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Ubuntu: 4036-1 Moderate Risk of Neutron Security Bypass Error

ubuntu
Calendar Grey June 25, 2019
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-4036-1 outlines a weakness in neutron that permits authenticated users to circumvent security protocols.
A system hardening measure could be bypassed.

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.

Topics%20covered

Topics Covered

security advisory security issue system hardening Ubuntu authenticated attack neutron firewall rule

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://ubuntu.com/security/notices/USN-4036-1

CVE-2019-9735

June 25, 2019

Topics%20covered

Topics Covered

security advisory security issue system hardening Ubuntu authenticated attack neutron firewall rule

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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