[Debian] [Announce] [Security] vzctl 4.9.4

Ola Lundqvist ola at inguza.com
Mon Sep 21 01:50:05 PDT 2015


Hi Igor

Unfortunately it was not. The order was wrong for ploop containers. I have
corrected that problem though.

Thanks anyway for checking.

// Ola

On Mon, Sep 21, 2015 at 10:39 AM, Igor Bazhitov <ibazhitov at odin.com> wrote:

> Hi, Ola.
>
> The script looks correct.
>
> WBR, Igor Bazhitov.
>
> 09.09.2015 22:09, Ola Lundqvist writes:
> > Privet Igor
> >
> > This will be the upgrade logic. Let me know if you find any flaw in it.
> >
> > TMPCFG=$(mktemp)
> > if ! grep VE_PRIVATE /etc/vz/vz.conf > $TMPCFG ; then
> >   echo "#Missing VE_PRIVATE assuming default" > $TMPCFG
> >   echo 'VE_PRIVATE=/vz/private/$VEID' >> $TMPCFG
> > fi
> > #cat $TMPCFG
> > for CF in /etc/vz/conf/*.conf ; do
> >    if ! grep VE_LAYOUT "$CF" > /dev/null ; then
> > VEID=$(basename "$CF" | sed 's/\.conf$//;')
> > X=simfs
> > if [ -e "${VE_PRIVATE}/root.hdd/DiskDescriptor.xml" ] ; then
> >    X=ploop
> > fi
> > . $TMPCFG
> > echo "Securing CT configuration $CF by adding VE_LAYOUT=$X"
> > echo "" >> $CF
> > echo "# Upgrade `date`: Securing CT config by adding VE_LAYOUT=$X" >> $CF
> > echo "VE_LAYOUT=$X" >> $CF
> >    fi
> > done
> > rm -f $TMPCFG
> > Best regards,
> >
> > // Ola
> >
> > On Fri, Sep 4, 2015 at 9:36 AM, Igor Bazhitov <ibazhitov at odin.com
> > <mailto:ibazhitov at odin.com>> wrote:
> >
> >     Hi, Ola.
> >
> >     > It does not matter really. Both ways will do.
> >
> >     All 4 patches for vzctl-4.8 are attached.
> >
> >     > However I have a question. As I understand the config is changed at
> >     > creation or start.
> >
> >     Yes.
> >
> >     > Should it be changed at upgrade time too to make sure
> >     > the next start is safe? Or is it changed before it is a security
> hazard?
> >
> >     Well, it definitely would be better to add correct VE_LAYOUT values
> to
> >     all CT configs during vzctl upgrade, since there could be a large
> time
> >     gap between vzctl upgrade and existing CTs (re)start. But in this
> case
> >     you'll need to implement the CT layout detection logic inside the
> >     upgrade script. The logic is simple: if there is a
> >     "root.hdd/DiskDescriptor.xml" file inside the CT's private directory
> >     (e.g. /vz/private/100) then we have "ploop" layout, otherwise -
> "simfs"
> >     layout.
> >
> >     WBR, Igor Bazhitov.
> >
> >     03.09.2015 21:31, Ola Lundqvist writes:
> >     > Hi Igor
> >     >
> >     > It does not matter really. Both ways will do.
> >     >
> >     > However I have a question. As I understand the config is changed at
> >     > creation or start. Should it be changed at upgrade time too to
> make sure
> >     > the next start is safe? Or is it changed before it is a security
> hazard?
> >     >
> >     > /Ola
> >     >
> >     > Sent from a phone
> >     >
> >     > Den 3 sep 2015 12:37 skrev "Igor Bazhitov" <ibazhitov at odin.com
> <mailto:ibazhitov at odin.com>
> >     > <mailto:ibazhitov at odin.com <mailto:ibazhitov at odin.com>>>:
> >     >
> >     >     Hi, Ola.
> >     >
> >     >     There are 4 patches in the original fix - 2 of them making
> various
> >     >     preparations and the other 2 do the actual fix. Do you need
> them ported
> >     >     to vzctl-4.8 as is, or as one big cumulative patch?
> >     >
> >     >     WBR, Igor Bazhitov.
> >     >
> >     >     01.09.2015 00:22, Ola Lundqvist writes:
> >     >     > Privet Kir and Igor
> >     >     >
> >     >     > Sources and patches here:
> >     >     > ftp://ftp.debian.org/debian/pool/main/v/vzctl/
> >     >     >
> >     >     > Source is named .orig.tar.gz
> >     >     > and the patches are either in .diff.gz or packaged in
> .debian.tar.gz
> >     >     >
> >     >     > I think we should at least backport 4.8 (current stable) and
> then
> >     >     maybe
> >     >     > oldstable 3.0.30. 3.0.24 is oldold stable so I guess you can
> skip
> >     >     that.
> >     >     >
> >     >     > Thanks in advance
> >     >     >
> >     >     > // Ola
> >     >     >
> >     >     > On Mon, Aug 31, 2015 at 11:17 PM, Kir Kolyshkin <
> kir at odin.com <mailto:kir at odin.com>
> >     >     <mailto:kir at odin.com <mailto:kir at odin.com>>
> >     >     > <mailto:kir at odin.com <mailto:kir at odin.com> <mailto:
> kir at odin.com
> >     <mailto:kir at odin.com>>>> wrote:
> >     >     >
> >     >     >
> >     >     >
> >     >     >     On 08/31/2015 12:15 PM, Ola Lundqvist wrote:
> >     >     >>     I was. :-) Thanks!
> >     >     >>
> >     >     >>     Will look into this shortly. Will also look into
> backporting
> >     >     the fix.
> >     >     >
> >     >     >     Ola,
> >     >     >
> >     >     >     I think Igor (in Cc) will be able to provide the fix
> backported,
> >     >     >     just let us know which version do you have in Debian
> (and a link
> >     >     >     to sources, as I guess you have some patches in there,
> too).
> >     >     >
> >     >     >     Kir.
> >     >     >
> >     >     >
> >     >     >>
