ossa/ossa/OSSA-2019-004.yaml

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YAML

date: 2019-08-29
id: OSSA-2019-004
title: 'Ageing time of 0 disables linuxbridge MAC learning'
description: >
James Denton with Rackspace reported a vulnerability in os-vif, the
Nova/Neutron network integration library. A hard-coded MAC ageing
time of 0 disables MAC learning in linuxbridge, forcing obligatory
Ethernet flooding for non-local destinations which both impedes
network performance and allows users to possibly view the content of
packets for instances belonging to other tenants sharing the same
network. Only deployments using the linuxbridge backend are
affected.
affected-products:
- product: 'os-vif'
version: '>=1.15.0<1.15.2, 1.16.0'
vulnerabilities:
- cve-id: CVE-2019-15753
reporters:
- name: 'James Denton'
affiliation: 'Rackspace'
reported:
- CVE-2019-15753
issues:
links:
- https://launchpad.net/bugs/1837252
reviews:
train:
- https://review.opendev.org/672834
stein:
- https://review.opendev.org/678098
type: gerrit