Two vulnerabilities have been reported in PHP, which can be exploited by malicious people to disclose certain sensitive information or compromise a vulnerable system.

1) An error when parsing certain QUERY_STRING parameters can be exploited to e.g. disclose the PHP source code or execute arbitrary code.

This vulnerability is reported in versions 5.3.12 and prior and versions 5.4.2 and prior.

2) An error in the "apache_request_headers()" function can be exploited to cause a buffer overflow.

NOTE: This vulnerability affects version 5.4 only.

Solution
Update to versions 5.4.3 and 5.3.13.

Provided and/or discovered by
1) De Eindbazen
2) Reported in PHP bug report.

Changelog
Further details available to Secunia VIM customers

Original Advisory
PHP:
https://bugs.php.net/bug.php?id=61910
https://bugs.php.net/bug.php?id=61807
http://www.php.net/archive/2012.php#id2012-05-08-1

De Eindbazen:
http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/

US-CERT VU#520827:
http://www.kb.cert.org/vuls/id/520827

Alternate/detailed remediation
Further details available in Customer Area

Deep Links
Links available to Secunia VIM customers