> >     >     >>     // Ola
> >     >     >>
> >     >     >>     On Mon, Aug 31, 2015 at 8:47 PM, Kir Kolyshkin
> >     >     <kir at openvz.org <mailto:kir at openvz.org> <mailto:kir at openvz.org
> >     <mailto:kir at openvz.org>>
> >     >     >>     <mailto:kir at openvz.org <mailto:kir at openvz.org> <mailto:
> kir at openvz.org
> >     <mailto:kir at openvz.org>>>> wrote:
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>         On 08/26/2015 01:26 AM, Sergey Bronnikov wrote:
> >     >     >>
> >     >     >>             Hi
> >     >     >>
> >     >     >>             On 23:19 Tue 25 Aug , Ola Lundqvist wrote:
> >     >     >>
> >     >     >>                 Hi again
> >     >     >>
> >     >     >>                 Also I can not find where to download the
> software
> >     >     >>                 (neither binaries nor
> >     >     >>                 sources). Is it only available in git?
> >     >     >>
> >     >     >>             It is not so difficult to find sources.
> >     >     >>             We have one git repo for openvz sources -
> >     >     >>             src.openvz.org <http://src.openvz.org> <
> http://src.openvz.org>
> >     >     <http://src.openvz.org>.
> >     >     >>             vzctl sources are here
> >     >     >>
> https://src.openvz.org/projects/OVZL/repos/vzctl/browse
> >     >     >>
> >     >     >>
> >     >     >>         Ola is probably asking about the source tarball.
> It's here:
> >     >     >>
> >     >
> http://download.openvz.org/utils/vzctl/4.9.4/src/vzctl-4.9.4.tar.bz2
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>                 Cheers
> >     >     >>
> >     >     >>                 // Ola
> >     >     >>
> >     >     >>                 On Tue, Aug 25, 2015 at 11:15 PM, Ola
> Lundqvist
> >     >     >>                 <<mailto:ola at inguza.com <mailto:
> ola at inguza.com>
> >     >     <mailto:ola at inguza.com <mailto:ola at inguza.com>>>ola at inguza.com
> >     <mailto:ola at inguza.com> <mailto:ola at inguza.com <mailto:
> ola at inguza.com>>
> >     >     >>                 <mailto:ola at inguza.com
> >     <mailto:ola at inguza.com> <mailto:ola at inguza.com
> >     <mailto:ola at inguza.com>>>>
> >     >     wrote:
> >     >     >>
> >     >     >>                     Hi Sergey
> >     >     >>
> >     >     >>                     How serious should we consider this
> problem?
> >     >     >>                     Should I ask the Debian
> >     >     >>                     security team (Debian do not accept new
> >     >     revisions,
> >     >     >>                     just backports for
> >     >     >>                     security fixes to their stable
> releases) to
> >     >     >>                     backport this correction to the
> >     >     >>                     current vzctl stable package?
> >     >     >>
> >     >     >>                     In the meantime I'll build this 4.9.4
> for debian
> >     >     >>                     unstable and also upload
> >     >     >>                     to the openvz download directory. First
> testing
> >     >     >>                     and then after a few days
> >     >     >>                     to the wheezy and jessie stable targets.
> >     >     >>
> >     >     >>                     Regards,
> >     >     >>
> >     >     >>                     // Ola
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>                     On Tue, Aug 25, 2015 at 2:32 PM, Sergey
> Bronnikov
> >     >     >>                     <sergeyb at openvz.org <mailto:
> sergeyb at openvz.org>
> >     >     <mailto:sergeyb at openvz.org <mailto:sergeyb at openvz.org>>
> >     <mailto:sergeyb at openvz.org <mailto:sergeyb at openvz.org>
> >     >     <mailto:sergeyb at openvz.org <mailto:sergeyb at openvz.org>>>>
> >     >     >>                     wrote:
> >     >     >>
> >     >     >>                         OpenVZ project has released a new
> vzctl
> >     >     update
> >     >     >>                         for legacy OpenVZ.
> >     >     >>                         Read below for more information.
> >     Everybody is
> >     >     >>                         advised to upgrade.
> >     >     >>
> >     >     >>                         Changes
> >     >     >>                         =======
> >     >     >>                         * store VE layout to VE config on
> start
> >     >     >>                         * store VE layout in VE config
> >     during create
> >     >     >>                         and convert
> >     >     >>
> >     >     >>                         See full changelog here:
> >     >     >>
> >     >      https://src.openvz.org/projects/OVZL/repos/vzctl/commits
> >     >     >>
> >     >     >>                         Download
> >     >     >>                         ========
> >     >     >>
> >      http://wiki.openvz.org/Download/vzctl/4.9.4
> >     >     >>
> >     >     >>
> >     >     >>                         Thanks
> >     >     >>                         ======
