USN-3861-1: PolicyKit vulnerability

USN-3861-1: PolicyKit vulnerability

policykit-1 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 18.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

PolicyKit could allow unintended access.

Software Description

• 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.

Update instructions

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

Ubuntu 18.10

libpolkit-backend-1-0 – 0.105-21ubuntu0.3

policykit-1 – 0.105-21ubuntu0.3

Ubuntu 18.04 LTS

libpolkit-backend-1-0 – 0.105-20ubuntu0.18.04.4

policykit-1 – 0.105-20ubuntu0.18.04.4

Ubuntu 16.04 LTS

libpolkit-backend-1-0 – 0.105-14.1ubuntu0.4

policykit-1 – 0.105-14.1ubuntu0.4

Ubuntu 14.04 LTS

libpolkit-backend-1-0 – 0.105-4ubuntu3.14.04.5

policykit-1 – 0.105-4ubuntu3.14.04.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2018-19788

Source: USN-3861-1: PolicyKit vulnerability