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HashiCorp Consul does not properly validate node or segment names prior to usage in JWT claim assertions

High severity GitHub Reviewed Published Sep 25, 2022 to the GitHub Advisory Database • Updated Apr 22, 2024

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

>= 1.8.1, < 1.11.9
>= 1.12.0, < 1.12.5
>= 1.13.0, < 1.13.2

Patched versions

1.11.9
1.12.5
1.13.2

Description

HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 did not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2.

References

Published by the National Vulnerability Database Sep 23, 2022
Published to the GitHub Advisory Database Sep 25, 2022
Reviewed Apr 2, 2024
Last updated Apr 22, 2024

Severity

High

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High

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:L/UI:N/S:U/C:L/I:N/A:H

EPSS score

0.237%
(61st percentile)

Weaknesses

CVE ID

CVE-2021-41803

GHSA ID

GHSA-hr3v-8cp3-68rf

Source code

Credits

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