kritisch
CVE-2019-15753
python-os-vif: Hard-coded MAC aging time of 0 disables MAC learning in linuxbridge
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.
Einstufung nach Quelle
NVD9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GHSA9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Red Hat5.2CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD, GHSA. Niedriger laut Red Hat (mittel), Ubuntu (niedrig).
Beschreibung
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.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| pip::GitHub Security Advisory pip | os-vif | 1.15.2, 1.17.0 |
| debian 11 | python-os-vif | 1.15.2-1 |
| debian 12 | python-os-vif | 1.15.2-1 |
| debian 13 | python-os-vif | 1.15.2-1 |
| debian 14 | python-os-vif | 1.15.2-1 |
| echo | python-os-vif | 1.15.2-1 |
| Red Hat | python3-os-vif | kein Fix angegeben |
| ubuntu 20.04-ESM | python-os-vif | kein Fix angegeben |
| ubuntu 22.04 | python-os-vif | kein Fix angegeben |
Referenzen
- http://www.openwall.com/lists/oss-security/2019/08/29/2
- https://access.redhat.com/security/cve/CVE-2019-15753
- https://github.com/openstack/os-vif
- https://github.com/openstack/os-vif/commit/655c83d706f5de8a8cf23430782e065219297aef
- https://github.com/openstack/os-vif/commit/ec9d5430300c908ea9a1c64151eee7af522a44e7
- https://launchpad.net/bugs/1837252
- https://nvd.nist.gov/vuln/detail/CVE-2019-15753
- https://review.opendev.org/672834