[USN-3807-1] NetworkManager vulnerability

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[USN-3807-1] NetworkManager vulnerability

Marc Deslauriers-3
Ubuntu Security Notice USN-3807-1
November 05, 2018

network-manager vulnerability

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


NetworkManager could be made to crash or run programs if it received
specially crafted network traffic.

Software Description:
- network-manager: Network connection manager


Felix Wilhelm discovered that the NetworkManager internal DHCPv6 client
incorrectly handled certain DHCPv6 messages. In non-default configurations
where the internal DHCP client is enabled, an attacker on the same network
could use this issue to cause NetworkManager to crash, resulting in a
denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.10:
  network-manager                 1.12.4-1ubuntu1.1

Ubuntu 18.04 LTS:
  network-manager                 1.10.6-2ubuntu1.1

Ubuntu 16.04 LTS:
  network-manager                 1.2.6-0ubuntu0.16.04.3

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


Package Information:

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