A NULL pointer dereference flaw was found in the Pidgin XMPP protocol plugin,
by processing error iq response(s) when trying to fetch a custom smiley.
A remote client could send a specially-crafted iq error response, leading
to a denial of service (Pidgin crash).
Florob, Waqas, Paul Aurich and Marcus Lundblad
This issue does NOT affect the version of Pidgin package, as shipped
with Red Hat Enterprise Linux 3.
This issue affects the versions of Pidgin package, as shipped
with Red Hat Enterprise Linux 4 and 5.
This issue was already addressed in the versions of Pidgin
package, as shipped with Fedora 10 and 11. Relevant versions:
Fedora 10: pidgin-2.6.2-1.fc10.1
Fedora 11: pidgin-2.6.2-1.fc11
Common Vulnerabilities and Exposures assigned an identifier CVE-2009-3085 to
the following vulnerability:
The XMPP protocol plugin in libpurple in Pidgin before 2.6.2 does not
properly handle an error IQ stanza during an attempted fetch of a
custom smiley, which allows remote attackers to cause a denial of
service (application crash) via XHTML-IM content with cid: images.
This issue has been addressed in following products:
Red Hat Enterprise Linux 4
Red Hat Enterprise Linux 5
Via RHSA-2009:1453 https://rhn.redhat.com/errata/RHSA-2009-1453.html