Devuan bug report logs - #269
policykit-1: CVE-2018-19788

Package: policykit-1; Severity: critical; Reported by: Berbe <bernard+devuan@rosset.net>; merged with #268; Done: KatolaZ <katolaz@freaknet.org>; Maintainer for policykit-1 is Devuan Dev Team <devuan-dev@lists.dyne.org>.

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From: KatolaZ <katolaz@freaknet.org>
To: 269-done@bugs.devuan.org
Subject: solved in beowulf
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This has been solved in policykit-0.105-25+devuan1, available in
beowulf and ceres. Closing.


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Notification sent to Berbe <bernard+devuan@rosset.net>:
bug acknowledged by developer. Full text available.
Reply sent to KatolaZ <katolaz@freaknet.org>:
You have taken responsibility. Full text available.

Message received at 269@bugs.devuan.org:


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From: KatolaZ <katolaz@freaknet.org>
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[Reported here due to a glitch with #268]

There is no need to become root in order to use `service`:

$ /usr/sbin/service nginx status
[ ok ] nginx is running.
$

Even with a user with id larger than 4000000000:

$ sudo -u testpolkit /usr/sbin/service nginx stop
[....] Stopping nginx: nginxstart-stop-daemon: warning: failed to kill 2509: Operation not permitted
. ok
$

That's because sudo does *not* use policykit to test user privileges
(rather, it uses its own config files). So maybe this is not
applicable in this case?

HND

KatolaZ




Acknowledgement sent to KatolaZ <katolaz@freaknet.org>:
Extra info received and forwarded to list. Copy sent to owner@bugs.devuan.org. Full text available.
Information forwarded to devuan-bugs@lists.dyne.org, owner@bugs.devuan.org:
bug#269; Package policykit-1. Full text available.
Merged 268 269. Request was from KatolaZ <katolaz@freaknet.org> to control@bugs.devuan.org. Full text available.

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From: Berbe <bernard+devuan@rosset.net>
To: Devuan Bug Tracking System <submit@bugs.devuan.org>
Subject: policykit-1: CVE-2018-19788
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Package: policykit-1
Version: 0.105-18+devuan2.11
Severity: critical

Dear Maintainer,

Following CVE-2018-19788, it seems the current stable 0.105-18+devuan2.11 is susceptible to the bug in policykit-1 package from upstream, allowing any user with UID > INT_MAX to have access to root commands:

1. service nginx status
-bash: service: command not found
2. sudo useradd -u 4000000000 test
3. sudo -u test service nginx status
nginx is running.


-- System Information:
Distributor ID:	Devuan
Description:	Devuan GNU/Linux 9 (n/a)
Release:	9
Codename:	n/a

Architecture: x86_64

Kernel: Linux 4.9.0-8-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages policykit-1 depends on:
ii  dbus                   1.10.26-0+deb9u1
ii  libc6                  2.24-11+deb9u3
ii  libglib2.0-0           2.50.3-2
ii  libpam0g               1.1.8-3.6
ii  libpolkit-agent-1-0    0.105-18+devuan2.11
ii  libpolkit-backend-1-0  0.105-18+devuan2.11
ii  libpolkit-gobject-1-0  0.105-18+devuan2.11

policykit-1 recommends no packages.

policykit-1 suggests no packages.

-- no debconf information


Acknowledgement sent to Berbe <bernard+devuan@rosset.net>:
New bug report received and forwarded. Copy sent to owner@bugs.devuan.org. Full text available.
Report forwarded to devuan-bugs@lists.dyne.org, owner@bugs.devuan.org:
bug#269; Package policykit-1. Full text available.

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Devuan Bugs Owner <owner@bugs.devuan.org>.
Last modified: Mon, 25 May 2020 18:39:02 UTC