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Ubuntu 18.04 LTS & 19.04 USN-4120-2: Systemd Networking Issue Fix

ubuntu
Calendar Grey September 10, 2019
Dist Ubuntu Esm H88
Ubuntu Security Alert USN-4120-2 resolves an issue with systemd impacting Ubuntu 18.04 LTS and 19.04 updates.
USN-4120-1 caused a regression in systemd.

Summary

USN-4120-1 caused a regression in systemd.

Software Description:

- systemd: system and service manager

Details:

USN-4120-1 fixed a vulnerability in systemd. The update included a recent

SRU from the updates pocket that introduced networking problems for some

users. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the systemd-resolved D-Bus interface did not

enforce appropriate access controls. A local unprivileged user could

exploit this to modify a system's DNS resolver settings.

Topics%20covered

Topics Covered

security advisory Ubuntu regression networking issue systemd

Update Instructions

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

Ubuntu 19.04:
  systemd                         240-6ubuntu5.7

Ubuntu 18.04 LTS:
  systemd                         237-3ubuntu10.29

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

References

https://ubuntu.com/security/notices/USN-4120-2

https://ubuntu.com/security/notices/USN-4120-1

https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1842651

Severity
important
Lowest
Low
Medium
High
Critical

September 10, 2019

Topics%20covered

Topics Covered

security advisory Ubuntu regression networking issue systemd

Package Information

https://launchpad.net/ubuntu/+source/systemd/240-6ubuntu5.7
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.29

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