MyBB kingchat Plugin 'kingchat.php' Script HTML Injection Vulnerability

Bugtraq ID:	56863
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Dec 09 2012 12:00AM
Updated:	Dec 09 2012 12:00AM
Credit:	VipVince
Vulnerable:	MyBB kingchat 0
Not Vulnerable:

MyBB kingchat Plugin 'kingchat.php' Script HTML Injection Vulnerability

The kingchat plugin for MyBB is prone to an HTML-injection vulnerability because it fails to properly sanitize user-supplied input.

Attacker-supplied HTML or JavaScript code could run in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials and to control how the site is rendered to the user; other attacks are also possible.

MyBB kingchat Plugin 'kingchat.php' Script HTML Injection Vulnerability

Attackers can exploit this issue by enticing an unsuspecting user to follow a malicious URI.

The following example URI is available:

http://www.example.com/kingchat.php?chat=2&l=2

MyBB kingchat Plugin 'kingchat.php' Script HTML Injection Vulnerability

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

MyBB kingchat Plugin 'kingchat.php' Script HTML Injection Vulnerability

References:

• kingchat Homepage (MyBB)
  
• MyBB Homepage (MyBB)