Includes a link like the following, and induce the user to click on the In the page’s content without escaping the value) the attacker couldĬreate a web page at, which the attacker controls, that (which prints the value of the “q” query parameter from the page’s URL To exploit the same Cross Site Scripting as above at Window, so the browser user will be aware that they are visitingĮ. The browser’s address bar, and the page in the browser’s When using a redirect to navigateĭirectly to, the browser will display the url in The frame off-screen – so the browser user won’t have any idea that they The only difference is that when using an iframe, the attacker can hide Request to (the iframe’s src URL is wrapped for legibility): Some JavaScript into the page which steals theīrowser-user’s cookie, and sends the cookie via a fake-image The value of the “q” query parameter from the page’s URL in the page’sĬontent without escaping the value. Iframe loads the flawed page, and injects some script into To exploit a Cross Site Scripting on a third-party web page atĮ, the attacker could create a web page at, which theĪttacker controls, and include a hidden iframe in the page. onkeypress = function () XSS Attack Using Frames array of user keystrokes var keystrokes = // event listener which captures user keystrokes document. The frame, while trying to log into, can beĬaptured by the attacker, and reported back to : So every key press the browser user makes in The browser bug, this listener is notified also of events from theįramed page. Notified of events only from the main page – but because of The attacker can hide the frame’s borders andĮxpand the frame to cover the entire page, so that it looks to theīrowser user like they are actually visiting TheĪttacker registers some JavaScript in the main page which To exploit the IE bug which leaks keyboard events across framesets, anĪttacker may create a web page at, which the attacker controls,Īnd include on the page a visible frame displaying the login This bug could allow, for example, an attacker to steal the loginĬredentials of a browser user as they try to type them into the Which leaks keyboard events across HTML framesets (see iDefense LabsĪdvisory Microsoft Internet Explorer Cross Frame Scripting Restriction However, specific bugs in this security model exist in specificīrowsers, allowing an attacker to access some data in pages loaded fromĭifferent servers or domains. That have been loaded from different servers or domains (see MSDN #Foundation framer tutorial windowsTo access the content of other pages that have been loaded in differentīrowser windows or frames as long as those other pages have been loadedįrom the same-origin server or domain. The standard browser security model allows JavaScript from one web page Once the user entersĬredentials into the legitimate site within the iframe, the malicious The attacker’s page then loads malicious JavaScriptĪnd an HTML iframe pointing to a legitimate site. An example wouldĬonsist of an attacker convincing the user to navigate to a web page theĪttacker controls. Successful when combined with social engineering. JavaScript with an iframe that loads a legitimate page in an effort to Contributor(s): KristenS, Michael Brooks, Andrew Smith, kingthorinĬross-Frame Scripting (XFS) is an attack that combines malicious
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