full-disclosure - Re: New Web Vulnerability

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Message-ID: <032901c2c2f0$b4a92a00$858370d4@wks.jubii.dk>
From: thor at pivx.com (Thor Larholm)
Subject: Re: New Web Vulnerability - Cross-Site Tracing

> From: "H D Moore" <sflist@...italoffense.net>
> Although its definately an interesting way to compromise client-side
> headers, the root is the vulnerability is the XMLHTTP component's ability
> to act like a HTTP proxy. Client-side scripting components should only be
> allowed to interact with the site which served them up, otherwise you
> open a huge can of worms, where XSS and user-credential theft are only
> the squishy little ones on top.

Isn't it great then to realize that XMLHTTP, in fact, can only interact with
the site which served them - exactly as you desire?

The proxy features and XSS to arbitrary foreign sites examples that are
demonstrated in this 'whitepaper' are merely demonstrations of already
publicly known unpatched vulnerabilities in IE. They have nothing to do with
any of the findings presented.

http://jscript.dk/2003/1/sec/xst-reply.txt

Regards
Thor Larholm
PivX Solutions, LLC - Senior Security Researcher

Latest PivX research: Multi-vendor Game Server DDoS Vulnerability
http://www.pivx.com/press_releases/mk_mk001.html