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Ubuntu Security Notice USN-4036-1

Ubuntu Security Notice USN-4036-1
Posted Jun 25, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4036-1 - 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.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-9735
SHA-256 | e4e59fbad634306202b9b1275923fc716c0b615791f01c6e7aa73e2b89177a0b

Ubuntu Security Notice USN-4036-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4036-1
June 25, 2019

neutron vulnerability
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 16.04 LTS

Summary:

A system hardening measure could be bypassed.

Software Description:
- neutron: OpenStack Virtual Network Service

Details:

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:
python-neutron 2:13.0.2-0ubuntu3.4
python3-neutron 2:13.0.2-0ubuntu3.4

Ubuntu 16.04 LTS:
python-neutron 2:8.4.0-0ubuntu7.4

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

References:
https://usn.ubuntu.com/4036-1
CVE-2019-9735

Package Information:
https://launchpad.net/ubuntu/+source/neutron/2:13.0.2-0ubuntu3.4
https://launchpad.net/ubuntu/+source/neutron/2:8.4.0-0ubuntu7.4
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