The zend_hash_init function in PHP 5 before 5.2.1 and PHP 4 before 4.4.5, when running on a 64-bit platform, allows context-dependent attackers to cause a denial of service (infinite loop) by unserializing certain integer expressions, which only cause 32-bit arguments to be used after the check for a negative value, as demonstrated by an “a:2147483649:{” argument.
ftp://patches.sgi.com/support/free/security/advisories/20070201-01-P.asc
bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228858
h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01056506
h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01086137
osvdb.org/32762
rhn.redhat.com/errata/RHSA-2007-0089.html
secunia.com/advisories/24195
secunia.com/advisories/24217
secunia.com/advisories/24236
secunia.com/advisories/24248
secunia.com/advisories/24284
secunia.com/advisories/24295
secunia.com/advisories/24322
secunia.com/advisories/24419
secunia.com/advisories/24421
secunia.com/advisories/24432
secunia.com/advisories/24606
secunia.com/advisories/24642
secunia.com/advisories/25056
secunia.com/advisories/25423
secunia.com/advisories/25850
security.gentoo.org/glsa/glsa-200703-21.xml
securityreason.com/securityalert/2315
support.avaya.com/elmodocs2/security/ASA-2007-101.htm
support.avaya.com/elmodocs2/security/ASA-2007-136.htm
www.mandriva.com/security/advisories?name=MDKSA-2007:048
www.novell.com/linux/security/advisories/2007_32_php.html
www.openpkg.com/security/advisories/OpenPKG-SA-2007.010.html
www.php-security.org/MOPB/MOPB-05-2007.html
www.php.net/releases/5_2_1.php
www.redhat.com/support/errata/RHSA-2007-0076.html
www.redhat.com/support/errata/RHSA-2007-0081.html
www.redhat.com/support/errata/RHSA-2007-0082.html
www.redhat.com/support/errata/RHSA-2007-0088.html
www.securityfocus.com/archive/1/461462/100/0/threaded
www.securitytracker.com/id?1017671
www.trustix.org/errata/2007/0009/
www.ubuntu.com/usn/usn-424-1
www.ubuntu.com/usn/usn-424-2
www.us.debian.org/security/2007/dsa-1264
www.vupen.com/english/advisories/2007/1991
www.vupen.com/english/advisories/2007/2374
exchange.xforce.ibmcloud.com/vulnerabilities/32709
issues.rpath.com/browse/RPL-1088
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11092