The JSON_parser function (ext/json/JSON_parser.c) in PHP 5.2.x before 5.2.9 allows remote attackers to cause a denial of service (segmentation fault) via a malformed string to the json_decode API function.
cvs.php.net/viewvc.cgi/php-src/ext/json/JSON_parser.c?r1=1.1.2.14&r2=1.1.2.15
lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
secunia.com/advisories/34770
secunia.com/advisories/34830
secunia.com/advisories/34933
secunia.com/advisories/35003
secunia.com/advisories/35007
secunia.com/advisories/35306
secunia.com/advisories/35685
secunia.com/advisories/36701
support.apple.com/kb/HT3865
www.debian.org/security/2009/dsa-1775
www.debian.org/security/2009/dsa-1789
www.mandriva.com/security/advisories?name=MDVSA-2009:090
www.openwall.com/lists/oss-security/2009/04/01/9
www.php.net/releases/5_2_9.php
www.redhat.com/support/errata/RHSA-2009-0350.html
www.ubuntu.com/usn/USN-761-2
usn.ubuntu.com/761-1/
www.redhat.com/archives/fedora-package-announce/2009-May/msg01451.html
www.redhat.com/archives/fedora-package-announce/2009-May/msg01465.html