CVE-2011-4601

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-12-25 · updated 2026-06-16
Weakness: CWE-20

Description

family_feedbag.c in the oscar protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted (1) AIM or (2) ICQ message associated with buddy-list addition.

Affected products

Pidgin: through 2.10.0; 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0 (+38)

References

http://developer.pidgin.im/viewmtn/revision/diff/bc79b1bf09dcfa1d8edac86a06761fce7416e69c/with/757272a78a8ca6027d518e614712c3399e34dda3/libpurple/protocols/oscar/family_feedbag.c
http://developer.pidgin.im/viewmtn/revision/info/757272a78a8ca6027d518e614712c3399e34dda3
http://pidgin.im/news/security/?id=57
http://secunia.com/advisories/47219
http://secunia.com/advisories/47234
http://www.mandriva.com/security/advisories?name=MDVSA-2011:183
http://www.openwall.com/lists/oss-security/2011/12/10/1
http://www.openwall.com/lists/oss-security/2011/12/10/2
http://www.redhat.com/support/errata/RHSA-2011-1820.html
http://www.redhat.com/support/errata/RHSA-2011-1821.html
http://www.securityfocus.com/bid/51010
https://hermes.opensuse.org/messages/13195955

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