentil entre todas las CVEs puntuadas: 89
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- NVD-CWE-Other
Referencias
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
- http://pidgin.im/news/security/?id=53
- http://secunia.com/advisories/45663
- http://secunia.com/advisories/45916
- 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
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
- http://pidgin.im/news/security/?id=53
- http://secunia.com/advisories/45663
- http://secunia.com/advisories/45916
- 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
JSON original (NVD)
Mostrar
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"operator": "OR"
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"evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\r\n'CWE-476: NULL Pointer Dereference'",
"sourceIdentifier": "secalert@redhat.com"
}