Reporter High-Tech Bridge SA
`Vulnerability ID: HTB23036
Product: Fast Secure Contact Form wordpress plugin
Vendor: Mike Challis ( http://www.fastsecurecontactform.com )
Vulnerable Version: 126.96.36.199 and probably prior
Tested on: 188.8.131.52
Vendor Notification: 27 July 2011
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
Risk level: Medium
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )
High-Tech Bridge SA Security Research Lab has discovered vulnerability in Fast Secure Contact Form wordpress plugin, which can be exploited to perform cross-site scripting attacks.
Input appended to the URL after /wp-content/plugins/si-contact-form/captcha/test/index.php is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website.
The following PoC code is available:
Solution: Upgrade to the most recent version