PT-2018-8404 · Openstack · Openstack Neutron

Published

2018-07-26

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Updated

2023-02-12

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CVE-2017-7543

CVSS v3.1

5.9

Medium

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions openstack-neutron versions prior to 7.2.0-12.1 openstack-neutron versions 8.x prior to 8.3.0-11.1 openstack-neutron versions 9.x prior to 9.3.1-2.1 openstack-neutron versions 10.x prior to 10.0.2-1.1
Description A race-condition flaw was discovered where, following a minor overcloud update, neutron security groups were disabled. This resulted in the reset of net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables to 0. The issue could be exploited by an attacker to access exposed tenant VMs and network resources after an update.
Recommendations For versions prior to 7.2.0-12.1, update to version 7.2.0-12.1 or later. For versions 8.x prior to 8.3.0-11.1, update to version 8.3.0-11.1 or later. For versions 9.x prior to 9.3.1-2.1, update to version 9.3.1-2.1 or later. For versions 10.x prior to 10.0.2-1.1, update to version 10.0.2-1.1 or later.

Fix

Race Condition

Weakness Enumeration

Related Identifiers

CVE-2017-7543
GHSA-HVXR-2FVV-C3WQ
RHSA-2017:2447
RHSA-2017:2448
RHSA-2017:2449
RHSA-2017:2450
RHSA-2017:2451
RHSA-2017:2452

Affected Products

Openstack Neutron