> >     >     >>                         OpenVZ project would like to thank
> the
> >     >     >>                         RACK911LABS for discovering this
> >     >     >>                         bug and
> >     >     >>                         providing the attack scenario.
> >     >     >>
> >     >     >>
> >     >     >>                         Bug reporting
> >     >     >>                         =============
> >     >     >>                         Please report all bugs found to
> >     >     >>
> >     >      <https://bugs.openvz.org/>https://bugs.openvz.org/
> >     >     >>
> >     >     >>
> >     >     >>                         Other sources of info on updates
> >     >     >>                         ================================
> >     >     >>                         See http://planet.openvz.org/ to
> >     view all the
> >     >     >>                         news (including updates)
> >     >     >>                         online.
> >     >     >>                         There you can also find RSS/Atom
> >     feed links.
> >     >     >>
> >     >     >>
> >     >     >>                         Regards,
> >     >     >>                              OpenVZ team
> >     >     >>
> >     >      _______________________________________________
> >     >     >>                         Announce mailing list
> >     >     >>                         Announce at openvz.org
> >     <mailto:Announce at openvz.org>
> >     >     <mailto:Announce at openvz.org <mailto:Announce at openvz.org>>
> >     <mailto:Announce at openvz.org <mailto:Announce at openvz.org>
> >     >     <mailto:Announce at openvz.org <mailto:Announce at openvz.org>>>
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> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>                     --
> >     >     >>                       --- Inguza Technology AB --- MSc in
> Information
> >     >     >>                     Technology ----
> >     >     >>                     /  ola at inguza.com <mailto:
> ola at inguza.com> <mailto:ola at inguza.com
> >     <mailto:ola at inguza.com>>
> >     >     <mailto:ola at inguza.com <mailto:ola at inguza.com>
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> >     >     >>                     |  opal at debian.org <mailto:
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> >     >     >>                   --- Inguza Technology AB --- MSc in
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> >     >     >>                 Technology ----
> >     >     >>                 /  ola at inguza.com <mailto:ola at inguza.com>
> <mailto:ola at inguza.com
> >     <mailto:ola at inguza.com>>
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> >     >     >>                 |  opal at debian.org <mailto:opal at debian.org>
> <mailto:opal at debian.org
> >     <mailto:opal at debian.org>>
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> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>
> >     >     >>     --
> >     >     >>      --- Inguza Technology AB --- MSc in Information
> Technology ----
> >     >     >>     /  <mailto:ola at inguza.com <mailto:ola at inguza.com>
> >     >     <mailto:ola at inguza.com <mailto:ola at inguza.com>>>ola at inguza.com
> >     <mailto:ola at inguza.com> <mailto:ola at inguza.com <mailto:
> ola at inguza.com>>
> >     >     <mailto:ola at inguza.com <mailto:ola at inguza.com>
> >     <mailto:ola at inguza.com <mailto:ola at inguza.com>>>
> >     >     >>                      Annebergsslingan 37        \
> >     >     >>     |  <mailto:opal at debian.org <mailto:opal at debian.org>
> >     >     <mailto:opal at debian.org <mailto:opal at debian.org>>>
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> >     <mailto:opal at debian.org> <mailto:opal at debian.org
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> >     <mailto:opal at debian.org <mailto:opal at debian.org>>>
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> >     >     >>
> >     >     >
> >     >     >
> >     >     >
> >     >     >
> >     >     > --
> >     >     >  --- Inguza Technology AB --- MSc in Information Technology
> ----
> >     >     > /  ola at inguza.com <mailto:ola at inguza.com>
> >     <mailto:ola at inguza.com <mailto:ola at inguza.com>>
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> >     <mailto:opal at debian.org>>
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> ---------------------------------------------------------------
> >     >     >
> >     >
> >
> >
> >
> >
> > --
> >  --- Inguza Technology AB --- MSc in Information Technology ----
> > /  ola at inguza.com <mailto:ola at inguza.com>
> >  Annebergsslingan 37        \
> > |  opal at debian.org <mailto:opal at debian.org>                   654 65
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> >
>
>


-- 
 --- Inguza Technology AB --- MSc in Information Technology ----
/  ola at inguza.com                    Annebergsslingan 37        \
|  opal at debian.org                   654 65 KARLSTAD            |
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