source: http://www.securityfocus.com/bid/15221/info
 
ATutor is prone to multiple vulnerabilities.
 
These issues can allow remote attackers to execute arbitrary PHP commands and carry out local file include and cross-site scripting attacks.
 
ATutor 1.5.1-pl1 and prior versions are affected. 

http://www.example.com/documentation/common/body_header.inc.php?section=[file]%00