Chi Kien Uong Guestbook Cross-Site Scripting Vulnerability

Bugtraq ID:	8896
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Oct 27 2003 12:00AM
Updated:	Oct 27 2003 12:00AM
Credit:	The disclosure of this issue has been credited to Joshua P. Miller <[email protected]>.
Vulnerable:	Chi Kien Uong Guestbook 1.51
Not Vulnerable:

Chi Kien Uong Guestbook Cross-Site Scripting Vulnerability

It has been reported that Chi Kien Uong Guestbook may be prone to a cross-site scripting vulnerability that may allow a remote attacker to execute HTML or script code in a user's browser. The problem is reported to present itself due to insufficient sanitization of user-supplied data when posting an e-mail address or URL to the site. It has been reported that double quotes are not filtered therefore an attacker may be able to append malicious script code in order to be executed on a victim's web browser.

Successful exploitation of this attack may allow an attacker to steal cookie-based authentication information.

Chi Kien Uong Guestbook Cross-Site Scripting Vulnerability

The following proof of concept has been provided:

" onmouseover="alert(document.cookie)

Chi Kien Uong Guestbook Cross-Site Scripting Vulnerability

References:

• New Vulnerability ("Joshua P. Miller" )