CVE-2010-4645 Information

Description

strtod.c as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5 and other products allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation which is not properly handled in x87 FPU registers as demonstrated using 2.2250738585072011e-308.

Reference

http://bugs.php.net/53632 http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053333.html http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.html http://marc.info/?l=bugtraq&m=133226187115472&w=2 http://marc.info/?l=bugtraq&m=133469208622507&w=2 http://secunia.com/advisories/42812 http://secunia.com/advisories/42843 http://secunia.com/advisories/43051 http://secunia.com/advisories/43189 http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.484686 http://support.apple.com/kb/HT5002 http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095 http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/ http://www.openwall.com/lists/oss-security/2011/01/05/2 http://www.openwall.com/lists/oss-security/2011/01/05/8 http://www.openwall.com/lists/oss-security/2011/01/06/5 http://www.redhat.com/support/errata/RHSA-2011-0195.html http://www.redhat.com/support/errata/RHSA-2011-0196.html http://www.securityfocus.com/bid/45668 http://www.ubuntu.com/usn/USN-1042-1 http://www.vupen.com/english/advisories/2011/0060 http://www.vupen.com/english/advisories/2011/0066 http://www.vupen.com/english/advisories/2011/0077 http://www.vupen.com/english/advisories/2011/0198 https://exchange.xforce.ibmcloud.com/vulnerabilities/64470