oss-sec: Re: CVE request: Inkscape fixes a XXE vulnerability during rasterization of SVG images

[Kurt Seifried <kseifried () redhat com>]

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On 12/19/2012 03:37 AM, Jan Lieskovsky wrote:
> Hi Kurt, Nicolas, vendors,
>
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>
> On 12/18/2012 08:44 PM, Kurt Seifried wrote:
> > On 12/17/2012 01:27 PM, Nicolas Grégoire wrote:
> >
> > > Inkscape is vulnerable to XXE attacks during 
> > > rasterization/export of SVG images: 
> > > https://bugs.launchpad.net/inkscape/+bug/1025185
> > > Impact: The impact of this vulnerability range form denial of 
> > > service to file disclosure. Under Windows, it can also be used 
> > > to steal LM/NTLM hashes.
> > > PoC: During rasterization, entities declared in the DTD are 
> > > dereferenced and the content of the target file is included in 
> > > the output. Command-line used: "inkscape -e xxe-inkscape.png 
> > > xxe.svg" (PoC files are attached to the ticket)
> > > References: CWE-827: Improper Control of Document Type
> > > Definition http://cwe.mitre.org/data/definitions/827.html
> > > Regards, Nicolas Grégoire
> > This already has a CVE reference in the page:
> >
> > CVE References
> >
> > 2012-1102
> >
> > To clarify that CVE was assigned to 
> > http://seclists.org/oss-sec/2012/q1/549
> >
> > http://seclists.org/oss-sec/2012/q1/549
> >
> > so this is probably an error, someone needs to tidy that bug up
> > and post links to the source/etc so I can see whats going on.
> That's correct. CVE-2012-1102 has been assigned to the perl
> XML-Atom issue.
>
> Assuming the source of the slight confusion is this comment: 
> https://bugs.launchpad.net/inkscape/+bug/1025185/comments/13
>
> and the CVE id in the references.
>
> But from the context of that bug, comment c#13 was used just to
> reference patch for same issue in perl XML-Atom (CVE-2012-1102) 
> issue, when searching a patch for inkscape.
>
> Which later resulted into upstream inkscape commit: 
> http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/11931
>
>  referenced in (subsequent) comment c#14: 
> https://bugs.launchpad.net/inkscape/+bug/1025185/comments/14
>
> So CVE-2012-1102 identifier is for perl XML-Atom problem. And this 
> (same XXE problem) being present in inkscape should get a new CVE
> id yet.
>
> Thank you && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat
> Security Response Team
Please use CVE-2012-5656 for the Inkscape fixes a XXE vulnerability
during rasterization of SVG images



- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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