Reflected Cross-Site Scripting (XSS) in BlackCat CMS

[High-Tech Bridge Security Research <advisory@xxxxxxxxxxxx>]

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.