crítica
CVE-2019-15753
python-os-vif: Hard-coded MAC aging time of 0 disables MAC learning in linuxbridge
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.
Severidad por fuente
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
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, GHSA. Más baja según Red Hat (media), Ubuntu (baja).
Descripción
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.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| 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 | sin corrección indicada |
| ubuntu 20.04-ESM | python-os-vif | sin corrección indicada |
| ubuntu 22.04 | python-os-vif | sin corrección indicada |
Referencias
- 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