[USN-3861-1] PolicyKit vulnerability
Marc Deslauriers
marc.deslauriers at canonical.com
Wed Jan 16 14:17:41 UTC 2019
==========================================================================
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
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