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ProCheckUp Security Advisory 2007.18

ProCheckUp Security Advisory 2007.18
Posted Jul 25, 2007
Authored by Adrian Pastor, ProCheckUp

A cross site scripting vulnerability exists in index.php of Webbler CMS version 3.1.3.

tags | exploit, php, xss
SHA-256 | 87051462fc945e497754082567172ef3988047c8fc4db3d220a1645c04d9f3f7

ProCheckUp Security Advisory 2007.18

Change Mirror Download
PR07-18: Cross-site Scripting (XSS) / HTML injection on Webbler CMS admin login page (1)

This advisory has been published following consultation with UK CPNI (formerly known as NISCC)

Date Found: 14th June 2007


Successfully tested on: Webbler CMS version 3.1.3. Earlier versions are possibly affected as well.

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


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.


XSS Proof of concept (PoC) URL:

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


HTML injection PoC URL:

http://target-domain.com/uploader/?page=</title><h1>html%20injection%20test</h1>


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


Severity: Medium/High


Author: Adrian Pastor of ProCheckUp [adrian.pastor [at] procheckup.com]

ProCheckUp thanks Tincan for fixing this vulnerability so promptly.


References:

http://tincan.co.uk/webbler
http://tincan.co.uk/?lid=1975
http://www.procheckup.com/Vulner_2007.php


Fix:

This issue has been fixed on version version 3.1.6.


Legal:

Copyright 2007 ProCheckUp Ltd. All rights reserved.

Permission is granted for copying and circulating this Bulletin to the Internet community for the purpose of alerting them to problems, if and only if the Bulletin is not changed or edited in any way, is attributed to ProCheckUp indicating this web page URL, and provided such reproduction and/or distribution is performed for non-commercial purposes.

Any other use of this information is prohibited. ProCheckUp is not liable for any misuse of this information by any third party.
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