OSEC

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Re: Web 2.0 backdoors made easy with MSIE & XMLHttpRequest

From: Michal Zalewski (lcamtufdione.ids.pl)
Date: Sat Feb 03 2007 - 15:34:02 CST


On Sat, 3 Feb 2007, Michal Zalewski wrote:

> xmlhttp.open("GET\thttp://dione.ids.pl/\tHTTP/1.0\n\n", "x",true);

Funny enough, Paul Szabo was quick to point out that Amit Klein found the
same vector that I used here for client-side backdoors in May 2006 (still
not patched?! *shrieks in horror*), but for cache poisoning:

  "IE + some popular forward proxy servers = XSS, defacement (browser cache poisoning)"
  http://www.securityfocus.com/archive/1/434931

This is getting depressing. May 2006.

/mz