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HashiCorp Consul Access Restriction Bypass

High severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Sep 28, 2023

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

>= 1.4.0, < 1.4.3

Patched versions

1.4.3

Description

HashiCorp Consul (and Consul Enterprise) 1.4.x before 1.4.3 allows a client to bypass intended access restrictions and obtain the privileges of one other arbitrary token within secondary datacenters, because a token with literally "" as its secret is used in unusual circumstances.

References

Published by the National Vulnerability Database Mar 5, 2019
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jul 19, 2023
Last updated Sep 28, 2023

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
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:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.217%
(60th percentile)

Weaknesses

CVE ID

CVE-2019-8336

GHSA ID

GHSA-fhm8-cxcv-pwvc

Source code

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