In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of 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. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2019-08-28T20:33:39
Updated: 2024-08-05T00:56:22.439Z
Reserved: 2019-08-28T00:00:00
Link: CVE-2019-15753
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-08-28T21:15:10.943
Modified: 2024-11-21T04:29:24.520
Link: CVE-2019-15753
Redhat