Various XSS within BlogCFC
- Vulnerability found:
- 02 May 2010
- Vendor informed:
- 03 May 2010
- Severity level:
- Richard Brain of ProCheckUp Ltd (www.procheckup.com)
- BlogCFC is a ColdFusion based blogging System.Procheckup has discovered that Various BlogCFC programs are vulnerable to generic reflective Cross Site Scripting (XSS) attacks.
Note: BlogCFC was tested on a fully patched Windows XP machine, ColdFusion 8 (unpatched) and SQL 2005 were used from the application server and the backend database.
Note: Coldfusion 9 includes a application firewall and will replace any <script> tag, To circumvent this the
<script>alert(1)</script> needs to be substituted with a tag not on the match list like </XSS/*-*/STYLE=xss:e/**/xpression(window.location="http://www.procheckup.com/")> (this works on IE7 & IE6)
BlogCFC Versions tested
- Proof of concept:
- Unauthenticated vanilla XSS. IE7 (Internet Explorer) browser used.
The following works due to the error page not sufficiently filtering tags on unpatched Coldfusion 8
The following examples the Mouse has to be moved over the subscribe input box
- How to fix:
- Apply the latest patched version.
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