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CVE-2016-4911: OpenStack Identity Keystone Improper Access Control

May 17, 2022 (updated November 26, 2024)

The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x before 9.0.1 (mitaka) allows remote authenticated users to prevent revocation of a chain of tokens and bypass intended access restrictions by rescoping a token.

References

  • bugs.launchpad.net/keystone/+bug/1577558
  • github.com/advisories/GHSA-f82m-w3p3-cgp3
  • github.com/openstack/keystone
  • github.com/openstack/keystone/commit/0d376025bae61bf5ee19d992c7f336b99ac69240
  • github.com/openstack/keystone/commit/ee1dc941042d1f71699971c5c30566af1b348572
  • github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2016-38.yaml
  • nvd.nist.gov/vuln/detail/CVE-2016-4911
  • review.openstack.org/
  • security.openstack.org/ossa/OSSA-2016-008.html

Code Behaviors & Features

Detect and mitigate CVE-2016-4911 with GitLab Dependency Scanning

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Affected versions

All versions starting from 9.0.0 before 9.0.1

Fixed versions

  • 9.0.1

Solution

Upgrade to version 9.0.1 or above.

Impact 4.3 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-284: Improper Access Control

Source file

pypi/keystone/CVE-2016-4911.yml

Spotted a mistake? Edit the file on GitLab.

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