source: http://www.securityfocus.com/bid/5942/info

phpBBmod ships with a sample script (phpinfo.php) that may disclosure sensitive information to remote attackers. When this script is accessed, sensitive information about the underlying environment will be revealed.

This issue was reported in phpBBmod version 1.3.3. Other versions may also be affected. 

http://www.example.com/phpBB/phpinfo.php