CM3 AcoraCMS XSS / CSRF / Redirection / Disclosure

` ===============================  
- Advisory -  
===============================  
  
Tittle: CM3 AcoraCMS - Several Vulnerabilities   
Risk: Medium  
Date: 12.Sept.2012  
Author: Pedro Andujar  
Twitter: @pandujar  
  
  
.: [ INTRO ] :.  
  
Acora CMS is a sleek and powerful off-the-shelf content management application coupled with a deep and extensible advanced website development framework at a killer price. This home grown product is one of DDSN's key differentiators. It's in use by many high profile clients, but easily scales down for smaller websites too.   
  
AcoraCMS is widely used accross Austalian IT companies, Banks and government websites.  
  
  
.: [ TECHNICAL DESCRIPTION ] :.  
  
AcoraCMS, v6.0.6/1a, v6.0.2/1a, v5.5.7/12b, v5.5.0/1b-p1 (and probably others), are prone to several security issues as described below;  
  
  
.: [ ISSUE #1 }:.  
  
Name: Reflected Cross Site Scripting  
Severity: Medium   
CVE: CVE-2013-4722  
  
Due to lack of input validation and output escaping in the default.asp page,  
parameters such username, url, qstr, etc. can be used by an attacker to perform XSS  
attacks.  
  
Example:  
  
/AcoraCMS/Admin/login/default.asp?username="</div><script>alert(document.cookie)</script>  
  
/AcoraCMS/Admin/login/default.asp?url="</form><META HTTP-EQUIV=Refresh CONTENT="0; URL=http://www.google.es">  
  
  
.: [ ISSUE #2 }:.  
  
Name: URL Redirect  
Severity Medium  
CVE: CVE-2013-4723  
  
URL redirection functionality doesn't verify that VirtualPath are relatives.  
  
Example:  
  
/AcoraCMS/track.aspx?m=1&l=//www.google.es  
  
  
.: [ ISSUE #3 }:.  
  
Name: Username and password sent in clear text  
Severity: Medium  
  
Authentication credentials (username and password) and session cookies are unencrypted.  
  
  
.: [ ISSUE #4 }:.  
  
Name: Cookie Lack of Hardening  
Severity: Low  
CVE: CVE-2013-4724 & CVE-2013-4725  
  
Cookies are not hardened using HttpOnly or Secure flags.  
  
  
.: [ ISSUE #5 }:.  
  
Name: XSRF  
Severity: Low  
CVE: CVE-2013-4726  
  
The application lacks controls to prevent Cross Site Request Forgery.   
  
  
.: [ ISSUE #6 }:.  
  
Name: Information Leaks  
Severity: Low  
CVE: CVE-2013-4727 & CVE-2013-4728  
  
* Unauthenticated users are able to retrive _viewstate encoded base64 information.  
  
/AcoraCMS/Admin/top.aspx  
  
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE"  
value="/wEPDwUKLTQ4NjIxMDUxOQ9kFgJmD2QWAgIDD2QWAgIBD2QWCmYPFgIeBFRleHQFJERpZ2l0YWxTZWMgTmV0d29ya3MgV2Vic2l0ZWQCAQ8WAh8ABQpFbnRlcnByaXNlZAICDw8WAh8ABQt2NS40LjUvNGEtY2RkAgMPFgIfAAUgQW5vbnltb3VzIChQdWJsaWMgSW50ZXJuZXQgVXNlcilkAgQPDxYCHgdWaXNpYmxlaGRkZIL9u8OSlqqnBHGwtssOBV5lciAoCg"  
/>  
</div>  
  
Once decoded gives you information about the version and license including the company who owns the license, it   
could be used for fingerprinting the application:  
  
-486210519 d f d d d  
f Text $DigitalSec Networks Websited   
Enterprised v5.4.5/4a-cdd Anonymous (Public Internet  
User)d VisiblehdddÒq ^er (  
  
  
* Application Physical Path exposed to unauthenticated users  
  
/AcoraCMS/track.aspx?m=1&l=..\..  
  
Exception Details: System.Web.HttpException: Cannot use a leading ..  
to exit above the top directory.  
Source File: d:\Path\to\site\AcoraCMS\track.aspx.cs Line: 57  
  
  
  
.: [ CHANGELOG ] :.  
  
* 12/Sep/2012: - Vulnerability discovered.  
* 27/May/2013: - Vendor contacted. No response  
* 19/Aug/2013: - Vendor recontacted. No response  
* 26/Aug/2013: - Public  
  
.: [ SOLUTIONS ] :.  
  
N/A  
  
  
  
  
.: [ REFERENCES ] :.  
  
[+] Acora CMS   
http://www.ddsn.com/knowledge-base/cm3-acora-cms.aspx  
  
[+] Clients & Projects  
http://www.ddsn.com/portfolio/clients.aspx  
  
[+] CM3CMS  
http://www.cm3cms.com/  
  
[+] !dSR - Digital Security Research  
http://www.digitalsec.net/  
  
  
  
  
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