CVE-2021-36213

Gentoo Linux Security Advisory 202208-09

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

HashiCorp Consul and Consul Enterprise 1.9.0 through 1.10.0 default deny policy with a single L7 application-aware intention deny action cancels out, causing the intention to incorrectly fail open, allowing L4 traffic. Fixed in 1.9.8 and 1.10.1.

La política de denegación por defecto de HashiCorp Consul y Consul Enterprise desde la versión 1.9.0 hasta la version 1.10.0 con una única acción de denegación de intención consciente de la aplicación L7 se anula, lo que provoca que la intención falle incorrectamente al abrirse, permitiendo el tráfico L4. Corregido en las versiones 1.9.8 y 1.10.1.

Multiple vulnerabilities have been discovered in HashiCorp Consul, the worst of which could result in denial of service. Versions less than 1.9.17 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-07 CVE Reserved
2021-07-17 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source
https://github.com/hashicorp/consul/releases/tag/v1.10.1	Release Notes

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855	2022-09-14
https://security.gentoo.org/glsa/202208-09	2022-09-14
https://www.hashicorp.com/blog/category/consul	2022-09-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Hashicorp Search vendor "Hashicorp"		Consul Search vendor "Hashicorp" for product "Consul"				>= 1.9.0 < 1.9.8 Search vendor "Hashicorp" for product "Consul" and version " >= 1.9.0 < 1.9.8"		-		Affected
Hashicorp Search vendor "Hashicorp"		Consul Search vendor "Hashicorp" for product "Consul"				>= 1.9.0 < 1.9.8 Search vendor "Hashicorp" for product "Consul" and version " >= 1.9.0 < 1.9.8"		enterprise		Affected
Hashicorp Search vendor "Hashicorp"		Consul Search vendor "Hashicorp" for product "Consul"				>= 1.10.0 < 1.10.1 Search vendor "Hashicorp" for product "Consul" and version " >= 1.10.0 < 1.10.1"		-		Affected
Hashicorp Search vendor "Hashicorp"		Consul Search vendor "Hashicorp" for product "Consul"				>= 1.10.0 < 1.10.1 Search vendor "Hashicorp" for product "Consul" and version " >= 1.10.0 < 1.10.1"		enterprise		Affected