[qubes-users] XSA-245 does not affect the security of Qubes OS

[Andrew David Wong]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

The Xen Project has published Xen Security Advisory 245 (XSA-245).
This XSA does *not* affect the security of Qubes OS, and no user
action is necessary.

This XSA has been added to the XSA Tracker:

https://www.qubes-os.org/security/xsa/#245

- -- 
Andrew David Wong (Axon)
Community Manager, Qubes OS
https://www.qubes-os.org
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Re: [qubes-users] Re: Unable to uninstall or reinstall Whonix

[Person]

The Tor Control Port thing is actually a more common problem than I thought, 
but I might have to edit the torrc file and change the port connection.
https://tor.stackexchange.com/questions/12650/could-not-connect-to-tor-control-port
 

Otherwise, I might have to reinstall the Tor Browser Bundle or delete any 
possible old file configurations for Tor.

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[qubes-users] using non-default dispvms in 4.0

[Joshua Thayer]

Hi, I'm trying to use non-default disposable VMs in Qubes 4.0 and
running in to problems. My dom0 and AppVM templates are up to date with
the testing repos as of today.

My understanding from reading documentation and various mailing list
threads is that in Qubes 4.0 it should be possible to specify a template
to use when using disposable VMs using a syntax like:

    $ qvm-open-in-vm '$dispvm:kitten-dvm' ./cute-kitten.jpg

Assuming a VM named `kitten-dvm` exists on your system, and it has its
`template_for_dispvms` pref set to True via `qvm-prefs`, and the
appropriate policy is set in `/etc/qubes-rpc/policy/qubes.OpenInVM`...
in this case:

    $anyvm '$dispvm:kitten-dvm' allow

However, I consistently get "Request refused" when running the example
`qvm-open-in-vm` command above even when using the target_vmname
`$dispvm:fedora-25-dvm`.

Any help understanding how to use the new-style dispvm specification
would be appreciated!

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Re: [qubes-users] 4.0-rc1: qvm- remove incomplete (?) - All qubes functionality (qubesd) down as a result

[Ron Hunter-Duvar]

On 09/28/2017 10:55 AM, Johannes Graumann wrote:

On Wed, 2017-09-27 at 13:19 +0200, Johannes Graumann wrote:

Gentlepeople,

I recently managed to install the community whonix templates into my
4.0 setup and have since been striving to recreate the arrangements
of
proxyvms etc. I ran in 3.2.

In this process I erroneously create a vm called 'sys-whonix-gw',
using
the whonix-gw template. I proceeded to remove this vm using 'qvm-
remove' and ever since all qubes functionality does not come up at
reboot. Investigating the output of 'systemctl status qubesd' et al,
I
became aware of an error thrown that reports 'sys-whonix-gw' as
missing
... apparently there are remnants of that vm left in the system
despite
me calling 'qvm-remove'.

Short of a reinstall, is there anything I can do to rescue this
situation?

Thanks for any pointers.

Sincerely, Joh

Any hit at all?

Joh



Hi Joh,

I found quite a few bits and pieces of VMs lying around when looking at 
how to recover VMs from my previous install. This might take a while, 
but you can run the following commands in a root terminal session on dom0:


# cd /

# grep -r  * 2>/dev/null

No guarantees, and be careful what you remove/edit, but it's worth a shot.

Ron


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Re: [qubes-users] How to check total storage used by VM?

['One7two99' via qubes-users]

Hello Jerry,

> Now if I alotted in the vm itself 125gb and it shows 53gb then
> that extra space is still there or is it actually holding 125?

storage space is thin provisioned as such your App-VMs will grow over time.
You can check the available space with

df -h

Please keep in mind that you have several layers:

Physical Harddrive / SSD
Partitions
LUKS Encryption
LVM

LVM consists of:
LVM PV Physical Volumes (command: pvdisplay)
LVM VG Volume Groups (command: vgdisplay)
LVM LV Logical Volumes (command: lvdisplay)

This offers lots of flexibility but also raises complexity.
You could have only 10 GB physical free space on you drive, while a virtual 
machine with a thin provisioned drive could fool you that there is plenty free 
space available.

[788]

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Re: [qubes-users] Use another Window Manager (awesome) with Qubes OS

['One7two99' via qubes-users]

Hello Holger,

> I"ve been using awesome for almost 10 years and when I switched to Qubes
> half a year ago I wanted to continue using awesome, saw these instructions and
> gave i3 a try. (Which is a simple as "sudo qubes-dom0-update 
> qubes-i3-settings",
> logout, changing to i3 in the login manager and login in again.)

