CVE-2011-4028 Information

Description

The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to determine the existence of arbitrary files via a symlink attack on a temporary lock file which is handled differently if the file exists.

Reference

http://cgit.freedesktop.org/xorg/xserver/commit/?id=6ba44b91e37622ef8c146d8f2ac92d708a18ed34 http://lists.freedesktop.org/archives/xorg/2011-October/053680.html http://rhn.redhat.com/errata/RHSA-2012-0939.html http://secunia.com/advisories/46460 http://secunia.com/advisories/49579