vulnerability
Ubuntu: (CVE-2019-15753): python-os-vif vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:N/A:P) | Aug 28, 2019 | Jun 26, 2025 | Jun 26, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
Aug 28, 2019
Added
Jun 26, 2025
Modified
Jun 26, 2025
Description
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.
Solution
no-fix-ubuntu-package
References
- CVE-2019-15753
- https://attackerkb.com/topics/CVE-2019-15753
- URL-http://www.openwall.com/lists/oss-security/2019/08/29/2
- URL-https://review.opendev.org/672834
- URL-https://review.opendev.org/678098
- URL-https://security.openstack.org/ossa/OSSA-2019-004.html
- URL-https://www.cve.org/CVERecord?id=CVE-2019-15753
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