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PR09-19: Cross-Site Scripting (XSS) on CommonSpot server
From: research <research () procheckup com>
Date: Thu, 28 Jan 2010 15:08:23 +0000

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



Commonspot server is vulnerable to a vanilla XSS

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

Unfiltered parameter: 'arbitrary'


Simple XSS Proof of Concept (PoC) URL:



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


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