Tor not running on debian-10 template with security-misc 3:7.7-1 installed

minimal · September 4, 2019, 10:16am

Hello!
As per the title, Tor is not running anymore on a debian-10 template with security-misc 3:7.7-1 installed from Whonix’s buster-proposed-updates repo. This is the output of my syslog when I restart Tor daemon.

localhost Tor[789]: Directory /run/tor cannot be read: Permission denied
localhost Tor[789]: Before Tor can create a control socket in “/run/tor/control”, the directory “/run/tor” needs to exist, and to be accessible only by the user and group account that is running Tor.

I am running another version of security-misc (3:3.5-1) on another debian-10 template which I use for sys-corridor and I am not experiencing any problem there. Also, everything is working well on Whoinx templates.

Could somebody give me a suggestion in order to fix this problem, please?
Cheers.

awokd · September 5, 2019, 7:04pm

Have you tried to rollback to security-misc 3:3.5-1?

minimal · September 6, 2019, 9:30am

Hi and thanks for your answer.
Yes, I have just tried and Tor is not working. Here are my logs:

$ tail -f /var/log/syslog
localhost Tor[776]: Directory /run/tor cannot be read: Permission denied
localhost Tor[776]: Before Tor can create a control socket in “/run/tor/control”, the directory “/run/tor” needs to exist, and to be accessible only by the user and group account that is running Tor. (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.
localhost Tor[776]: New control connection opened from 127.0.0.1.

and

$ tail -f /var/log/vanguards
NOTICE: Vanguards 0.3.1 connected to Tor 0.4.1.5 using stem 1.7.1
NOTICE: Tor needs descriptors: Cannot read /var/lib/tor/cached-microdesc-consensus: [Errno 2] No such file or directory: ‘/var/lib/tor/cached-microdesc-consensus’. Trying again…

I don’t think this is relevant but if I

sudo su
/usr/lib/security-misc/permission-lockdown failed: exit code 2

And I become root.

Thanks.

awokd · September 6, 2019, 10:42am

I wonder if there’s an undefined dependency on something specific to
Whonix templates. “Bruce force” way to fix it is to uninstall the broken
debian-10 template, and reinstall a new one.

minimal · September 6, 2019, 11:56am

Hi awokd,
yes if no solution comes up I will be forced to uninstall the broken debian-10-template and completely reconfigure (gosh) a new one.

Patrick · September 6, 2019, 12:53pm

Try this:

https://www.whonix.org/wiki/Tor#Permissions_Fix

Please create a separate thread for that.

minimal · September 7, 2019, 10:51am

Thanks for your answer and apologies for the late reply.

I updated again security-misc to the last version on the buster-proposed-repo (3:8.2-1) Then I have chowned the dir and restarted Tor as suggested in the link you posted above. Tor is still not working, but the output has changed a bit.

tail-f /var/log/syslog
localhost Tor[783]: Directory /run/tor cannot be read: Permission denied
localhost Tor[783]: Before Tor can create a control socket in “/run/tor/control”, the directory “/run/tor” needs to exist, and to be accessible only by the user and group account that is running Tor. (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.)
localhost Tor[783]: New control connection opened from 127.0.0.1

and

tail -f /var/log/vanguards
NOTICE: Tor needs descriptors: Cannot read /var/lib/tor/cached-microdesc-consensus: [Errno 2] No such file or directory: ‘/var/lib/tor/cached-microdesc-consensus’. Trying again…

Indeed, the file is not present.

If I

sudo touch /var/lib/tor/cached-microdesc-consensus && sudo chown debian-tor:debian-tor /var/lib/tor/cached-microdesc-consensus

then

tail -f /var/log/vanguards.lorg
NOTICE: Tor needs descriptors: Descriptor information is unavailable, tor might still be downloading it. Trying again…

and

tail-f /var/log/syslog
localhost Tor[783]: Directory /run/tor cannot be read: Permission denied
localhost Tor[783]: Before Tor can create a control socket in “/run/tor/control”, the directory “/run/tor” needs to exist, and to be accessible only by the user and group account that is running Tor. (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.)
localhost Tor[783]: New control connection opened from 127.0.0.1.
localhost Tor[783]: Problem bootstrapping. Stuck at 10% (conn_done): Connected to a relay. (Connection timed out; TIMEOUT; count 22; recommendation warn; host XXXXXXXXXXXXXXXXX at YYYYYYY:443)
localhost Tor[783]: 21 connections have failed:
localhost Tor[783]: 21 connections died in state connect()ing with SSL state (No SSL object)

Cheers

Patrick · September 9, 2019, 9:07am

Check permissions using the following two commands. Then post output here.

