1. Ubuntu Security Notices
  2. USN-3861-1

USN-3861-1: PolicyKit vulnerability

Publication date

16 January 2019

Overview

PolicyKit could allow unintended access.

Releases

Packages

  • policykit-1 - framework for managing administrative policies and privileges

Details

It was discovered that PolicyKit incorrectly handled certain large user
UIDs. A local attacker with a large UID could possibly use this issue to
perform privileged actions.

It was discovered that PolicyKit incorrectly handled certain large user
UIDs. A local attacker with a large UID could possibly use this issue to
perform privileged actions.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.10 cosmic libpolkit-backend-1-0 –  0.105-21ubuntu0.3
policykit-1 –  0.105-21ubuntu0.3
18.04 bionic libpolkit-backend-1-0 –  0.105-20ubuntu0.18.04.4
policykit-1 –  0.105-20ubuntu0.18.04.4
16.04 xenial libpolkit-backend-1-0 –  0.105-14.1ubuntu0.4
policykit-1 –  0.105-14.1ubuntu0.4
14.04 trusty libpolkit-backend-1-0 –  0.105-4ubuntu3.14.04.5
policykit-1 –  0.105-4ubuntu3.14.04.5

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References

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