CVE-2018-14636
Openstack Neutron vulnerable to eavesdropping on private traffic
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2018-14636- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-300
- Updated
- 2026-11-02
EUVDEUVD-2018-0103
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.
- Record
EUVD-2018-0103- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8q95-jj7p-x93x
Openstack Neutron vulnerable to eavesdropping on private traffic
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.
- Record
GHSA-8q95-jj7p-x93x- CVSS 4.0
- 6.0 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2018-14636- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:P/I:N/A:N - Weakness
- CWE-300
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2018-14636- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-14636
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.
- Record
DEBIAN-CVE-2018-14636- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-8q95-jj7p-x93x
Openstack Neutron vulnerable to eavesdropping on private traffic
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.
- Record
GHSA-8q95-jj7p-x93x- CVSS 4.0
- 6.0 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-14636
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.
- Record
UBUNTU-CVE-2018-14636- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVPYSEC-2018-94 No score
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.
- Record
PYSEC-2018-94- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
neutronPyPI |
13.0.0.0b1 to 13.0.0.0b1 | 13.0.0.0b2 |
neutronPyPI |
12.0.0 up to 12.0.3 | 12.0.3 |
neutronPyPI |
11.0.0 up to 11.0.5 | 11.0.5 |
neutronDebian:12 |
before 2:13.0.0-1 | 2:13.0.0-1 |
neutronDebian:13 |
before 2:13.0.0-1 | 2:13.0.0-1 |
neutronDebian:14 |
before 2:13.0.0-1 | 2:13.0.0-1 |
neutronPyPI |
13.0.0.0b1 up to 13.0.0.0b2 | 13.0.0.0b2 |
neutronPyPI |
12.0.0 up to 12.0.3, plus listed versions 12.0.112.0.2 |
12.0.3 |
neutronPyPI |
11.0.0 up to 11.0.5, plus listed versions 11.0.311.0.4 |
11.0.5 |
neutronPyPI |
7.0.0 up to 11.0.5, 12.0.0 up to 12.0.3, plus listed versions 10.0.510.0.610.0.711.0.311.0.412.0.112.0.2 |
11.0.512.0.3 |
neutronUbuntu:16.04:LTS |
All versions, plus listed versions 2:7.0.0-0ubuntu12:8.0.0~b1-0ubuntu22:8.0.0~b2-0ubuntu42:8.0.0~b2-0ubuntu52:8.0.0~b2-0ubuntu7 Show 20 moreShow less2:8.0.0~b3-0ubuntu12:8.0.0~rc1-0ubuntu12:8.0.0-0ubuntu12:8.1.0-0ubuntu0.16.04.22:8.1.2-0ubuntu12:8.2.0-0ubuntu12:8.3.0-0ubuntu12:8.3.0-0ubuntu1.12:8.3.0-0ubuntu1.22:8.4.0-0ubuntu12:8.4.0-0ubuntu22:8.4.0-0ubuntu32:8.4.0-0ubuntu42:8.4.0-0ubuntu52:8.4.0-0ubuntu62:8.4.0-0ubuntu7.12:8.4.0-0ubuntu7.22:8.4.0-0ubuntu7.32:8.4.0-0ubuntu7.42:8.4.0-0ubuntu7.5 |
None known |
neutronUbuntu:18.04:LTS |
before 2:12.0.3-0ubuntu1, plus listed versions 2:11.0.1-0ubuntu12:12.0.0~b1-0ubuntu12:12.0.0~b1-0ubuntu22:12.0.0~b2-0ubuntu12:12.0.0~b3-0ubuntu1 Show 12 moreShow less2:12.0.0~rc1-0ubuntu12:12.0.0~rc2-0ubuntu12:12.0.0-0ubuntu12:12.0.0-0ubuntu1.12:12.0.0-0ubuntu1.22:12.0.0-0ubuntu1.32:12.0.0-0ubuntu1.42:12.0.0-0ubuntu22:12.0.0-0ubuntu32:12.0.1-0ubuntu12:12.0.1-0ubuntu1.12:12.0.2-0ubuntu1 |
2:12.0.3-0ubuntu1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-14636 is a medium vulnerability (CVSS 5.3) in Openstack Neutron, published September 10, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. Fixed in neutron 13.0.0.0b2.