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Date: Thu, 21 Jul 2016 09:55:35 +0100
From: "Daniel P. Berrange" <berrange@redhat.com>
Message-ID: <20160721085535.GA13528@redhat.com>
Reply-To: "Daniel P. Berrange" <berrange@redhat.com>
References: <8E78D212B8C25246BE4CE7EA0E645FE53D7ED8@SZXEMI504-MBS.china.huawei.com>
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Subject: Re: [Qemu-devel] oss-security - CVE-2014-3672 libvirt: DoS via
 excessive logging
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To: "Xulei (Stone)" <stone.xulei@huawei.com>
Cc: "Ian.Jackson" <Ian.Jackson@eu.citrix.com>, qemu-devel <qemu-devel@nongnu.org>

On Thu, Jul 21, 2016 at 02:24:43AM +0000, Xulei (Stone) wrote:
> Hi,
>=20
> A CVE=EF=BC=88CVE-2014-3672=EF=BC=89 vulnerability was reported in Xen.=
=20
> I want to know how to reproduce this CVE and whether the qemu-kvm was a=
ffected ?
>=20
> Hyperlink: https://web.nvd.nist.gov/view/vuln/detail?vulnId=3DCVE-2014-=
3672
> Hyperlink: http://www.openwall.com/lists/oss-security/2016/05/24/5

Yes, QEMU is affected, but we did not fix it at the QEMU layer. Instead
libvirt has introduced a virtlogd daemon to handle all writing of data
to files. So QEMU now merely writes a pipe FD, and virtlogd takes care
of file rotation.

Regards,
Daniel
--=20
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