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  5. CVE-2021-40797

CVE-2021-40797: OpenStack Neutron Denial of Service vulnerability

May 24, 2022 (updated September 25, 2024)

An issue was discovered in the routes middleware in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.

References

  • github.com/advisories/GHSA-cpx3-696p-3cw9
  • github.com/openstack/neutron
  • github.com/openstack/neutron/commit/e610a5eb9e71aa2549fb11e2139370d227787da2
  • github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-329.yaml
  • launchpad.net/bugs/1942179
  • nvd.nist.gov/vuln/detail/CVE-2021-40797
  • security.openstack.org/ossa/OSSA-2021-006.html

Code Behaviors & Features

Detect and mitigate CVE-2021-40797 with GitLab Dependency Scanning

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Affected versions

All versions before 16.4.1, all versions starting from 17.0.0 before 17.2.1, all versions starting from 18.0.0 before 18.1.1

Fixed versions

  • 16.4.1
  • 17.2.1
  • 18.1.1

Solution

Upgrade to versions 16.4.1, 17.2.1, 18.1.1 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-772: Missing Release of Resource after Effective Lifetime

Source file

pypi/neutron/CVE-2021-40797.yml

Spotted a mistake? Edit the file on GitLab.

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