CVE-2007-4661 Information

Description

The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers which has unknown attack vectors and impact possibly resulting in a heap-based buffer overflow. NOTE: this is due to an incomplete fix for CVE-2007-2872.

Reference

http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.58&r2=1.445.2.14.2.59 http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html http://secunia.com/advisories/26642 http://secunia.com/advisories/26838 http://secunia.com/advisories/27102 http://secunia.com/advisories/27864 http://secunia.com/advisories/28658 http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml http://www.php.net/ChangeLog-5.php5.2.4 http://www.php.net/releases/5_2_4.php http://www.ubuntu.com/usn/usn-549-2 https://issues.rpath.com/browse/RPL-1702 https://launchpad.net/bugs/173043 https://usn.ubuntu.com/549-1/