Thank you for the tip, I've watched some i3 videos and it looks good.
I'll give it a try. Just for info, the installation of i3 is possible via

sudo qubes-dom0-update i3 i3-settings-qubes
(not: qubes-i3-settings :-)

{788]

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Re: [qubes-users] 4.0-rc1: qvm- remove incomplete (?) - All qubes functionality (qubesd) down as a result

[Johannes Graumann]

On Wed, 2017-09-27 at 13:19 +0200, Johannes Graumann wrote:
> Gentlepeople,
> 
> I recently managed to install the community whonix templates into my
> 4.0 setup and have since been striving to recreate the arrangements
> of
> proxyvms etc. I ran in 3.2.
> 
> In this process I erroneously create a vm called 'sys-whonix-gw',
> using
> the whonix-gw template. I proceeded to remove this vm using 'qvm-
> remove' and ever since all qubes functionality does not come up at
> reboot. Investigating the output of 'systemctl status qubesd' et al,
> I
> became aware of an error thrown that reports 'sys-whonix-gw' as
> missing
> ... apparently there are remnants of that vm left in the system
> despite
> me calling 'qvm-remove'. 
> 
> Short of a reinstall, is there anything I can do to rescue this
> situation?
> 
> Thanks for any pointers.
> 
> Sincerely, Joh

Any hit at all?

Joh

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Re: [qubes-users] Re: Has anyone tried to activate SELINUX in Fedora 25?

[Steve Coleman]

On 09/26/2017 05:35 AM, pels wrote:

On Sunday, September 24, 2017 at 6:19:15 PM UTC+2, cooloutac wrote:

On Sunday, September 24, 2017 at 12:17:33 PM UTC-4, cooloutac wrote:

On Sunday, September 24, 2017 at 12:16:34 PM UTC-4, cooloutac wrote:

On Thursday, September 21, 2017 at 4:40:42 AM UTC-4, pels wrote:

On Wednesday, September 20, 2017 at 2:54:31 PM UTC+2, cooloutac wrote:

On Wednesday, September 20, 2017 at 4:41:58 AM UTC-4, pels wrote:

I'd like to activate SELINUX(enforcing) in VMs (f25 and f25-minimal), but fails:

[1.510532] audit: type=1404 audit(1505894636.317:2): enforcing=1 
old_enforcing=0 auid=4294967295 ses=4294967295
[1.601491] audit: type=1403 audit(1505894636.408:3): policy loaded 
auid=4294967295 ses=4294967295
[1.605815] systemd[1]: Successfully loaded SELinux policy in 95.611ms.
[1.617897] systemd[1]: Failed to mount tmpfs at /run: Permission denied
[.[0;1;31m!!.[0m] Failed to mount API filesystems, freezing.
[1.621206] systemd[1]: Freezing execution.

I had it enabled  in fedora 24 but after upgrading failed
I create a new template (f25 and f25-minimal) with same effect.

I have tried to reset SELinux to its initial state:
yum remove selinux-policy
rm -rf /etc/selinux
yum install selinux-policy-targeted
fixfiles -f -F relabel
reboot

Any ideas?

Thank you very much

Best Regards
   
   Is this a vm, if so do we really care if systemd is running in it?   You sure thats selinux?  what does sestatus say?


When googling this error seems people have same issue when running docker.  And 
you have to set seccomp to unconfined.


Thank you cooloutac

-Is this a vm
It happens in Templates and VMs.

-Is this a vm, if so do we really care if systemd is running in it?
The problem is when i enable SELINUX VMs/templates doesn't "boot" or fail to 
start.
If I disable SELINUX, the templates/VMs start whithout problems and systemd is 
activated.

-You sure thats selinux?
Yes i'm pretty sure, it's exactly the same config that i had in fedora24.
In dom0
qvm-prefs -s fedora-25 kernelopts "nopat security=selinux selinux=1"
and in VMs/Templats
/etc/selinux/config

SELINUX=enforcing
SELINUXTYPE=targeted

Default selinux config

-what does sestatus say?
I can't execute anything in template/VMs
in dom0:
qvm-run fedora-25 --nogui -pass-io -u root "sestatus"
Error(fedora-25): Domain 'fedora-25':qreexec not connected

-When googling this error seems people have same issue when running docker.  
And you have to set seccomp to unconfined

Yes, i've read it, but i don't know how disable seccomp and the consequences...


Could you make me a big favour and try to activate SELINUX?

