appRain 0.1.3 / 0.1.4-Alpha Cross Site Scripting

`##############################################################################  
  
Title : appRain Quick Start Edition Core Edition Multiple Persistence  
Cross-Site Scripting Vulnerabilities.  
Author : Antu Sanadi from SecPod Technologies (www.secpod.com)  
Vendor : http://www.apprain.com/  
Advisory : http://secpod.org/blog/?p=215  
http://secpod.org/advisories/SECPOD_AppRain_Multiple_XSS.txt  
Version : appRain 0.1.4-Alpha and appRain-d-0.1.3  
Date : 08/07/2011  
  
###############################################################################  
  
SecPod ID: 1015 01/05/2011 Issue Discovered  
04/05/2011 Vendor Notified  
No Response from the Vendor  
08/07/2011 Advisory Released  
  
  
Class: Cross-Site Scripting (Persistence) Severity: Medium  
  
  
Overview:  
---------  
appRain 0.1.4-Alpha(Quick Start Edition) and appRain-d-0.1.3 (Core Edition)  
multiple Persistence Cross-Site Scripting vulnerabilities.  
  
  
Technical Description:  
----------------------  
i) appRain 0.1.4-Alpha(Quick Start Edition) and appRain-d-0.1.3 (Core Edition) are  
prone to multiple persistence cross-site scripting vulnerabilities as it fails  
to properly sanitise user-supplied input.  
  
Input passed via the 'ss' parameter in 'search' action is not properly verified  
before it is returned to the user. This can be exploited to execute arbitrary  
HTML and script code in a user's browser session in the context of a vulnerable  
site. This may allow an attacker to steal cookie-based authentication  
credentials and launch further attacks.  
  
  
ii) Input passed via the 'data[sconfig][site_title]' parameter in '/admin/config/general'  
action is not properly verified before it is returned to the user. This can be  
exploited to execute arbitrary HTML and script code in a user's browser session  
in the context of a vulnerable site. This may allow an authinticated attacker to  
launch further attacks.  
  
NOTE: Authentication is required to exploit this vulnerability.  
  
The vulnerability has been tested in appRain 0.1.4-Alpha (Quick Start Edition),  
appRain-q-0.1.3 (Quick Start Edition), appRain-q-0.1.1 (Quick Start Edition),  
appRain-d-0.1.3 (Core Edition) and appRain-d-0.1.2 (Core Edition) ,Other versions  
may also be affected.  
  
  
Impact:  
--------  
Successful exploitation could allow an attacker to execute arbitrary HTML  
code in a user's browser session in the context of a vulnerable application.  
  
  
Affected Software:  
------------------  
i) appRain 0.1.4-Alpha (Quick Start Edition) and prior.  
  
ii)appRain-d-0.1.3 (Core Edition) and prior.  
appRain 0.1.4-Alpha (Quick Start Edition) and prior.  
  
Tested on,  
ppRain 0.1.4-Alpha (Quick Start Edition),  
appRain-q-0.1.3 (Quick Start Edition),  
appRain-q-0.1.1 (Quick Start Edition),  
appRain-d-0.1.3 (Core Edition) and  
appRain-d-0.1.2 (Core Edition)  
  
  
References:  
-----------  
http://www.apprain.com/  
http://secpod.org/blog/?p=215  
http://secpod.org/advisories/SECPOD_AppRain_Multiple_XSS.txt  
  
  
Proof of Concept:  
-----------------  
  
POC 1:  
-----  
POST appRainq/search HTTP/1.1  
  
Host: 192.168.1.17  
User-Agent: appRain XSS test  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 62  
  
Post Data:  
----------  
ss=</title><script>alert('SECPOD-XSS-TEST')</script>  
  
  
POC 2:  
-----  
NOTE: Authentication is required to exploit this vulnerability.  
  
POST appRainq/admin/config/general HTTP/1.1  
  
Host: 192.168.1.17  
User-Agent: appRain XSS test  
Content-Type: application/x-www-form-urlencoded  
Content-Length:359  
  
Post Data:  
----------  
data[sconfig][site_title]=<script>alert('SECPOD-XSS-TEST')</script>&data[sconfig][admin_title]=Lipsum&data[sconfig][site_logo_1]=logo.gif&data[sconfig][site_logo_2]=apprain-logo-yellow.gif&data[sconfig][copy_right_text]=xyz&data[sconfig][admin_email][email protected]<script type="text/javascript">  
/* <![CDATA[ */  
(function(){try{var s,a,i,j,r,c,l=document.getElementById("__cf_email__");a=l.className;if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();  
/* ]]> */  
</script>&data[sconfig][support_email][email protected]<script type="text/javascript">  
/* <![CDATA[ */  
(function(){try{var s,a,i,j,r,c,l=document.getElementById("__cf_email__");a=l.className;if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();  
/* ]]> */  
</script>&data[sconfig][corporate_email][email protected]<script type="text/javascript">  
/* <![CDATA[ */  
(function(){try{var s,a,i,j,r,c,l=document.getElementById("__cf_email__");a=l.className;if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();  
/* ]]> */  
</script>&Button[button_save]=Save  
  
  
Solution:  
----------  
Fix not available  
  
  
Risk Factor:  
-------------  
CVSS Score Report:  
ACCESS_VECTOR = NETWORK  
ACCESS_COMPLEXITY = MEDIUM  
AUTHENTICATION = REQUIRE  
CONFIDENTIALITY_IMPACT = PARTIAL  
INTEGRITY_IMPACT = PARTIAL  
AVAILABILITY_IMPACT = NONE  
EXPLOITABILITY = PROOF_OF_CONCEPT  
REMEDIATION_LEVEL = UNAVAILABLE  
REPORT_CONFIDENCE = CONFIRMED  
CVSS Base Score = 5.5 (MEDIUM) (AV:N/AC:M/Au:S/C:P/I:P/A:N)  
  
  
Credits:  
--------  
Antu Sanadi of SecPod Technologies has been credited with the discovery of this  
vulnerability.  
  
`