ODP: polkit rules are no longer working

[Piotr Łobacz]

Hi,
So, this is a bug in yocto not polkit. Btw. I was just writting to you now, that I have switched from duktape to mozjs and yes, it started to work for me back again. I think I should write to open embedded about this issue.

BR,
________________________________
Od: Jan Rybar <jrybar at redhat.com>
Wysłane: środa, 8 czerwca 2022 12:29
Do: Piotr Łobacz <piotr.lobacz at vm.pl>
DW: polkit-devel at lists.freedesktop.org <polkit-devel at lists.freedesktop.org>
Temat: Re: polkit rules are no longer working

Hi,


On Wed, Jun 8, 2022 at 10:41 AM Piotr Łobacz <piotr.lobacz at vm.pl<mailto:piotr.lobacz at vm.pl>> wrote:
Hi Jan, All,
sorry for late response, but it was quite a challenge for me to backport old polkit 0.116 from yocto 3.4 with mozjs dependency (it demands version 0.60 and in kirkstone the lowest is 0.78). More over i had to add fixes for 0.60 in order to compile it with python 3.10 (in later yocto it was 3.8). But fortunately I have succeded and I can confirm that our rules are working.
I needed to know whether polkit-0.118 or 0.117 break the functionality, but I can test that with modified rules file of your on Fedora once I find some time.

Now the biggest difference which I have noticed is that polkit recipe has switched from mozjs to duktape and I have no idea it if implies in any way. Also, I haven't checked the other versions between 0.116 and 0.119.
Duktape is not present in 0.119 yet. Changing mozjs version and one CVE fixup in dbus communication are the biggest changes in those.

Cheers.

BR
Piotr Lobacz
________________________________
Od: polkit-devel <polkit-devel-bounces at lists.freedesktop.org<mailto:polkit-devel-bounces at lists.freedesktop.org>> w imieniu użytkownika Piotr Łobacz <piotr.lobacz at vm.pl<mailto:piotr.lobacz at vm.pl>>
Wysłane: wtorek, 7 czerwca 2022 13:37
Do: Jan Rybar <jrybar at redhat.com<mailto:jrybar at redhat.com>>
DW: polkit-devel at lists.freedesktop.org<mailto:polkit-devel at lists.freedesktop.org> <polkit-devel at lists.freedesktop.org<mailto:polkit-devel at lists.freedesktop.org>>
Temat: Re: polkit rules are no longer working

Hi Jan,
First thx for quick answer. I am currently out, but I will try to do all the test in the evening and get back to you with all the informations.

BR
Piotr Lobacz

Pobierz aplikację Outlook dla systemu iOS<https://aka.ms/o0ukef>
________________________________
Od: Jan Rybar <jrybar at redhat.com<mailto:jrybar at redhat.com>>
Wysłane: Tuesday, June 7, 2022 12:41:46 PM
Do: Piotr Łobacz <piotr.lobacz at vm.pl<mailto:piotr.lobacz at vm.pl>>
DW: polkit-devel at lists.freedesktop.org<mailto:polkit-devel at lists.freedesktop.org> <polkit-devel at lists.freedesktop.org<mailto:polkit-devel at lists.freedesktop.org>>
Temat: Re: polkit rules are no longer working

Hello,

I'm not aware of anything apparent that should affect that. AFAIK mozjs changed IIRC twice between those versions and then there was a vulnerability mitigation.
Can you please provide outputs from journal?
Also, do you happen to have an option to downgrade to 0.118 or lower to determine the version to blame?

In case of further questions, don't hesitate to reach out to me.
Thanks.

Jan Rybar

On Tue, Jun 7, 2022 at 12:07 PM Piotr Łobacz <piotr.lobacz at vm.pl<mailto:piotr.lobacz at vm.pl>> wrote:
Hi all,
I am facing an issue with polkit rules for pkexec. Currently when i try to run an application with pkexec command I'm facing an error:

Jun 07 09:46:06 eg pkexec[59699]: test: Error executing command as another user: Not authorized [USER=root] [TTY=/dev/pts/0] [CWD=/home/root] [COMMAND=/usr/sbin/nft]

the rule for this to be run, looks like this:

polkit.addRule(function(action, subject) {
    user_app = [
    '/bin/chmod',
    '/bin/chown',
    '/bin/rm',
    '/sbin/ifconfig',
    '/sbin/route',
    '/usr/sbin/update-ca-certificates',
    '/usr/bin/hostnamectl',
    '/usr/bin/iotedge',
    '/usr/bin/swupdate',
    '/usr/bin/timedatectl',
    '/usr/sbin/dmidecode',
    '/usr/sbin/eg_reboot',
    '/usr/sbin/factory_reset',
    '/usr/sbin/grub_console',
    '/usr/sbin/nft',
    '/usr/sbin/read_admin_keys',
    '/usr/sbin/useradd',
    '/usr/sbin/userdel'
];
    if (action.id<http://action.id> == "org.freedesktop.policykit.exec" && subject.user == "tes" && user_app.includes(action.lookup("program"))) {
        return polkit.Result.YES;
}
});

and is stored in /etc/polkit-1/rules.d/30-sbin-test.rules. This was all working before, with polkit 0.116, but now we have switched to newer yocto 4.0 and there is polkit 0.119, with which it stopped working for us. Does something has changed in the polkitd service and I'm missing it?

BR
Piotr


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