Description
The ProcSetEventMask function in difs/events.c in the xfs font server for X.Org X11R6 through X11R6.6 and XFree86 before 3.3.3 calls the SendErrToClient function with a mask value instead of a pointer, which allows local users to cause a denial of service (memory corruption and crash) or obtain potentially sensitive information from memory via a SetEventMask request that triggers an invalid pointer dereference.
References
- oval:org.mitre.oval:def:19369 vdb-entry signature
- http://twitter.com/bsdaemon/status/228958599790071809
- https://blogs.oracle.com/sunsecurity/entry/cve_2012_1699_denial_of
- HPSBUX02829 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=842841
- [xorg-announce] 20120724 X.Org security advisory: DoS/info leak in xfs prior to X11R6.7/XFree86 3.3.3 mailing-list
- http://invisible-island.net/ansification/ansify-xfs-cve.html