Skip to content
Fencer Intel
medium 6.5

CVE-2018-14635 json

OpensStack Neutron Denial of Service Vulnerability

published 8y ago modified 4mo ago also GHSA-x634-34m9-96mp , PYSEC-2018-93 , EUVD-2018-0102

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

When using the Linux bridge ml2 driver, non-privileged tenants are able to create and attach ports without specifying an IP address, bypassing IP address validation. A potential denial of service could occur if an IP address, conflicting with existing guests or routers, is then assigned from outside of the allowed allocation pool. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3 and 11.0.5 are vulnerable.

Patch / fix

  • pypi neutron 11.0.6, 12.0.4, 13.0.0.0b2
  • neutron Debian 14, Debian 13, Debian 12 2:13.0.0-1

debian advisories DEBIAN-CVE-2018-14635

  • neutron Ubuntu 18.04 LTS 2:12.0.3-0ubuntu1

ubuntu advisories UBUNTU-CVE-2018-14635

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openstack-neutron openstack 12 1:11.0.4-6.el7ost
  • python-neutron openstack 12 1:11.0.4-6.el7ost
  • python-neutron-tests openstack 12 1:11.0.4-6.el7ost
  • openstack-neutron-ml2 openstack 12 1:11.0.4-6.el7ost
  • openstack-neutron-common openstack 12 1:11.0.4-6.el7ost
  • openstack-neutron-rpc-server openstack 12 1:11.0.4-6.el7ost
  • openstack-neutron-linuxbridge openstack 12 1:11.0.4-6.el7ost
  • openstack-neutron-openvswitch openstack 12 1:11.0.4-6.el7ost

red hat advisories RHSA-2018:3792RHSA-2018:2715RHSA-2018:2710

Is CVE-2018-14635 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-14635 updated cvss 6.5

openstack-neutron: A router interface out of subnet IP range results in a denial of service

  • Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ibm, openstack-neutron-ml2, openstack-neutron-nec, +19 more Red Hat OpenStack Platform 8 (Liberty) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-cisco, openstack-neutron-nuage, +16 more Red Hat OpenStack Platform 9 (Mitaka) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, +6 more
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 10.0 python-neutron 9.4.1-28.el7ost, openstack-neutron 9.4.1-28.el7ost, python-neutron-tests 9.4.1-28.el7ost, openstack-neutron-ml2 9.4.1-28.el7ost, openstack-neutron-common 9.4.1-28.el7ost, openstack-neutron-rpc-server 9.4.1-28.el7ost, +5 more
    fixed: vendor fix RHSA-2018:2715
  • Red Hat OpenStack Platform 12.0 python-neutron 11.0.4-6.el7ost, openstack-neutron 11.0.4-6.el7ost, python-neutron-tests 11.0.4-6.el7ost, openstack-neutron-ml2 11.0.4-6.el7ost, openstack-neutron-common 11.0.4-6.el7ost, openstack-neutron-rpc-server 11.0.4-6.el7ost, +5 more
    fixed: vendor fix RHSA-2018:3792
  • Red Hat OpenStack Platform 13.0 python-neutron 12.0.3-5.el7ost, openstack-neutron 12.0.3-5.el7ost, openstack-neutron-ml2 12.0.3-5.el7ost, openstack-neutron-common 12.0.3-5.el7ost, openstack-neutron-rpc-server 12.0.3-5.el7ost, openstack-neutron-linuxbridge 12.0.3-5.el7ost, +4 more
    fixed: vendor fix RHSA-2018:2710
  • Red Hat Fuse 7 openstack-neutron Red Hat OpenStack Platform 14 (Rocky) python-neutron, openstack-neutron, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, openstack-neutron-linuxbridge, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.53% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P
GitHub 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi neutron
>=13.0.0.0b1, <13.0.0.0b2
<11.0.6
>=12.0.0, <12.0.4
13.0.0.0b2
11.0.6
12.0.4

Affected products

  • The Openstack Project openstack-neutron

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.