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Cross-site Scripting (XSS) Vulnerability in FanUpdate

Advisory ID:HTB23017
Product:FanUpdate
Vendor:fanupdate.co.uk
Vulnerable Versions:3.0 and probably prior
Tested Version:3.0
Advisory Publication:June 1, 2011 [without technical details]
Vendor Notification:June 1, 2011
Public Disclosure:June 22, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
Risk Level:Medium
CVSSv2 Base Score:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in FanUpdate which could be exploited to perform cross-site scripting attacks.

1) Cross-site scripting (XSS) vulnerability in FanUpdate
The vulnerability exists due to input sanitation error in the "pageTitle" parameter in header.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Successful exploitation of the vulnerability requires that "register_globals" is enabled.

Exploitation example:
http://fanupdate/header.php?pageTitle=%3C/title%3E%3Cscript%3Ealert%28123%29 ;%3C/script%3E

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:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB23017 - https://www.immuniweb.com/advisory/HTB23017 - Cross-site Scripting (XSS) Vulnerability in FanUpdate
[2] FanUpdate - fanupdate.co.uk - FanUpdate is a light-weight blogging script.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Have additional information to submit?
Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.
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