Critical security issue in PHP

when used in CGI - based setup

[jecasc]

[kb.cert.org...]

When PHP is used in a CGI-based setup (such as Apache's mod_cgid), the php-cgi receives a processed query string parameter as command line arguments which allows command-line switches, such as -s, -d or -c to be passed to the php-cgi binary, which can be exploited to disclose source code and obtain arbitrary code execution.

An example of the -s command, allowing an attacker to view the source code of index.php is below:

 http://localhost/index.php?-s

Ouch. According to the PHP website, this has been around for the last eight years.

PHP has released versions PHP 5.3.12 and PHP 5.4.2, as well as an official mod_rewrite based workaround:

[php.net...]

[coopster]

And PHP 5.4.3 was also released on May 8. Anybody know the percentage of CGI versus mod_php installations?