========================================================================== Ubuntu Security Notice USN-3861-1 January 16, 2019 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 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3861-1 CVE-2018-19788 Package Information: https://launchpad.net/ubuntu/+source/policykit-1/0.105-21ubuntu0.3 https://launchpad.net/ubuntu/+source/policykit-1/0.105-20ubuntu0.18.04.4 https://launchpad.net/ubuntu/+source/policykit-1/0.105-14.1ubuntu0.4 https://launchpad.net/ubuntu/+source/policykit-1/0.105-4ubuntu3.14.04.5