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Hashicorp Nomad ACLs Cannot Deny Access to Workload’s Own Variables

Moderate severity GitHub Reviewed Published Jul 6, 2023 to the GitHub Advisory Database • Updated Jul 6, 2023

Package

gomod github.com/hashicorp/nomad (Go)

Affected versions

>= 1.4.0, < 1.4.6
= 1.5.0

Patched versions

1.4.6
1.5.1

Description

A vulnerability was identified in Nomad and Nomad Enterprise (“Nomad”) such that a deny ACL capability could not be applied to a workload’s own variables. If included, the Nomad ACL system will silently fail to block access. This vulnerability, CVE-2023-1296, was fixed in Nomad 1.4.6 and 1.5.1.

References

Published by the National Vulnerability Database Mar 14, 2023
Published to the GitHub Advisory Database Jul 6, 2023
Reviewed Jul 6, 2023
Last updated Jul 6, 2023

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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
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:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.061%
(27th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2023-1296

GHSA ID

GHSA-hhvx-8755-4cvw

Source code

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