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Reflected Cross-Site Scripting (XSS) in BlackCat CMS

Advisory ID:HTB23228
Product:BlackCat CMS
Vendor:Black Cat Development
Vulnerable Versions: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 Fix: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

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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Apply vendor's patch:

[1] High-Tech Bridge Advisory HTB23228 - - Reflected Cross-Site Scripting (XSS) in BlackCat CMS.
[2] BlackCat CMS - - BlackCat CMS ist ein einfach zu bedienendes, übersichtliches und vielseitig einsetzbares Content Management System.
[3] Common Vulnerabilities and Exposures (CVE) - - 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) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® - Leveraging the power of machine-learning and genius of human brain to deliver the most advanced web application security and penetration testing.
[6] ImmuniWeb® SSLScan - Test your servers for security and compliance with PCI DSS, HIPAA and NIST.
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