Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007).
http://docs.info.apple.com/article.html?artnum=306172
http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html
http://rhn.redhat.com/errata/RHSA-2007-0154.html
http://rhn.redhat.com/errata/RHSA-2007-0155.html
http://rhn.redhat.com/errata/RHSA-2007-0163.html
http://secunia.com/advisories/24910
http://secunia.com/advisories/24924
http://secunia.com/advisories/24941
http://secunia.com/advisories/24945
http://secunia.com/advisories/25025
http://secunia.com/advisories/25062
http://secunia.com/advisories/25445
http://secunia.com/advisories/26235
http://security.gentoo.org/glsa/glsa-200705-19.xml
https://exchange.xforce.ibmcloud.com/vulnerabilities/33575
https://issues.rpath.com/browse/RPL-1268
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10406
http://www.debian.org/security/2007/dsa-1282
http://www.debian.org/security/2007/dsa-1283
http://www.mandriva.com/security/advisories?name=MDKSA-2007:087
http://www.mandriva.com/security/advisories?name=MDKSA-2007:088