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Date: Mon, 19 Feb 2007 22:23:29 +0100 From: "Martin Johns" <martin.johns@...il.com> To: "auto400208@...hmail.com" <auto400208@...hmail.com>, bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk Subject: Re: Drive-by Pharming Threat On 2/19/07, auto400208@...hmail.com < auto400208@...hmail.com> wrote: > I am curious as to how one "automatically" logs on? There are several potential methods (depending on the victim's browser): 1) Older versions of Flash allow the spoofing of arbitrary http headers [1] thus allowing the creation of attacker controlled Authorization-headers. 2) Firefox does not display http-authentication warnings if the http request was generated by the browser's link-prefetch mechanism [2]. 3) An anti-DNS-pinning attack [3] can be executed to break the same-origin policy. Then the low-level socket functions of either Flash (all browsers) [4] or Java (Firefox and Opera) [5] could be employed to create arbitrary http requests. [1] http://www.securityfocus.com/archive/1/441014/30/0/threaded [2] http://blog.php-security.org/archives/56-Bruteforcing-HTTP-Auth-in-Firefox-with-JavaScript.html [3] http://shampoo.antville.org/stories/1451301/ [4] http://www.jumperz.net/index.php?i=2&a=1&b=8 [5] http://shampoo.antville.org/stories/1566124/ -- Martin Johns http://shampoo.antville.org _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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