CVE-2019-10876: Neutron OpenStack Neutron Overlapping Security Group Vulnerability

HIGH
Advisory Identifier: GHSA-jr9m-v5qh-mh2j
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CVSS 6.5
Published
Advisory Summary

CVE-2019-10876 is a HIGH (CVSS 6.5) openstack neutron overlapping security group vulnerability (General Security Weakness) affecting Neutron libraries in the PyPI ecosystem. The issue involves openstack neutron overlapping security group rules prevents compute node network configuration. Remediation is available by upgrading affected packages to version 13.0.3, 11.0.7, 12.0.6.

CVE-2019-10876 at a Glance

CVE Identifier CVE-2019-10876
GHSA Identifier GHSA-jr9m-v5qh-mh2j
Severity HIGH
CVSS v3.1 Base Score 6.5
CWE Classification General Security Weakness
Affected Product Neutron
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-10876

To remediate this vulnerability, upgrade all affected Neutron dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

neutron fixed: 13.0.3 
pip install neutron>=13.0.3
neutron fixed: 11.0.7 
pip install neutron>=11.0.7
neutron fixed: 12.0.6 
pip install neutron>=12.0.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show neutron

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2019-10876, inspect your installed packages using pip:

pip show neutron

Analyze the terminal output to locate any version of Neutron in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 13.0.3), your application is affected.

Note: The pip show neutron command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Neutron, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2019-10876 Affected Neutron Versions

3 component(s)
Fixed Versions:
13.0.311.0.712.0.6
Product / Package Ecosystem Affected Versions Fixed Version
neutron
pypi/neutron
PyPI
≥ 13.0.0
< 13.0.3
13.0.3
neutron
pypi/neutron
PyPI
≥ 11.0.0
< 11.0.7
11.0.7
neutron
pypi/neutron
PyPI
≥ 12.0.0
< 12.0.6
12.0.6

References

NVD — CVE-2019-10876 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10876
access.redhat.com/errata/rhsa-2019:08... WEB
https://access.redhat.com/errata/RHSA-2019:0879
access.redhat.com/errata/rhsa-2019:09... WEB
https://access.redhat.com/errata/RHSA-2019:0935
bugs.launchpad.net/ossa/+bug/1813007 WEB
https://bugs.launchpad.net/ossa/+bug/1813007
Neutron Source Repository REPOSITORY
https://github.com/openstack/neutron
Neutron Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2019-189.yaml
review.openstack.org/ WEB
https://review.openstack.org/#/q/topic:bug/1813007
Neutron Security Information SECURITY
https://security.openstack.org/ossa/OSSA-2019-002.html
Neutron Security Information SECURITY
http://www.openwall.com/lists/oss-security/2019/04/09/2

Frequently Asked Questions

What is CVE-2019-10876?
CVE-2019-10876 is a security vulnerability in Neutron involving OpenStack Neutron overlapping security group rules prevents compute node network configuration under General Security Weakness.
Which Neutron versions are affected?
Affected versions include releases prior to 13.0.3, 11.0.7, 12.0.6 across affected packages: neutron.
What version fixes CVE-2019-10876?
Upgrading to 13.0.3, 11.0.7, 12.0.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is neutron affected?
Yes, neutron is affected in releases prior to 13.0.3, 11.0.7, 12.0.6. Upgrade your dependency to 13.0.3, 11.0.7, 12.0.6 or later.
What is the CVSS score of CVE-2019-10876?
CVE-2019-10876 has a CVSS v3.1 base score of 6.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2019-10876?
CVE-2019-10876 is classified under General Security Weakness.
How can I check PyPI dependencies for CVE-2019-10876?
Run the dependency tree command: 'pip show neutron'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jr9m-v5qh-mh2j",
  "modified" : "2024-10-07T14:49:46Z",
  "published" : "2022-05-13T01:07:34Z",
  "aliases" : [ "CVE-2019-10876" ],
  "summary" : "OpenStack Neutron overlapping security group rules prevents compute node network configuration",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "neutron"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.0.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "neutron"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.0.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "neutron"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10876"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2019:0879"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2019:0935"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/ossa/+bug/1813007"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openstack/neutron"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2019-189.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://review.openstack.org/#/q/topic:bug/1813007"
  }, {
    "type" : "WEB",
    "url" : "https://security.openstack.org/ossa/OSSA-2019-002.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2019/04/09/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-08T18:54:13Z",
    "nvd_published_at" : "2019-04-05T05:29:00Z"
  }
}