GuestBook Scripts PHP v1.5 - Multiple Web Vulnerabilites

[Research <research () vulnerability-lab com>]

Title:
======
GuestBook Scripts PHP v1.5 - Multiple Web Vulnerabilites


Date:
=====
2012-06-11


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=601


VL-ID:
=====
601


Common Vulnerability Scoring System:
====================================
7.5


Introduction:
=============
GuestBook Script PHP is a script that is very easy to install, administer and use on your website.
Visitors to your website can leave comments and feedback. Also you can use it for testimonials.
Features of GuestBook Script PHP:

    password protected administrator page
    converts easily to any language
    full control over the visual style
    simple one step installation
    easy to place on your webpage - copy and paste a single line of code
    select only the fields that you want to appear on the GuestBook form
    ability to set mandatory(required) fields on the GuestBook form
    each comment poster will be able to upload own photo (icon/avatar)
    rating stars option for the feedback
    emoticons support with show/hide option
    limit the number of characters in the comment area
    set the number of comments per page
    sort the order of entries
    create a list of words that will be banned from the GuestBook
    create a list of IP addresses that will be banned from using the GuestBook
    prevention of HTML and javascript injections
    choose between two types of captcha antispam code - simple and reCaptcha
    100% stop spam by using the reCaptcha image
    different captcha image themes to suit your website colors
    ability to approve comments/feedback before they are viewed publicly
    edit email address where all new entries notifications will be sent to
    option to send   thank you message to the commenter after posting
    RSS Feed validated by W3C
    full source code supplied

Requirements: PHP 4.3 or higher and MySQL 3 or higher running on your webserver.
Current stable version of GuestBook Script PHP is 1.5 

( Copy of the Vendor Homepage: http://www.guestbookscripts.com )


Abstract:
=========
The Vulnerability Laboratory Research Team discovered multiple different web vulnerabilites in GuestBook Scripts PHP 
1.5 CMS.



Report-Timeline:
================
2012-06-11:     Public or Non-Public Disclosure


Status:
========
Published


Exploitation-Technique:
=======================
Remote


Severity:
=========
High


Details:
========
1.1
Multiple SQL Injection vulnerabilities  are detected in the GuestBook Scripts PHP 1.5 Content Management System.
The vulnerability allows an attacker (remote) or local low privileged user account to inject/execute own sql 
commands on the affected application dbms without user inter action. Successful exploitation of the vulnerability 
results in dbms & application compromise. The vulnerabilities are located in the guestbook.php or admin.php files 
and the bound parameters p, orderType & orderBy. The sql injection vulnerabilities can be exploited by remote attackers 
without user 
inter action & without privileged user account. 

Vulnerable File(s):
                        [+] guestbook.php
                        [+] admin.php


Vulnerable Parameter(s):
                        [+] orderType
                        [+] p
                        [+] orderBy



1.2
Multiple non persistent cross site scripting vulnerabilities are detected in the GuestBook Scripts PHP 1.5 Content 
Management System.
The vulnerability allows remote attackers to hijack website customer, moderator or admin sessions with high required 
user inter action 
or local low privileged user account. The vulnerabilities are located in the admin.php file with the bound vulnerable 
search, p & 
ordertype parameters. Successful exploitation can result in account steal, phishing & client-side content request 
manipulation.

Vulnerable File(s):
                        [+] admin.php

Vulnerable Parameter(s):
                        [+] search
                        [+] p
                        [+] orderType


Proof of Concept:
=================
1.1
The SQL Injection vulnerabilities can be exploited by remote attackers with and without privileged user account.
User inter action is not required for exploitation. For demonstration or reproduce ...

http://127.0.0.1:80/cms/guestbook.php?p=[SQL-INJECTION]
http://127.0.0.1:80/cms/guestbook/admin.php?act=comments&orderType=[ASC/DESC]&search=&orderBy=[SQL-INJECTION]
http://127.0.0.1:80/cms/guestbook/admin.php?act=comments&orderType=[SQL-INJECTION]

1.2
The persistent vulnerabilities can be exploited by remote attackers without privileged user account & with low 
required user inter action. For demonstration or reproduce ...

http://127.0.0.1:80/cms/guestbook/admin.php?act=comments&orderType=[ASC/DESC]&search=&orderBy=[CROSS SITE SCrIPTING]
http://127.0.0.1:80/cms/guestbook/admin.php?act=comments&orderType=[ASC/DESC]&search=[CROSS SITE SCrIPTING]
http://127.0.0.1:80/cms/guestbook/admin.php?act=comments&orderType=[CROSS SITE SCrIPTING]


Risk:
=====
1.1
The security risk of the sql injection vulnerabilities are estimated as high.

1.2
The security risk of the input validation vulnerabilities are estiamted as low(+)


Credits:
========
Vulnerability Laboratory [Research Team]  -    snup (snup () vulnerability-lab com) [http://snup1.blogspot.com]



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===========
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