Stack-based buffer overflow in the url::get_pac function in url.cpp in libproxy 0.4.x before 0.4.9 allows remote servers to have an unspecified impact via a large proxy.pac file.
https://groups.google.com/forum/?fromgroups=#%21topic/libproxy/VxZ8No7mT0E
https://exchange.xforce.ibmcloud.com/vulnerabilities/79249
https://bugzilla.redhat.com/show_bug.cgi?id=864417
http://www.ubuntu.com/usn/USN-1629-1
http://www.securityfocus.com/bid/55909
http://www.openwall.com/lists/oss-security/2012/10/16/3
http://www.openwall.com/lists/oss-security/2012/10/12/5
http://www.openwall.com/lists/oss-security/2012/10/12/1
http://secunia.com/advisories/51048
http://lists.opensuse.org/opensuse-updates/2012-10/msg00065.html