[USN-5252-2] PolicyKit vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Tue Jan 25 19:47:30 UTC 2022
==========================================================================
Ubuntu Security Notice USN-5252-2
January 25, 2022
policykit-1 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
policykit-1 could be made to run programs as an administrator.
Software Description:
- policykit-1: framework for managing administrative policies and privileges
Details:
USN-5252-1 fixed a vulnerability in policykit-1. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory 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 16.04 ESM:
policykit-1 0.105-14.1ubuntu0.5+esm1
Ubuntu 14.04 ESM:
policykit-1 0.105-4ubuntu3.14.04.6+esm1
After a standard system update you need to reboot your computer to make all
the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5252-2
https://ubuntu.com/security/notices/USN-5252-1
CVE-2021-4034
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