EV0019.txt

`New eVuln Advisory:  
NavBoard BBcode XSS Vulnerability  
  
--------------------Summary----------------  
Vendor: NavBoard  
Vendor's Web Site: http://navarone.f2o.org/  
Software: NavBoard  
Sowtware's Web Site: http://sourceforge.net/projects/navboard/  
Versions: checked: V16 Stable(2.6.0) and V17beta2  
Critical Level: Moderate  
Type: Cross-Site Scripting  
Class: Remote  
Status: Unpatched  
Exploit: Available  
Solution: Available  
Discovered by: Aliaksandr Hartsuyeu (eVuln.com)  
Published: 2006.01.07  
eVuln ID: EV0019  
  
-----------------Description--------------  
Arbitrary script code insertion is possible in BBcode.  
  
Vulnerable Script: post.php  
BBcode isn't properly sanitized. This can be used to post arbitrary script code which will be executed in the browser of every visitor.  
  
Administrator's cookie-based authentication is threatened.  
Login and plain text Password are stored in Cookies.  
Administrator can modify PHP Code from Administrator's panel.  
  
  
--------------Exploit---------------------  
BBcode Examples:  
  
For V16(2.6.0)  
[b]<XSS>[/b]  
[textlarge]<XSS>[/textlarge]  
  
For V16(2.6.0) and V17beta2  
[url=javascript:alert(123)]title[/url]  
  
  
--------------Solution---------------------  
No vendor-provided patch availabve.  
  
Solution: disable BBcode  
  
--------------Credit---------------------  
Original Advisory:  
http://evuln.com/vulns/19/summary.html  
  
Discovered by: Aliaksandr Hartsuyeu (eVuln.com)  
`