bugtraq - PR09-19: Cross-Site Scripting (XSS) on CommonSpot server

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Message-ID: <4B61A867.2010709@procheckup.com>
Date: Thu, 28 Jan 2010 15:08:23 +0000
From: research <research@...checkup.com>
To: <full-disclosure@...ts.grok.org.uk>
Cc: <bugtraq@...urityfocus.com>
Subject: PR09-19: Cross-Site Scripting (XSS) on CommonSpot server

PR09-19: Cross-Site Scripting (XSS) on CommonSpot server

Vulnerability found: 17th December 2009

Vendor informed: 18th December 2009

Severity: Medium

Successfully tested on: Commonspot server

http://www.paperthin.com/

Description:

Commonspot server is vulnerable to a vanilla XSS

Vulnerable server-side script: 'commonspot/utilities/longproc.cfm'

Unfiltered parameter: 'arbitrary'

Notes:

Simple XSS Proof of Concept (PoC) URL:

https://target-domain.foo/commonspot/utilities/longproc.cfm?onlyurlvars=1&url=%27;--%3E%3C/script%3E%3Cscript%3Ealert%281%29%3C/script%3E

Consequences:

An attacker may be able to cause execution of malicious scripting code
in the browser of a victim user who clicks on a link to a CommonSpot server.

This type of attack can result in non-persistent defacement of the
target site, or the redirection of confidential information (i.e.:
session IDs or passwords) to unauthorised third parties.

Credits: found by Richard Brain & Jan Fry  - ProCheckUp Ltd
(www.procheckup.com).

Legal:

Copyright 2009 Procheckup Ltd. All rights reserved.

Permission is granted for copying and circulating this Bulletin to the
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