# CVE-2018-14636: Openstack Neutron vulnerable to eavesdropping on private traffic

Source: https://junglewise.ai/threats/cve-2018-14636-openstack-neutron-vulnerable-to-eavesdropping-on-private-traffic  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2018-09-10  
License: CC BY 4.0 with a link back

CVE-2018-14636 · Severity: low · CVSS 3 · Published 2018-09-10

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.

Technologies: [neutron (PyPI)](https://junglewise.ai/threats/technologies/pypi-neutron). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2018-14636 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-14636 being exploited in the wild.

**How severe is CVE-2018-14636?** Low severity, with a CVSS score of 3, published 10 September 2018.

**Which products and versions are affected?** neutron (PyPI) ECOSYSTEM:introduced=13.0.0.0b1,fixed=13.0.0.0b2, ECOSYSTEM:introduced=7.0.0,fixed=11.0.5,introduced=12.0.0,fixed=12.0.3.

**Is there a fix for CVE-2018-14636?** Yes. neutron (PyPI): upgrade to 12.0.3, 13.0.0.0b2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-14636?** Check whether you run neutron (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- neutron (PyPI): upgrade to 12.0.3, 13.0.0.0b2 or later

  ```sh
  pip install "neutron>=13.0.0.0b2"
  ```


## Affected products

- neutron (PyPI) ECOSYSTEM:introduced=13.0.0.0b1,fixed=13.0.0.0b2, ECOSYSTEM:introduced=7.0.0,fixed=11.0.5,introduced=12.0.0,fixed=12.0.3

## Identifiers

- CVE-2018-14636
- GHSA-8q95-jj7p-x93x
- PYSEC-2018-94

## Related threats

- [PYSEC-2026-1693 - OpenStack Neutron can use an incorrect ID during policy enforcement](https://junglewise.ai/threats/cve-2024-53916-openstack-neutron-can-use-an-incorrect-id-during-policy)
- [PYSEC-2026-1694 - Denial of service in neutron](https://junglewise.ai/threats/cve-2023-3637-denial-of-service-in-neutron)
- [PYSEC-2026-855 - openstack-neutron uncontrolled resource consumption flaw](https://junglewise.ai/threats/cve-2022-3277-openstack-neutron-uncontrolled-resource-consumption-flaw)
- [PYSEC-2026-851 - OpenStack Neutron Improper Authentication vulnerability](https://junglewise.ai/threats/cve-2014-0056-openstack-neutron-improper-authentication-vulnerability)
- [PYSEC-2026-853 - OpenStack Neutron Race condition vulnerability](https://junglewise.ai/threats/cve-2015-5240-openstack-neutron-race-condition-vulnerability)