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HashiCorp Consul vulnerable to Origin Validation Error

High severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Jun 9, 2023

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

< 1.4.4

Patched versions

1.4.4

Description

HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication. In other words, the product behaves as if verify_server_hostname were set to false, even when it is actually set to true. This is fixed in 1.4.4.

References

Published by the National Vulnerability Database Mar 26, 2019
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jun 9, 2023
Last updated Jun 9, 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
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:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.292%
(70th percentile)

Weaknesses

CVE ID

CVE-2019-9764

GHSA ID

GHSA-q7fx-wm2p-qfj8

Source code

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