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USN-4036-1: OpenStack Neutron vulnerability

25 June 2019

A system hardening measure could be bypassed.



  • neutron - OpenStack Virtual Network Service


Erik Olof Gunnar Andersson discovered that OpenStack Neutron incorrectly
handled certain security group rules in the iptables firewall module. An
authenticated attacker could possibly use this issue to block further
application of security group rules for other instances.

Update instructions

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

Ubuntu 18.10
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.