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.
Advisories
Source ID Title
EUVD EUVD EUVD-2022-4542 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.
Github GHSA Github GHSA GHSA-mcpw-cp35-p3h8 OpenStack os-vif Ageing time of 0 disables linuxbridge MAC learning
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T00:56:22.439Z

Reserved: 2019-08-28T00:00:00

Link: CVE-2019-15753

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-08-28T21:15:10.943

Modified: 2024-11-21T04:29:24.520

Link: CVE-2019-15753

cve-icon Redhat

Severity : Moderate

Publid Date: 2019-08-28T00:00:00Z

Links: CVE-2019-15753 - Bugzilla

cve-icon OpenCVE Enrichment

No data.