X.Org Xserver before 1.4.1 allows local users to determine the existence of arbitrary files via a filename argument in the -sp option to the X program, which produces different error messages depending on whether the filename exists.
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00704.html
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00641.html
https://www.exploit-db.com/exploits/5152
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5393
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10991
https://issues.rpath.com/browse/RPL-1970
https://exchange.xforce.ibmcloud.com/vulnerabilities/39769
http://www.vupen.com/english/advisories/2008/3000
http://www.vupen.com/english/advisories/2008/0924/references
http://www.vupen.com/english/advisories/2008/0497/references
http://www.vupen.com/english/advisories/2008/0184
http://www.vupen.com/english/advisories/2008/0179
http://www.securityfocus.com/bid/27356
http://www.securityfocus.com/bid/27336
http://www.securityfocus.com/archive/1/487335/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2008-0031.html
http://www.redhat.com/support/errata/RHSA-2008-0030.html
http://www.redhat.com/support/errata/RHSA-2008-0029.html
http://www.openbsd.org/errata42.html#006_xorg
http://www.openbsd.org/errata41.html#012_xorg
http://www.mandriva.com/security/advisories?name=MDVSA-2008:025
http://www.mandriva.com/security/advisories?name=MDVSA-2008:023
http://www.mandriva.com/security/advisories?name=MDVSA-2008:022
http://www.mandriva.com/security/advisories?name=MDVSA-2008:021
http://www.gentoo.org/security/en/glsa/glsa-200805-07.xml
http://www.debian.org/security/2008/dsa-1466
http://support.avaya.com/elmodocs2/security/ASA-2008-084.htm
http://sunsolve.sun.com/search/document.do?assetkey=1-26-230901-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-103205-1
http://securitytracker.com/id?1019232
http://security.gentoo.org/glsa/glsa-200804-05.xml
http://security.gentoo.org/glsa/glsa-200801-09.xml
http://secunia.com/advisories/32545
http://secunia.com/advisories/30161
http://secunia.com/advisories/29707
http://secunia.com/advisories/29622
http://secunia.com/advisories/29420
http://secunia.com/advisories/28997
http://secunia.com/advisories/28885
http://secunia.com/advisories/28843
http://secunia.com/advisories/28718
http://secunia.com/advisories/28616
http://secunia.com/advisories/28592
http://secunia.com/advisories/28584
http://secunia.com/advisories/28550
http://secunia.com/advisories/28543
http://secunia.com/advisories/28542
http://secunia.com/advisories/28540
http://secunia.com/advisories/28539
http://secunia.com/advisories/28536
http://secunia.com/advisories/28535
http://secunia.com/advisories/28532
http://secunia.com/advisories/28273
http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00004.html
http://lists.freedesktop.org/archives/xorg/2008-January/031918.html
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01543321