[USN-5252-1] PolicyKit vulnerability

========================================================================== Ubuntu Security Notice USN-5252-1 January 25, 2022
policykit-1 vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
Summary:
policykit-1 could be made to run programs as an administrator.
Software Description: – policykit-1: framework for managing administrative policies and privileges
Details:
It was discovered that the PolicyKit pkexec tool incorrectly handled command-line arguments. A local attacker could use this issue to escalate privileges to an administrator.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: policykit-1 0.105-31ubuntu0.1
Ubuntu 20.04 LTS: policykit-1 0.105-26ubuntu1.2
Ubuntu 18.04 LTS: policykit-1 0.105-20ubuntu0.18.04.6
After a standard system update you need to reboot your computer to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5252-1 CVE-2021-4034
Package Information: launchpad.net/ubuntu/+source/policykit-1/0.105-31ubuntu0.1 launchpad.net/ubuntu/+source/policykit-1/0.105-26ubuntu1.2 launchpad.net/ubuntu/+source/policykit-1/0.105-20ubuntu0.18.04.6