Run:

sudo ls -la /run/ | grep tor

Expected output:

drwxr-sr-x 2 debian-tor debian-tor 140 Sep 9 08:22 tor

Run:

sudo ls -la /run/tor

Expected output:

total 88
drwxr-sr-x 2 debian-tor debian-tor 140 Sep 9 08:22 .
drwxr-xr-x 31 root root 780 Sep 9 08:22 …
srw-rw---- 1 debian-tor debian-tor 0 Sep 9 08:22 control
-rw-r----- 1 debian-tor debian-tor 32 Sep 9 08:22 control.authcookie
-rw-r----- 1 debian-tor debian-tor 78493 Sep 9 08:20 log
srw-rw-rw- 1 debian-tor debian-tor 0 Sep 9 08:22 socks
-rw-r–r-- 1 debian-tor debian-tor 4 Sep 9 08:22 tor.pid

Also how did you install Tor?

sudo apt install tor

Whonix uses Tor from buster repository from deb.torproject.org, not from packages.debian.org. Downoaded from there and uploaded to deb.whonix.org. (https://www.whonix.org/wiki/Dev/Tor) That might make a difference.

security-misc package isn’t tested with Tor from packages.debian.org. Only with deb.torproject.org. But by using deb.whonix.org, you’d also get the same Tor version.

(See also: https://github.com/Whonix/anon-shared-build-apt-sources-tpo might be convenient.)

minimal · September 9, 2019, 10:27am

Hi, thanks for your answer.
Here are my outputs:

sudo ls -la /run/ | grep tor

Output:

drwxr-sr-x 2 debian-tor debian-tor 100 Sep X XX:XX to

And

sudo ls -la /run/tor/

Output:

total 8
drwxr-sr-x 2 debian-tor debian-tor 100 Sep X XX:XX .
drwxr-xr-x 27 root root 740 Sep X XX:XX …
-rw-r----- 1 debian-tor debian-tor 32 Sep X XX:XX control.authcookie
srw-rw-rw- 1 debian-tor debian-tor 0 Sep X XX:XX socks
-rw-r–r-- 1 debian-tor debian-tor 4 Sep X XX:XX tor.pid

That’s it.

I am using deb.torproject.org repos. As I specified in my first post, I am experiencing this problem only in a debian-10 template with security-misc installed. Whonix-ws or whonix-gw templates are not affected by such issue.

Patrick · September 9, 2019, 12:29pm

Works for me in debian-10 TemplateVM.

dpkg -l | grep security-misc

ii security-misc 3:8.2-1 all enhances misc security settings

ii tor 0.4.1.5-1~d10.buster+1 amd64 anonymizing overlay network for TCP

I am not familiar with vanguards.

The mix with it may be the cause. However, even that works for me.

sudo systemctl status vanguards
● vanguards.service - Additional protections for Tor onion services
   Loaded: loaded (/lib/systemd/system/vanguards.service; disabled; vendor preset: enabled)
   Active: active (running) since Mon 2019-09-09 08:28:08 EDT; 20s ago
     Docs: man:vanguards(1)
 Main PID: 4485 (vanguards)
    Tasks: 3 (limit: 4667)
   Memory: 84.7M
   CGroup: /system.slice/vanguards.service
           └─4485 /usr/bin/pypy /usr/bin/vanguards

Sep 09 08:28:08 atest-debian-10-based systemd[1]: vanguards.service: Main process exited, code=killed, status=15/TERM
Sep 09 08:28:08 atest-debian-10-based systemd[1]: vanguards.service: Succeeded.
Sep 09 08:28:08 atest-debian-10-based systemd[1]: Stopped Additional protections for Tor onion services.
Sep 09 08:28:08 atest-debian-10-based systemd[1]: Started Additional protections for Tor onion services.
Sep 09 08:28:08 atest-debian-10-based vanguards[4485]: NOTICE[Mon Sep 09 08:28:08 2019]: Creating new vanguard state file at: /var/lib/tor/vanguards.state
Sep 09 08:28:08 atest-debian-10-based vanguards[4485]: NOTICE[Mon Sep 09 08:28:08 2019]: Vanguards 0.3.0 connected to Tor 0.4.1.5 using stem 1.7.1

Patrick · September 9, 2019, 12:33pm

Also managed to sudo apt purge tor and reinstall of Tor while security-misc was installed.

minimal · September 9, 2019, 2:54pm

It is kind of weird but finally I managed to make Tor working on the debian-10 template with security-misc installed. What I did?

apt purge tor vanguards

Then I reinstalled everything. Magic, it worked! So I changed again my torrc and added the two options that I have been used for ages:

Sandbox 1
ConnectionPadding 1

I restarted Tor and Vanguards. Nothing was working again and when I run

sudo -u debian-tor nyx

the output was:

Unable to connect to tor. Maybe it’s running without a ControlPort?

Initially I have tried to change vanguards.conf as follow:

#control_ip = 127.0.0.1
#control_port = 9051
control_socket = /var/run/tor/control

But nothing was working. Then I just commented out

#Sandbox 1

And everything is working fine again. Not sure why.

I have been using this option with vanguards for months, even before the Debian Buster release. I honestly have no idea if the culprit of this is related to Tor 4.1, security-misc 3:7 or what else. However, it SEEMS that now everything is working again.