Thank you very much

Best regards


Probably only useful in the template vm.  But still not sure how beneficial it 
would be was my point though.  Its probably not compatible with qubes, sounds 
like it breaks qrexec, maybe not worth the headache man.




Try running SELinux in permissive mode then use the SELinux audit2allow 
to turn the permission violations into new permit rules. Those permit 
rules will allow the system to boot normally once applied to the system 
policy. This process may need to be repeated.


I used to use this script back when I was using tcsh on a stock Fedora 
system, but it would be trivial to change to bash or just use the 
command line:


#!/bin/tcsh
echo
# find the avc entries for the application in the log file
grep "$argv[1]" /var/log/audit/audit.log >  "my$argv[1].out"

# pass those entries to audit to allow
cat  "my$argv[1].out" | audit2allow -M "my$argv[1]"

# display the generated policy so you can learn what its doing
cat "my$argv[1].te"

echo

# Just output to stdout the command needed to commit the new policy,
# this is for cut and paste command execution

echo semodule -i my$argv[1].pp
echo

Basically you give the script a search string and it grep locates all 
avc permission violations containing that application-name/error-message 
and creates a policy file to fix those specific problems, and then it 
echos the command needed to actually fix it to the console. If you agree 
with those permissions displayed you simply copy and paste that command 
back into the command line and press enter. Keep the *.te,*.pp files for 
any future upgrades should you need to repeat this on another system.


If you were running in permissive mode nothing will fail but the system 
will still log those avc violations. Once you have run the *.te file to 
update the policy, on the next boot those avc messages should be 
resolved, if so, turn on the se enforcement (targeted mode) and try 
booting again. Rinse and repeat as necessary until your system boots 
properly, then you can focus on the user application side of things. 
Targeted mode is best for the user, as it denies any system services 
from running that you didn't give permission to run but does not block 
the user from getting their work done.


As for Xen itself, there is also the Flask architecture (SELinux equiv) 
built into 

Re: [qubes-users] Possible to run Ethereum wallet on Qubes?

[Jerry]

On Thursday, September 28, 2017 at 6:15:26 AM UTC-7, Francesco wrote:
> On Thu, Sep 28, 2017 at 8:23 AM, Jerry  wrote:
> Everytime I try to run it, it hangs on install and will not load whatsoever. 
> I decided to run Linux Mint HVM yet that wont connect even tho I have the 
> same setup I got Kali Linux VM to work on.
> 
> 
> 
> Which one are you using? MyEtherWallet works for me in a standard applVM.
> 
> Best
> 
> Fran 
> 
> 
> 
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I want to run the official wallet or Mist. I dont trust any online wallets. 

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Re: [qubes-users] How to check total storage used by VM?

[Jerry]

On Thursday, September 28, 2017 at 7:14:10 AM UTC-7, One7two99 wrote:
> Hello Jerry,
> 
> 
> 
> >> I need to see how much room I have on my ssd preferrably by vm.
> 
> >> Seems I created and deleted several vms but I seem to have missing
> 
> >> space I should have. Any help or add on would be appreciated.
> 
> 
> 
> You could run the following command in your dom0:
> 
> du -sh /var/lib/qubes/appvms/* /var/lib/qubes/vm-templates/* 
> /var/lib/qubes/servicevms/*
> 
> 
> 
> This will show the summarized space of all VM directories.
> 
> Is this what your are looking for?
> 
> 
> 
> [788]

Yes that shows me. Thank you. Now if I alotted in the vm itself 125gb and it 
shows 53gb then that extra space is still there or is it actually holding 125?

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[qubes-users] Use another Window Manager (awesome) with Qubes OS

['One7two99' via qubes-users]

Hello,

I've recently seen the window manager "awesome" in action which I haven't heard 
of before.I would like to give it a try on my Qubes 3.2 installation.

https://awesomewm.org/

Has someone succesfully setup awesome under Qubes (which is basically a fedora) 
and has maybe some tips how to do so?
It seems there are two options:
1) install awesome via dnf/repositories
2) build a rpm package from the GIT sources
 http://pkgs.fedoraproject.org/cgit/rpms/awesome.git/tree/

I've also never changed my default window manager in Qubes ...
Any guidance would be helpfull, also an information if it can be done at all.

[788]

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Re: [qubes-users] How to check total storage used by VM?

['One7two99' via qubes-users]

Hello Jerry,

>> I need to see how much room I have on my ssd preferrably by vm.
>> Seems I created and deleted several vms but I seem to have missing
>> space I should have. Any help or add on would be appreciated.

