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Red Hat OpenStack Platform 16.2 RHSA-2021-3488-01 Important: DoS Risk Fix

red hat
Calendar Grey September 15, 2021
Dist Redhat Esm H88
Fortify the defenses of Red Hat OpenStack Platform 16.2 through essential enhancements for openstack-neutron addressing critical vulnerabilities.
An update for openstack-neutron is now available for Red Hat OpenStack Platform 16.2 (Train)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

Neutron is a virtual network service for OpenStack. Just like OpenStack Nova provides an API to dynamically request and configure virtual servers, Neutron provides an API to dynamically request and configure virtual networks. These networks connect "interfaces" from other OpenStack services (e.g., virtual NICs from Nova VMs). The Neutron API supports extensions to provide advanced network capabilities (e.g., QoS, ACLs, network, monitoring, etc.).
Security Fix(es):
* arbitrary dnsmasq reconfiguration via extra_dhcp_opts (CVE-2021-40085)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.

Topics%20covered

Topics Covered

security advisory DoS important network service openstack risk fix

References

https://access.redhat.com/security/cve/CVE-2021-40085 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat OpenStack Platform 16.2:
Source: openstack-neutron-15.3.5-2.20210608154813.el8ost.3.src.rpm
noarch: openstack-neutron-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-common-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-linuxbridge-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-macvtap-agent-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-metering-agent-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-ml2-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-openvswitch-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-rpc-server-15.3.5-2.20210608154813.el8ost.3.noarch.rpm openstack-neutron-sriov-nic-agent-15.3.5-2.20210608154813.el8ost.3.noarch.rpm python3-neutron-15.3.5-2.20210608154813.el8ost.3.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3488-01
Product: Red Hat OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3488
Issue date: 2021-09-15

Topic

An update for openstack-neutron is now available for Red Hat OpenStackPlatform 16.2 (Train).Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory DoS important network service openstack risk fix

Relevant Releases Architectures

Red Hat OpenStack Platform 16.2 - noarch

Bugs Fixed

1916701 - Neutron API workers are not named correctly in PS output

1929829 - [OSP16.2]Ha router configuration as master error due to qg-xx interface down

1938966 - Quota API returns invalid JSON when 'reserved' > 0

1970051 - [SRIOV] min BW placement enforcement fails when NIC does not support dataplane enforcement

1979572 - Fail to deploy vm with SRIOV ports, fix need to be backported to 16.2 d/s

1998052 - CVE-2021-40085 openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts

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