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Ubuntu Security Notice USN-4120-1

Ubuntu Security Notice USN-4120-1
Posted Sep 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4120-1 - 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.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2019-15718
SHA-256 | c86f578cb209c9dd585d96bb0fc7af8226aa79a63c36f9a84d3f1e26a081c040

Ubuntu Security Notice USN-4120-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4120-1
September 03, 2019

systemd vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS

Summary:

systemd-resolved would allow unprivileged users to change DNS settings.

Software Description:
- systemd: system and service manager

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.

Update instructions:

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

Ubuntu 19.04:
systemd 240-6ubuntu5.6

Ubuntu 18.04 LTS:
systemd 237-3ubuntu10.28

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

References:
https://usn.ubuntu.com/4120-1
CVE-2019-15718

Package Information:
https://launchpad.net/ubuntu/+source/systemd/240-6ubuntu5.6
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.28
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