CVE-2019-15753
First published: Wed Aug 28 2019(Updated: )
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`.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenStack os-vif | >=1.15.0<1.15.2 | |
| OpenStack os-vif | =1.16.0 | |
| pip/os-vif | =1.16.0 | 1.17.0 |
| pip/os-vif | >=1.15.0<1.15.2 | 1.15.2 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2019/08/29/2
- https://launchpad.net/bugs/1837252
- https://review.opendev.org/672834
- https://review.opendev.org/678098
- https://security.openstack.org/ossa/OSSA-2019-004.html
- https://nvd.nist.gov/vuln/detail/CVE-2019-15753
- https://github.com/openstack/os-vif/commit/655c83d706f5de8a8cf23430782e065219297aef
- https://github.com/openstack/os-vif/commit/ec9d5430300c908ea9a1c64151eee7af522a44e7
- https://github.com/advisories/GHSA-mcpw-cp35-p3h8 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this OpenStack os-vif vulnerability?
The vulnerability ID for this OpenStack os-vif vulnerability is CVE-2019-15753.
What is the severity of CVE-2019-15753?
The severity of CVE-2019-15753 is critical with a CVSS score of 9.1.
What is the description of CVE-2019-15753?
CVE-2019-15753 is a vulnerability in OpenStack os-vif 1.15.x before 1.15.2 and 1.16.0 that enables MAC learning in linuxbridge with a hard-coded MAC aging time of 0, which can lead to network performance issues and potential packet snooping.
How does CVE-2019-15753 impact network performance?
CVE-2019-15753 can impede network performance due to obligatory Ethernet flooding of non-local destinations.
How can I fix CVE-2019-15753?
To fix CVE-2019-15753, update OpenStack os-vif to version 1.15.2 or higher, or upgrade to version 1.16.0.
- collector/nvd-index
- agent/type
- agent/remedy
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-mcpw-cp35-p3h8
- alias/CVE-2019-15753
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- vendor/openstack
- canonical/openstack os-vif
- version/openstack os-vif/1.15.0
- version/openstack os-vif/1.16.0
- package-manager/pip