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OpenStack Nova uses insecure keystone middleware tmpdir by default

Moderate severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Nov 22, 2024

Package

pip python-keystoneclient (pip)

Affected versions

< 0.2.4

Patched versions

0.2.4

Description

keystone/middleware/auth_token.py in OpenStack Nova Folsom, Grizzly, and Havana uses an insecure temporary directory for storing signing certificates, which allows local users to spoof servers by pre-creating this directory, which is reused by Nova, as demonstrated using /tmp/keystone-signing-nova on Fedora.

References

Published by the National Vulnerability Database Dec 27, 2013
Published to the GitHub Advisory Database May 17, 2022
Reviewed Aug 28, 2023
Last updated Nov 22, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

EPSS score

0.042%
(5th percentile)

Weaknesses

CVE ID

CVE-2013-2030

GHSA ID

GHSA-pxxv-rv32-2qgv

Source code

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