Ilch CMS 2.0 - Persistent XSS Vulnerability

Product: Ilch CMS
Vendor: http://ilch.de
Vulnerable Version(s): 2.0 and probably prior
Tested Version: 2.0
Advisory Publication: February 12, 2014 [without technical details]
Vendor Notification: February 12, 2014
Public Disclosure: March 5, 2014
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-1944
Risk Level: Medium
CVSSv2 Base Score: 5 (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ )
 
------------------------------------------------------------------------
-----------------------
 
Advisory Details:
 
High-Tech Bridge Security Research Lab discovered vulnerability in Ilch CMS, which can be exploited to perform Cross-Site Scripting (XSS) attacks against users and administrators of vulnerable application.
 
1) Cross-Site Scripting (XSS) in Ilch CMS: CVE-2014-1944
 
The vulnerability exists due to insufficient sanitisation of user-supplied data in "text" HTTP POST parameter passed to "/index.php/guestbook/index/newentry" URL. A remote unauthenticated user can send a specially crafted HTTP POST request, which allows to permanently inject and execute arbitrary HTML and script code in userâ??s browser in context of the vulnerable website when the victim visits the "http://[host]/index.php/guestbook/index/index" URL.
 
The exploitation example below uses the JavaScript "alert()" function to display "immuniweb" word:
 
POST /index.php/guestbook/index/newentry HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Content-Length: 151
 
ilch_token=5a528778359d4756b9b8803b48fba18b&name=name&email=email%40emai
l.com&homepage=http%3A%2F%2Fsite.com&text=<script>alert('immuniwweb');</
script>&saveEntry=Submit
 
------------------------------------------------------------------------
-----------------------
 
Solution:
 
Fixed by vendor on February 18, 2014 directly in the source code without version modification/new release. Update to the version 2.0 released after February 18, 2014.
 
More Information:
https://github.com/IlchCMS/Ilch-2.0/commit/381e15f39d07d3cdf6aaaa25c0f23
21f817935f7
https://github.com/IlchCMS/Ilch-2.0/commit/02bb4953c0e21cb8f20e5e91db5e1
5a77fe1a5ce

#  0day.today [2018-01-08]  #