You could run the following command in your dom0:
du -sh /var/lib/qubes/appvms/* /var/lib/qubes/vm-templates/* 
/var/lib/qubes/servicevms/*

This will show the summarized space of all VM directories.
Is this what your are looking for?

[788]

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Re: [qubes-users] Re: Screen freezing and input problems in AppVMs

[Michael Strasser]

Thanks for the information, I'll try that!

I just found something new, that's very odd:

* If I connect a second monitor via VGA, then fullscreen mode works on
both my laptop's monitor, as well as on the second monitor without any
problems

* If I connect a second monitor via HDMI, then fullscreen mode works
only on the second monitor

* If I don't connect a second monitor, fullscreen mode does not work
correctly

* Fullscreen terminals from dom0 work correctly, no matter the setup


I'm using the following commands to activate the second monitor for VGA:

xrandr --output DP2 --mode 1680x1050_60.00 --above eDP1


The following for HDMI:

xrandr --output HDMI1 --auto --above eDP1


To deactivate multiple desktops:

xrandr --output HDMI1 --off

xrandr --output DP2 --off


On 09/24/2017 12:24 PM, yuraei...@gmail.com wrote:
> On Sunday, September 24, 2017 at 8:52:32 AM UTC, Michael Strasser wrote:
>> Hi!
>>
>> I've been experiencing some strange issues recently, which I can't
>> really pin down on anything in particular.
>>
>> * I've been getting a frozen screen after random periods of time when
>> I've been using two different monitors. Usually the only solution is to
>> kill my machine.
>>
>> * Sometimes (again when using multiple screens) just mouse input and
>> keyboard input from my laptop stop working, although mouse input from my
>> USB mouse keeps working.
>>
>> * My laptop monitor has input "freezes" all the time (i.e. after about
>> 4-7 keypresses there is a delay of about 1 second until the input is
>> processed), but I do not experience the same on my second monitor and I
>> only experience them in AppVMs, not in dom0.
>>
>> * I can no longer put applications into fullscreen mode on my laptop
>> monitor - no input is recognized and the app "freezes" until I quit
>> fullscreen mode (at which point the input made in fullscreen mode is
>> delivered to/visible in the application) - fullscreen mode works fine on
>> my second monitor.
>>
>> I'm using Qubes 3.2 with i3, but I experienced the same problems with xfce.
>>
>> At first I thought this was a hardware issue, but I just tried booting
>> Ubuntu 16.04 from a USB stick and couldn't reproduce any of the issues.
>> I also just noticed that input "freezing" just happens in AppVMs, not in
>> dom0.
>>
>> I have no idea what is causing these issues, I've been using Qubes OS
>> since April and everything was fine, until about 1 1/2 months ago when
>> these problems started to arise. I also couldn't find any connection to
>> work load or anything performance related that would explain the issues.
>> I also tried changing the kernel version of one of the AppVMs from
>> 4.9.45-21 to 4.9.35-20 and 4.9.35-19 but nothing changed.
>>
>> Does anyone have any tips or has experienced something similar?
>>
>>
>> I'm using Qubes 3.2, kernel version 4.9.45-21 with i3 on a Lenovo X250.
>>
>>
>> Best regards
> To sum it up, I moved to the 4.9.45-21 kernel, and re-build some of my 
> AppVM's from scratch, which in combination, for now at least, solved the 
> speed/lag/freeze issues.
>

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Re: [qubes-users] Possible to run Ethereum wallet on Qubes?

[Franz]

On Thu, Sep 28, 2017 at 8:23 AM, Jerry  wrote:

> Everytime I try to run it, it hangs on install and will not load
> whatsoever. I decided to run Linux Mint HVM yet that wont connect even tho
> I have the same setup I got Kali Linux VM to work on.
>

Which one are you using? MyEtherWallet works for me in a standard applVM.
Best
Fran

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[qubes-users] Possible to run Ethereum wallet on Qubes?

[Jerry]

Everytime I try to run it, it hangs on install and will not load whatsoever. I 
decided to run Linux Mint HVM yet that wont connect even tho I have the same 
setup I got Kali Linux VM to work on. 

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[qubes-users] How to check total storage used by VM?

[Jerry]

I need to see how much room I have on my ssd preferrably by vm. Seems I created 
and deleted several vms but I seem to have missing space I should have. Any 
help or add on would be appreciated.

