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Date: Wed, 17 Dec 2008 18:57:27 +0100
From: Steffen Joeris <>
Cc: Nico Golde <>,
 "Steven M. Christey" <>
Subject: Re: CVE id request: php-xajax

On Wed, 17 Dec 2008 06:19:20 pm Nico Golde wrote:
> Hi,
> * Steven M. Christey <> [2008-12-17 17:53]:
> > On Wed, 17 Dec 2008, Steffen Joeris wrote:
> > > The patch for CVE-2007-2739 seems incomplete as it doesn't escape "&".
> > > I recommend removing the replace call and using htmlspecialchars()
> > > instead.
> >
> > This counts for a new CVE, so use CVE-2008-5623
> >
> > Will there be more details available, or should I just write the
> > description up based on the oss-security post?  Which versions are
> > affected?
> Please enlighten me why it is incomplete. As far as I know
> you can't perform an XSS with & only (I'm not a webappsec
> expert though). But the reason it behaves different from
> htmlspecialchars should not make this patch incomplete.
Afaik you can use & to specify values like ../foo.php&value=bar
Thus the patch looked incomplete to me and should be extended to escape & as 


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