Cross-site Scripting (XSS) / HTML injection on Webbler CMS admin login page (1)

Vulnerability found:

14 June 2007

Severity level:

Medium/High

Credits:

Adrian Pastor of ProCheckUp. ProCheckUp thanks Tincan for fixing this vulnerability so promptly.

Description:

Webbler CMS is vulnerable to XSS within the "/uploader/index.php" server-side script
and 'page' parameter.
No authentication is required to exploit this vulnerability.

Consequences

An attacker may be able to cause execution of malicious scripting code in the browser of a

user who clicks on a link to a site generated/managed by Webbler CMS. HTML tags can also

be injected.
This type of attack can result in non-persistent defacement of the target site, or the redirection

of confidential information to unauthorised third parties.
HTML injection PoC URL
http://target-domain.com/uploader/?page=</title><h1>html%20injection%20test</h1>

Note

The version number is usually included within 'meta' HTML tags and 'X-Powered-By'

HTTP response headers. i.e. -
<meta name="generator" content="webbler 3.1.3 - http://tincan.co.uk/webbler" />
X-Powered-By: webbler version 3.1.3

Successfully tested on

Server environment -

Webbler CMS 3.1.3

PHP 5.1.6

Apache web server (unknown version)

Client environment -

Microsoft Internet Explorer 7.0.5730.11

Proof of concept:

http://target-domain.com/uploader/?page=<script>alert(document.cookie)</script>

How to fix:

This issue has been fixed on version version 3.1.6.

References:

http://tincan.co.uk/webbler

http://tincan.co.uk/?lid=1975

http://www.procheckup.com/Vulner_2007.php

Legal:

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