Date: Sat, 29 Nov 2008 00:48:47 +0100 From: Steffen Joeris <steffen.joeris@...lelinux.de> To: Jeremias Reith <jr@...ss.org> Cc: oss-security@...ts.openwall.com Subject: Re: CVE requset: WordPress XSS vulnerability in RSS Feed Generator Hi Jeremias On Fri, 28 Nov 2008 11:31:05 pm Jeremias Reith wrote: > On Nov 28, 2008, at 22:39 , Steffen Joeris wrote: > > Hi > > > >> a XSS vulnerability has been discovered in WordPress. > >> > >> Vendor info: > >> http://wordpress.org/development/2008/11/wordpress-265/ > >> > >> Detailed information: > >> http://www.securityfocus.com/archive/1/498652 (Note: It should be > >> "prior to 2.6.5" in the summary) > > > > I might be off here, but doesn't the patch create another XSS by > > removing > > wp_specialchars? > > > > Cheers > > Steffen > > > > : > > http://trac.wordpress.org/changeset?old_path=tags%2F2.6.3&old=&new_path=t > >ags%2F2.6.5&new= > > Looks fine to me. > > You probably missed that the added clean_url() is applied on the > entire URL instead of wp_specialchars() to REQUSET_URI. Yeah you're right and it appears that clean_url takes care of all the bad characters. However, I am still wondering why upstream doesn't use htmlspecialchars(). :) Cheers Steffen Download attachment "signature.asc " of type "application/pgp-signature" (198 bytes)
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