CVE-2019-10876
OpenStack Neutron overlapping security group rules prevents compute node network configuration
6.5
MEDIUM
CVSS 3.1
EPSS 0.62%
Description
An issue was discovered in OpenStack Neutron 11.x before 11.0.7, 12.x before 12.0.6, and 13.x before 13.0.3. By creating two security groups with separate/overlapping port ranges, an authenticated user may prevent Neutron from being able to configure networks on any compute nodes where those security groups are present, because of an Open vSwitch (OVS) firewall KeyError. All Neutron deployments utilizing neutron-openvswitch-agent are affected.
How to fix CVE-2019-10876
To remediate CVE-2019-10876, upgrade the affected package to a fixed version below.
- —upgrade to 2:13.0.2-15 or later
- —upgrade to 11.0.7 or later
- —upgrade to 12.0.6 or later
Is CVE-2019-10876 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2:13.0.2-15
- >= 11.0.0, < 11.0.7
- >= 12.0.0, < 12.0.6, from 0, < 11.0.7, >= 13.0.0, < 13.0.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |