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Fencer Intel
medium 6.5

CVE-2019-10876 json

OpenStack Neutron overlapping security group rules prevents compute node network configuration

published 7y ago modified 4mo ago also GHSA-jr9m-v5qh-mh2j , PYSEC-2019-189 , EUVD-2019-0089

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi neutron 11.0.7, 12.0.6, 13.0.3
  • openstack neutron 11.0.7, 12.0.6, 13.0.3
  • neutron Debian 14, Debian 13, Debian 12 2:13.0.2-15

debian advisories DEBIAN-CVE-2019-10876

  • neutron Ubuntu 18.04 LTS 2:12.0.5-0ubuntu4

ubuntu advisories UBUNTU-CVE-2019-10876

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openstack-neutron openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • python-neutron openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-ml2 openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-common openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-rpc-server openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-linuxbridge openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-openvswitch openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost
  • openstack-neutron-macvtap-agent openstack 14 1:13.0.3-0.20190313155649.00b63be.el7ost

red hat advisories RHSA-2019:0879RHSA-2019:0935

  • crowbar OpenStack Cloud Crowbar 9 6.0+git.1561125496.b7508480-3.6.5
  • grafana OpenStack Cloud Crowbar 9, OpenStack Cloud 9 5.3.3-3.3.1
  • ardana-db OpenStack Cloud 9 9.0+git.1560868957.42bcb70-3.3.5
  • ardana-mq OpenStack Cloud 9 9.0+git.1560214193.fc0378b-3.3.5
  • ardana-ses OpenStack Cloud 9 9.0+git.1554740095.48252d3-3.3.5
  • ardana-tls OpenStack Cloud 9 9.0+git.1557220381.5641a2e-3.3.5
  • crowbar-ha OpenStack Cloud Crowbar 9 6.0+git.1560951093.4af1ee5-3.3.7
  • ardana-heat OpenStack Cloud 9 9.0+git.1559036788.b727b53-3.3.5

suse advisories SUSE-SU-2019:2046-1SUSE-SU-2019:1862-1

Is CVE-2019-10876 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-10876 updated cvss 7.5

openstack-neutron: DOS via broken port range merging in security group

  • Red Hat OpenStack Platform 13.0 python-neutron 12.0.5-11.el7ost, openstack-neutron 12.0.5-11.el7ost, openstack-neutron-ml2 12.0.5-11.el7ost, openstack-neutron-common 12.0.5-11.el7ost, openstack-neutron-rpc-server 12.0.5-11.el7ost, openstack-neutron-linuxbridge 12.0.5-11.el7ost, +4 more
    fixed: vendor fix RHSA-2019:0935
  • Red Hat OpenStack Platform 14.0 python-neutron 13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron 13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-ml2 13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-common 13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-rpc-server 13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-linuxbridge 13.0.3-0.20190313155649.00b63be.el7ost, +4 more
    fixed: vendor fix RHSA-2019:0879
  • Red Hat OpenStack Platform 8 (Liberty) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-cisco, openstack-neutron-nuage, +16 more Red Hat OpenStack Platform 9 (Mitaka) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, +6 more Red Hat OpenStack Platform 10 (Newton) python-neutron, openstack-neutron, python-neutron-tests, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, +5 more Red Hat OpenStack Platform 15 (Stein) python3-neutron, openstack-neutron, openstack-neutron-ml2, openstack-neutron-common, openstack-neutron-rpc-server, openstack-neutron-bgp-dragent, +5 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.73% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi neutron
>=11.0.0, <11.0.7
>=12.0.0, <12.0.6
>=13.0.0, <13.0.3
<11.0.7
11.0.7
12.0.6
13.0.3

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.