WHMCS Cross Site Scripting and Multiple HTTP Parameter Pollution Vulnerabilities

Bugtraq ID:	53740
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	May 31 2012 12:00AM
Updated:	May 31 2012 12:00AM
Credit:	Shadman Tanjim
Vulnerable:	WHMCS WHMCS 5.0
Not Vulnerable:

WHMCS Cross Site Scripting and Multiple HTTP Parameter Pollution Vulnerabilities

WHMCS is prone to a cross-site scripting vulnerability and multiple HTML-parameter-pollution vulnerabilities because it fails to properly sanitize user-supplied input.

Attacker-supplied HTML and script code would run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials, control how the page is rendered to the user, and override existing hard-coded HTTP parameters which compromises the application.

WHMCS 5.0 is vulnerable; other versions may also be affected.

WHMCS Cross Site Scripting and Multiple HTTP Parameter Pollution Vulnerabilities

Attackers can use a browser to exploit these issues.

The following example URIs are available:

http://www.example.com/knowledgebase.php?action = [XSS]

http://www.example.com/cart.php?a=add&domain=transfer&n913620=v992636

http://www.example.com/domainchecker.php?search=bulkregister&n946774=v992350

http://www.example.com/cart.php?currency=2&gid=1&n972751=v976696

WHMCS Cross Site Scripting and Multiple HTTP Parameter Pollution Vulnerabilities

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

WHMCS Cross Site Scripting and Multiple HTTP Parameter Pollution Vulnerabilities

References:

• WHMCS Homepage (WHMCS )