Reflected Cross-Site Scripting (XSS) in BlackCat CMS

[High-Tech Bridge Security Research <advisory () htbridge com>]

Advisory ID: HTB23228
Product: BlackCat CMS
Vendor: Black Cat Development
Vulnerable Version(s): 1.0.3 and probably prior
Tested Version: 1.0.3
Advisory Publication:  August 13, 2014  [without technical details]
Vendor Notification: August 13, 2014 
Vendor Patch: August 13, 2014 
Public Disclosure: September 3, 2014 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-5259
Risk Level: Medium 
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Solution Available
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ ) 

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Advisory Details:

High-Tech Bridge Security Research Lab discovered vulnerability in BlackCat CMS, which can be exploited to perform 
Cross-Site Scripting (XSS) attacks.


1) Reflected Cross-Site Scripting (XSS) in BlackCat CMS: CVE-2014-5259

The vulnerability exists due to insufficient sanitization of the "msg" HTTP GET parameter passed to 
"/modules/lib_jquery/plugins/cattranslate/cattranslate.php" script. A remote attacker can trick a logged-in user to 
open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable 
website. Successful exploitation of the vulnerability may allow an attacker to steal sensitive information, alter 
website pages and perform phishing attacks.

The exploitation example below uses the "alert()" JavaScript function to display "immuniweb" word:

http://[host]/modules/lib_jquery/plugins/cattranslate/cattranslate.php?msg=%3Cscript%3Ealert%28/immuniweb/%29;%3C/script%3E

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Solution:

Apply vendor's patch:
http://forum.blackcat-cms.org/viewtopic.php?f=2&t=263

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References:

[1] High-Tech Bridge Advisory HTB23228 - https://www.htbridge.com/advisory/HTB23228 - Reflected Cross-Site Scripting 
(XSS) in BlackCat CMS.
[2] BlackCat CMS - http://blackcat-cms.org/ - BlackCat CMS ist ein einfach zu bedienendes, übersichtliches und 
vielseitig einsetzbares Content Management System.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public 
use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE 
is a formal list of software weakness types.
[5] ImmuniWeb® SaaS - https://www.htbridge.com/immuniweb/ - hybrid of manual web application penetration test and 
cutting-edge vulnerability scanner available online via a Software-as-a-Service (SaaS) model.

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Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details 
of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the 
Advisory is available on web page [1] in the References.