Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openstack | Neutron | >= 7.0.0, <= 11.0.4 |
Related Weaknesses (CWE)
References
- https://bugs.launchpad.net/neutron/+bug/1734320Issue TrackingThird Party Advisory
- https://bugs.launchpad.net/neutron/+bug/1767422Issue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14636Issue TrackingThird Party Advisory
- https://bugs.launchpad.net/neutron/+bug/1734320Issue TrackingThird Party Advisory
- https://bugs.launchpad.net/neutron/+bug/1767422Issue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14636Issue TrackingThird Party Advisory
FAQ
What is CVE-2018-14636?
CVE-2018-14636 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...
How severe is CVE-2018-14636?
CVE-2018-14636 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14636?
Check the references section above for vendor advisories and patch information. Affected products include: Openstack Neutron.