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Re: [qubes-users] Re: Adding a second monitor fails

[Holger Levsen]

On Thu, Sep 28, 2017 at 01:21:52AM -0700, Coracle wrote:
> I'm getting the message here and elsewhere that Qubes OS doesn't yet support 
> extended desktops or multiple monitors. 

no, that's wrong. Qubes supports multiple displays just fine, it's just based
on an 1-2 year old version of Fedora, so it supports whatever that supports.

so newer graphic cards might cause problems, or certain old ones too.


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Holger

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signature.asc
Description: PGP signature

Re: [qubes-users] Relation between increasing RAM and the increased need for display memory

[Zrubi]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

On 09/21/2017 08:47 PM, Teqleez wrote:
> Hi all.
> 
> I assume this is relevant not only for considerations related to
> the practical limit/benefit of increasing RAM in existing
> computers, but also regarding the specifications when buying new
> computers.
> 
> - At the following amounts of RAM; 8GB -> 16GB -> 24GB -> 32GB ->
> 48GB -> 64GB, how much does the requirements for the graphics card
> memory increase with each step, if we assume the
> normal/daily/"permanent" usage to be 70-80% of the available RAM?
> 
> This obviously depends on how many different VM's one has open, and
> how much video memory each one needs, but can we make an assumption
> on some sort of average number for this, to see if it is possible
> to find some kind of rule-of-thumb figures?
> 
> For example, if we assume a "normal"(?!?) Qubes-OS user whose sole 
> reason for increasing memory is in fact to be able to run more
> Qubes simultaneously; how many more Qubes can he/she expect to be
> running per extra 8gb of RAM, and how much more will each such step
> "typically" require of the graphics card memory, if we assume a
> "linear" growth in the number of concurrently open Qubes?
> 
> I am guessing that with the capacity to run (increasingly) many
> Qubes, the amount of applications running in each one will be
> lower, to the point where we most often choose to run
> "one-app-qubes". For the sake of this example we could also assume
> that this example user is a "lazy" person who will not bother
> configuring minimal templates, but only use the default shipped
> fedora-24(++) template for each one, just for the sake of
> simplicity and playing around with these numbers a bit.
> 

IMHO there is no real connection between RAM used by the OS and apps,
a and the RAM ins your VGA. (VRAM)

VRAM is used for:
- - game (3D) data rendering, which is out of scope in case of Qubes
(maybe if you using Compiz with fancy desktop effects)

- - display rendering.

The later is still need more and more VRAM because of the bigger and
bigger common resolutions Like:
800x600 -> 1024x768 -> 1920x1080 -> 2560x1080 -> 4K -> 8K -> etc.

So you still need more and more VRAM to render all your pixels in your
screens. These can be multiplied if you start using multi-monitor setups
.

But these needs are not growing as fast as your conventional RAM needs.
I'm using 3xHD screens, and the 512Mb VRAM used by the integrated VGA
is still enough for that,  while my OS has 16Gb RAM.


- -- 
Zrubi
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Re: [qubes-users] Re: Adding a second monitor fails

[Sean Hunter]

Works just fine for me on Qubes 4.0 rc 1

Sent from my phone. Sorry if brief. 

> On 28 Sep 2017, at 09:21, Coracle  wrote:
> 
> I'm getting the message here and elsewhere that Qubes OS doesn't yet support 
> extended desktops or multiple monitors. 
> 
> I want to build a navigation system for my boat based on Qubes OS. Modern nav 
> systems control the autopilot and display large amounts of information on 
> multiple monitors. Qubes OS offers not only a high level of security but also 
> seems to offer an opportunity to run incompatible applications 
> simultaneously. Not sure if this will mean anything to anyone here but I 
> would like to run TimeZero + Navionics vector charts on Windows in one Qube 
> simultaneously with OpenCPN + UKHO raster charts on Linux in a second Qube). 
> 
> Does anyone know whether Qube OS is eventually going to support multiple 
> monitors? 
> 
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[qubes-users] Re: Adding a second monitor fails

[Coracle]

I'm getting the message here and elsewhere that Qubes OS doesn't yet support 
extended desktops or multiple monitors. 

I want to build a navigation system for my boat based on Qubes OS. Modern nav 
systems control the autopilot and display large amounts of information on 
multiple monitors. Qubes OS offers not only a high level of security but also 
seems to offer an opportunity to run incompatible applications simultaneously. 
Not sure if this will mean anything to anyone here but I would like to run 
TimeZero + Navionics vector charts on Windows in one Qube simultaneously with 
OpenCPN + UKHO raster charts on Linux in a second Qube). 

Does anyone know whether Qube OS is eventually going to support multiple 
monitors? 

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