CVE-2018-14636 Information

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 Vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

https://bugs.launchpad.net/neutron/+bug/1734320 https://bugs.launchpad.net/neutron/+bug/1767422 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14636

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3