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Consul JWT Auth in L7 Intentions Allow for Mismatched Service Identity and JWT Providers

High severity GitHub Reviewed Published Aug 9, 2023 to the GitHub Advisory Database • Updated Sep 26, 2024

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

= 1.16.0

Patched versions

1.16.1

Description

A vulnerability was identified in Consul such that using JWT authentication for service mesh incorrectly allows/denies access regardless of service identities. This vulnerability, CVE-2023-3518, affects Consul 1.16.0 and was fixed in 1.16.1.

References

Published by the National Vulnerability Database Aug 9, 2023
Published to the GitHub Advisory Database Aug 9, 2023
Reviewed Apr 1, 2024
Last updated Sep 26, 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
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

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:C/C:L/I:L/A:L

EPSS score

0.069%
(32nd percentile)

Weaknesses

CVE ID

CVE-2023-3518

GHSA ID

GHSA-9rhf-q362-77mx

Source code

Credits

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