Reviewed: https://review.opendev.org/c/openstack/neutron/+/913708
Committed:
https://opendev.org/openstack/neutron/commit/5e1188ef38da3f196aadf82a3842fa982c9a0c83
Submitter: "Zuul (22348)"
Branch: master
commit 5e1188ef38da3f196aadf82a3842fa982c9a0c83
Author: Robert Breker <rbre...@godaddy.com>
Date: Sun Mar 17 14:43:50 2024 +0000
Enhance IptablesFirewallDriver with remote address groups
This change enhances the IptablesFirewallDriver with support for remote
address groups. Previously, this feature was only available in the
OVSFirewallDriver. This commit harmonizes the capabilities across both
firewall drivers, and by inheritance also to
OVSHybridIptablesFirewallDriver.
Background -
The Neutron API allows operators to configure remote address groups [1],
however the OVSHybridIptablesFirewallDriver and IptablesFirewallDriver do
not implement these remote group restrictions. When configuring security
group rules with remote address groups, connections get enabled
based on other rule parameters, ignoring the configured remote address
group restrictions.
This behaviour undocumented, and may lead to more-open-than-configured
network
access.
Closes-Bug: #2058138
Change-Id: I76b3cb46ee603fa5e829537af41316bb42a6f30f
** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/2058138
Title:
Neutron OVSHybridIptablesFirewallDriver and IptablesFirewallDriver
don't enforce Remote address groups
Status in neutron:
Fix Released
Status in OpenStack Security Advisory:
Incomplete
Bug description:
High level description -
The Neutron API allows operators to configure remote address groups [1],
however the OVSHybridIptablesFirewallDriver and IptablesFirewallDriver do not
implement these remote group restrictions. When configuring security group
rules with remote address groups, connections get enabled based on other rule
parameters, ignoring the configured remote address group restrictions.
This behaviour undocumented, and may lead to more-open-than-configured
network access.
Background -
Remote address groups enable specifying rules that target many CIDRs
efficiently. In line with the remote security group support, this
should be implemented through the use of hashed ipsets in case of the
IptablesFirewallDriver.
Pre-conditions -
* Using OVSHybridIptablesFirewallDriver or IptablesFirewallDriver
* Configured remote Address Groups.
Version -
All OpenStack versions with remote address group support are impacted. We
noticed it on 2024.1.
[1] https://docs.openstack.org/python-
openstackclient/latest/cli/command-objects/address-group.html
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