RHSA-2021:3503HighCVSS 7.6

Red Hat Security Advisory: Red Hat OpenStack Platform 13.0 (openstack-neutron) security update

Published
September 13, 2021
Last Modified
August 4, 2026

🔗 CVE IDs covered (1)

CVE-2021-40085 →

📋 Description

CVE-2021-40085 — openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts

🎯 Affected products24

  • Red Hat OpenStack Platform 13.0 - ELS
  • Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-1:12.1.1-42.1.el7ost.src as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-1:12.1.1-42.1.el7ost.src as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-common-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-common-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-linuxbridge-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-linuxbridge-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-macvtap-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-macvtap-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-metering-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-metering-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-ml2-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-ml2-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-openvswitch-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-openvswitch-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-rpc-server-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-rpc-server-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • openstack-neutron-sriov-nic-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • openstack-neutron-sriov-nic-agent-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server
  • python-neutron-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 - ELS
  • python-neutron-1:12.1.1-42.1.el7ost.noarch as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (4)