eduTrac - 'showmask' Directory Traversal

source: https://www.securityfocus.com/bid/64255/info

eduTrac is prone to a directory-traversal vulnerability because it fails to properly sanitize user-supplied input.

A remote attacker could exploit the vulnerability using directory-traversal characters ('../') to access arbitrary files that contain sensitive information. Information harvested may aid in launching further attacks.

eduTrac 1.1.1 is vulnerable; other versions may also be affected.

http://www.example.com/installer/overview.php?step=writeconfig&showmask=../../eduTrac/Config/constants.php