What’s Vulnerable › Vulnerabilities

CVE-2019-10876

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-05 · updated 2026-06-17

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.

Affected products

• OpenStack Neutron: from 11.0.0 before 11.0.7; from 12.0.0 before 12.0.6; from 13.0.0 before 13.0.3 — fixed in 11.0.7, 12.0.6, 13.0.3
• OpenStack: 13, 14

How to fix

Upgrade to a fixed version: OpenStack Neutron 11.0.7, 12.0.6, 13.0.3. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2019/04/09/2
• https://access.redhat.com/errata/RHSA-2019:0879
• https://access.redhat.com/errata/RHSA-2019:0935
• https://bugs.launchpad.net/ossa/+bug/1813007
• https://review.openstack.org/#/q/topic:bug/1813007
• https://security.openstack.org/ossa/OSSA-2019-002.html
• http://www.openwall.com/lists/oss-security/2019/04/09/2
• https://access.redhat.com/errata/RHSA-2019:0879
• https://access.redhat.com/errata/RHSA-2019:0935
• https://bugs.launchpad.net/ossa/+bug/1813007
• https://review.openstack.org/#/q/topic:bug/1813007
• https://security.openstack.org/ossa/OSSA-2019-002.html

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