RHEL 7 : openstack-neutron (RHSA-2018:2715)

medium Nessus Plugin ID 210321

Synopsis

The remote Red Hat host is missing a security update for openstack-neutron.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2018:2715 advisory.

OpenStack Networking (neutron) is a pluggable, scalable, and API-driven system that provisions networking services to virtual machines. Its main function is to manage connectivity to and from virtual machines.

Security Fix(es):

* openstack-neutron: A router interface out of subnet IP range results in a denial of service (CVE-2018-14635)

For more details about the security issue, including the impact, a CVSS score, and other related information, refer to the CVE page listed in the References section.

Bug Fix(es):

* A new configuration option bridge_mac_table_size has been added for the neutron OVS agent. This value is set on every Open vSwitch bridge managed by the openvswitch-neutron-agent. The value controls the maximum number of MAC addresses that can be learned on a bridge. The default value for this new option is 50,000, which should be enough for most systems. Values outside a reasonable range (10 to 1,000,000) might be overridden by Open vSwitch. (BZ#1589031)

* Previously, when a VM was destroyed, the IPv6 lease was not removed from dnsmasq lease files due to a missing dhcp_release6 binary.

With this update, the dhcp_release6 binary is now provided in an updated dnsmasq-utils package version.
(BZ#1545006)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL openstack-neutron package based on the guidance in RHSA-2018:2715.

Plugin Details

Severity: Medium

ID: 210321

File Name: redhat-RHSA-2018-2715.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/5/2024

Updated: 11/5/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2018-14635

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:openstack-neutron, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-rpc-server, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-ml2, p-cpe:/a:redhat:enterprise_linux:python-neutron, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-openvswitch, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-common, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-linuxbridge, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-metering-agent, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-sriov-nic-agent, p-cpe:/a:redhat:enterprise_linux:python-neutron-tests, p-cpe:/a:redhat:enterprise_linux:openstack-neutron-macvtap-agent

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 9/17/2018

Vulnerability Publication Date: 9/10/2018

Reference Information

CVE: CVE-2018-14635

CWE: 20

RHSA: 2018:2715

Detections

Analytics