Skip to content

HashiCorp Consul L7 deny intention results in an allow action

High severity GitHub Reviewed Published Jul 19, 2021 to the GitHub Advisory Database • Updated Jan 30, 2023

Package

gomod github.com/hashicorp/consul (Go)

Affected versions

< 1.10.1

Patched versions

1.10.1

Description

In HashiCorp Consul before 1.10.1 (and Consul Enterprise), xds can generate a situation where a single L7 deny intention (with a default deny policy) results in an allow action.

References

Published by the National Vulnerability Database Jul 17, 2021
Reviewed Jul 19, 2021
Published to the GitHub Advisory Database Jul 19, 2021
Last updated Jan 30, 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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
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:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.111%
(45th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2021-36213

GHSA ID

GHSA-8h2g-r292-j8xh

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.