libgadu before 1.11.4 and 1.12.0 before 1.12.0-rc3, as used in Pidgin and other products, allows remote Gadu-Gadu file relay servers to cause a denial of service (memory overwrite) or possibly execute arbitrary code via a crafted message.
lists.ziew.org/pipermail/libgadu-devel/2014-May/001171.html
lists.ziew.org/pipermail/libgadu-devel/2014-May/001180.html
secunia.com/advisories/58668
secunia.com/advisories/58870
secunia.com/advisories/58871
www.debian.org/security/2014/dsa-2935
www.openwall.com/lists/oss-security/2014/05/19/3
www.securityfocus.com/bid/67471
www.ubuntu.com/usn/USN-2215-1
www.ubuntu.com/usn/USN-2216-1
bugzilla.redhat.com/show_bug.cgi?id=1099776
security.gentoo.org/glsa/201508-02