Input validation error in PHP - CVE-2010-4699

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The iconv_mime_decode_headers function in the Iconv extension in PHP before 5.3.4 does not properly handle encodings that are unrecognized by the iconv and mbstring (aka Multibyte String) implementations, which allows remote attackers to trigger an incomplete output array, and possibly bypass spam detection or have unspecified other impact, via a crafted Subject header in an e-mail message, as demonstrated by the ks_c_5601-1987 character set.

Affected software

How to mitigate CVE-2010-4699

External References

• http://bugs.php.net/52941
• http://coding.derkeiler.com/Archive/PHP/php.general/2007-04/msg00605.html
• http://www.php.net/ChangeLog-5.php
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64963
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12393

Related Security Bulletins

• Multiple vulnerabilities in PHP
• Gentoo update for PHP