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Fencer Intel
medium 5.3

CVE-2018-14636 json

Openstack Neutron vulnerable to eavesdropping on private traffic

published 2018-09-10 8 y ago modified 2026-06-17 4 mo ago also GHSA-8q95-jj7p-x93x , PYSEC-2018-94 , EUVD-2018-0103

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instance's port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.

Patch / fix

  • pypi neutron 11.0.5, 12.0.3, 13.0.0.0b2
  • neutron Debian 14, Debian 13, Debian 12 2:13.0.0-1

debian advisories DEBIAN-CVE-2018-14636

  • neutron Ubuntu 18.04 LTS 2:12.0.3-0ubuntu1

ubuntu advisories UBUNTU-CVE-2018-14636

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

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-2018-14636 updated cvss 5.3

openstack-neutron: eavesdropping private traffic due to trunk ports after live migration

  • 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 Red Hat OpenStack Platform 10 (Newton) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, +5 more Red Hat OpenStack Platform 12 (Pike) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, +5 more Red Hat OpenStack Platform 13 (Queens) python-neutron, openstack-neutron, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, openstack-neutron-linuxbridge, +4 more 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
    +2 more products
    Red Hat OpenStack Platform 16.2 python3-neutron, openstack-neutron, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, openstack-neutron-linuxbridge, +4 more Red Hat OpenStack Platform 17.1 python3-neutron, openstack-neutron, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, openstack-neutron-linuxbridge, +6 more
    affected: no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 18.0 openstack-neutron
    affected: no fix available “Fix deferred”
  • Red Hat Fuse 7 openstack-neutron
    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

1.17% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N
GitHub 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi neutron
>=13.0.0.0b1, <13.0.0.0b2
>=12.0.0, <12.0.3
>=11.0.0, <11.0.5
>=7.0.0, <11.0.5
13.0.0.0b2
12.0.3
11.0.5

Affected products

  • The Openstack Project openstack-neutron

Classification

Weakness
  • CWE-300 Channel Accessible by Non-Endpoint

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.