BBSXP 2008 - ShowPost.asp Cross-Site Scripting

2010-03-04T00:00:00
ID EXPLOITPACK:4F804BE554DA3AF1A8DF063AD4558B6B
Type exploitpack
Reporter Liscker
Modified 2010-03-04T00:00:00

Description

BBSXP 2008 - ShowPost.asp Cross-Site Scripting

                                        
                                            source: https://www.securityfocus.com/bid/38542/info

BBSXP is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks.

BBSXP 2008 is vulnerable; other versions may also be affected.

Home Page : http://www.bbsxp.com/


i found a xss on "ThreadID" parameter in "ShowPost.asp" in BBSXP 2008 , it's "ShowPost.asp?ThreadID="

for example:
http://www.example.com/ShowPost.asp?ThreadID=1"><script>alert(/Liscker/);</script>

We shouldnt encode the script, or, the xss will fail.




Liscker

2010.3.4