PHP 4.4.x before 4.4.9, and 5.x through 5.2.6, when used as a FastCGI module, allows remote attackers to cause a denial of service (crash) via a request with multiple dots preceding the extension, as demonstrated using foo..php.
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01465.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01451.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9597
https://exchange.xforce.ibmcloud.com/vulnerabilities/44402
http://www.vupen.com/english/advisories/2009/1297
http://www.vupen.com/english/advisories/2008/2336
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
http://www.securitytracker.com/id?1020994
http://www.securityfocus.com/archive/1/501376/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-0350.html
http://www.openwall.com/lists/oss-security/2008/08/13/8
http://www.openwall.com/lists/oss-security/2008/08/08/2
http://www.mandriva.com/security/advisories?name=MDVSA-2009:024
http://www.mandriva.com/security/advisories?name=MDVSA-2009:023
http://www.mandriva.com/security/advisories?name=MDVSA-2009:022
http://www.mandriva.com/security/advisories?name=MDVSA-2009:021
http://www.debian.org/security/2008/dsa-1647
http://wiki.rpath.com/Advisories:rPSA-2009-0035
http://support.apple.com/kb/HT3549
http://security.gentoo.org/glsa/glsa-200811-05.xml
http://secunia.com/advisories/35650
http://secunia.com/advisories/35306
http://secunia.com/advisories/35074
http://secunia.com/advisories/32746
http://secunia.com/advisories/32148
http://secunia.com/advisories/31982
http://marc.info/?l=bugtraq&m=125631037611762&w=2
http://marc.info/?l=bugtraq&m=124654546101607&w=2
http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00004.html
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html