CVE-2011-1091

Severity: medium (CVSS 4.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-03-14 · updated 2026-06-16

Description

libymsg.c in the Yahoo! protocol plugin in libpurple in Pidgin 2.6.0 through 2.7.10 allows (1) remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG notification packet, and allows (2) remote Yahoo! servers to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG SMS message.

Affected products

Pidgin: 2.6.0, 2.6.1, 2.6.2, 2.6.4, 2.6.5, 2.6.6 (+11)

References

http://developer.pidgin.im/viewmtn/revision/diff/5cbe18129b6e7c660bc093f7e5e1414ceca17d04/with/a7c415abba1f5f01f79295337518837f73d99bb7/libpurple/protocols/yahoo/libymsg.c
http://developer.pidgin.im/viewmtn/revision/info/a7c415abba1f5f01f79295337518837f73d99bb7
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055874.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056309.html
http://secunia.com/advisories/43695
http://secunia.com/advisories/43721
http://secunia.com/advisories/46376
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.466884
http://www.pidgin.im/news/security/?id=51
http://www.redhat.com/support/errata/RHSA-2011-0616.html
http://www.redhat.com/support/errata/RHSA-2011-1371.html
http://www.securityfocus.com/bid/46837

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