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Cross-Site Scripting (XSS) in Twilight CMS

Advisory ID:HTB23166
Product:Twilight CMS
Vendor:Strata Technologies LLC
Vulnerable Versions:5.17 and probably prior
Tested Version:5.17
Advisory Publication:July 24, 2013 [without technical details]
Vendor Notification:July 24, 2013
Vendor Fix:August 15, 2013
Public Disclosure:August 21, 2013
Latest Update:August 17, 2013
Vulnerability Type:Cross-Site Scripting [CWE-79]
CVE Reference:CVE-2013-4899
Risk Level:Medium
CVSSv2 Base Score:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

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

1) Cross-Site Scripting (XSS) in Twilight CMS: CVE-2013-4899
The vulnerability exists due to insufficient filtration of user-supplied data appended to "/gallery/" URL. 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.
The exploitation example below uses JavaScript "alert()" function to display user's cookies:
http://[host]/gallery//%f6%22%20onmouseover%3dalert%28document.cookie%29%20/ /

How to Detect Cross-Site Scripting Vulnerabilities
Website Security Test
  • GDPR & PCI DSS Test
  • Website CMS Security Test
  • CSP & HTTP Headers Check
  • WordPress & Drupal Scanning
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Solution:
The only version of Twilight CMS publicly available for download on the 24th of July (Vendor notification date) was 5.17.

Vendor didn't reply to 12 notifications, however silently patched the vulnerability in version 5.24, which is now available for download on www.twl.ru (Russian version of Vendor website).

Update to version 5.24.


References:
[1] High-Tech Bridge Advisory HTB23166 - https://www.immuniweb.com/advisory/HTB23166 - Cross-Site Scripting (XSS) in Twilight CMS.
[2] Twilight CMS - http://www.twilightcms.com/ - Twilight CMS is a convenient 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.

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