Test XSS for jQuery

By
JonathanLetham 0 Seen 590 times
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User Script (TESTHARNESS)

					
// Custom Functions
var jQuery_version = '';
function vulnerable(){
    addError('jQuery '+ jQuery_version, '<b>Vulnerable</b>');
}

function safe(){
    addSuccess('jQuery '+ jQuery_version, 'Safe');
}
    
function removeIframe(){
    var x = document.getElementById('jQueryFrameID');
    x.parentNode.removeChild(x);
}

// Test Function
function test(data){
	// We need to separate properties and access one by one.
try{
    jQuery_version = data;
    var jQueryFrame = document.createElement('iframe');
    jQueryFrame.id = 'jQueryFrameID';
    jQueryFrame.onload = function(){
            var jQueryScript = jQueryFrame.contentWindow.document.createElement('script');
            jQueryScript.type = 'text/javascript';
            jQueryScript.src = 'https://ajax.googleapis.com/ajax/libs/jquery/'+ data.toString() +'/jquery.js';
            jQueryFrame.contentWindow.document.body.appendChild(jQueryScript);
            jQueryScript.onload = function(){
                var exploitScript = "try{function bad(){parent.vulnerable(); parent.removeIframe();} $('. <img src=x onerror=bad();>');} catch(err){parent.safe();parent.removeIframe();}";
                var exploit = jQueryFrame.contentWindow.document.createElement('script');
                exploit.type = 'text/javascript';
                exploit.innerHTML = exploitScript;
                jQueryFrame.contentWindow.document.body.appendChild(exploit);
                
            };
            jQueryScript.onerror = function(){
                addResult(data ,  'Some Error Occured');
            }
    };
    document.body.appendChild(jQueryFrame);

}

catch(err){
	addInfo(data ,  'Some Error Occured');
}

}