Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.3049
Red Hat OpenStack Platform 16.1 (openstack-neutron) security update
10 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Red Hat OpenStack Platform 16.1 (openstack-neutron)
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Overwrite Arbitrary Files -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-40085
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:3481
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: Red Hat OpenStack Platform 16.1 (openstack-neutron) security update
Advisory ID: RHSA-2021:3481-01
Product: Red Hat OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3481
Issue date: 2021-09-09
CVE Names: CVE-2021-40085
=====================================================================
1. Summary:
An update for openstack-neutron is now available for Red Hat OpenStack
Platform 16.1 (Train).
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat OpenStack Platform 16.1 - noarch
3. Description:
Neutron is a virtual network service for Openstack, and a part of Netstack.
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.
4. 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
5. Bugs fixed (https://bugzilla.redhat.com/):
1998052 - CVE-2021-40085 openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts
6. Package List:
Red Hat OpenStack Platform 16.1:
Source:
openstack-neutron-15.2.1-1.20210409073447.el8ost.src.rpm
noarch:
openstack-neutron-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-common-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-linuxbridge-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-macvtap-agent-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-metering-agent-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-ml2-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-openvswitch-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-rpc-server-15.2.1-1.20210409073447.el8ost.noarch.rpm
openstack-neutron-sriov-nic-agent-15.2.1-1.20210409073447.el8ost.noarch.rpm
python3-neutron-15.2.1-1.20210409073447.el8ost.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/
7. References:
https://access.redhat.com/security/cve/CVE-2021-40085
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Du3o
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=VOsD
-----END PGP SIGNATURE-----