Ubuntu alert USN-5252-2 (policykit-1)

From:
             
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-5252-2] PolicyKit vulnerability
Date:
             
 
Tue, 25 Jan 2022 16:47:30 -0300
Message-ID:
             
 
<20220125194730.GB1857174@d4rkl41n>
==========================================================================
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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