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Date: Fri, 13 Jan 2012 19:08:19 +0100
From: Nicolas Grégoire <nicolas.gregoire@...rri.fr>
To: oss-security@...ts.openwall.com
Subject: Re: CVE affected for PHP 5.3.9 ?

Le vendredi 13 janvier 2012 à 09:54 -0700, Kurt Seifried a écrit :
> I'm not clear on how this crosses a security boundary

Some applications *will* process untrusted XSLT stylesheets.

The most basic example is online XSLT gateways :
http://www.shell-tools.net/index.php?op=xslt
http://online-toolz.com/tools/xslt-transformation.php

You may find more with Google and a dork like [inurl:php
inurl:"xsl=http"]. This is often used to adapt the layout of a page to
the browser (desktop vs. mobile).

There's too some more complex cases where untrusted XSLT may be used,
like parsing SVG images, XML-DSig signatures or SAML tokens, ...

Regards,
Nicolas


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