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Re: CVE request: Inkscape fixes a XXE vulnerability during rasterization of SVG images
From: Jan Lieskovsky <jlieskov () redhat com>
Date: Wed, 19 Dec 2012 05:37:17 -0500 (EST)

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


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

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