CVE-2009-4142 Information

Description

The htmlspecialchars function in PHP before 5.2.12 does not properly handle (1) overlong UTF-8 sequences (2) invalid Shift_JIS sequences and (3) invalid EUC-JP sequences which allows remote attackers to conduct cross-site scripting (XSS) attacks by placing a crafted byte sequence before a special character.

Reference

http://bugs.php.net/bug.php?id=49785 http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html http://marc.info/?l=bugtraq&m=127680701405735&w=2 http://secunia.com/advisories/37821 http://secunia.com/advisories/38648 http://secunia.com/advisories/40262 http://securitytracker.com/id?1023372 http://support.apple.com/kb/HT4077 http://www.debian.org/security/2010/dsa-2001 http://www.php.net/ChangeLog-5.php http://www.php.net/releases/5_2_12.php http://www.securityfocus.com/bid/37389 http://www.vupen.com/english/advisories/2009/3593 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10005 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A7085