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Hashicorp Consul allows user with service:write permissions to patch remote proxy instances

High severity GitHub Reviewed Published Jun 3, 2023 to the GitHub Advisory Database • Updated Sep 26, 2024

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

>= 1.15.0, < 1.15.3

Patched versions

1.15.3

Description

Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions configured via service-defaults to patch remote proxy instances that target the configured service, regardless of whether the user has permission to modify the service(s) corresponding to those modified proxies.

References

Published by the National Vulnerability Database Jun 2, 2023
Published to the GitHub Advisory Database Jun 3, 2023
Reviewed Jun 6, 2023
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
High
User interaction
None
Scope
Changed
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:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

EPSS score

0.047%
(19th percentile)

Weaknesses

CVE ID

CVE-2023-2816

GHSA ID

GHSA-rqjq-ww83-wv5c

Source code

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