CVE-2021-36213

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-36213
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855 Vendor Advisory
https://github.com/hashicorp/consul/releases/tag/v1.10.1 Release Notes Third Party Advisory
https://security.gentoo.org/glsa/202208-09 Third Party Advisory
https://www.hashicorp.com/blog/category/consul Product Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
History

14 Sep 2022, 20:58

Type Values Removed Values Added
References (GENTOO) https://security.gentoo.org/glsa/202208-09 - (GENTOO) https://security.gentoo.org/glsa/202208-09 - Third Party Advisory

10 Aug 2022, 20:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202208-09 -

29 Jul 2021, 13:55

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
References
  • (CONFIRM) https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855 - Vendor Advisory
References (CONFIRM) https://github.com/hashicorp/consul/releases/tag/v1.10.1 - (CONFIRM) https://github.com/hashicorp/consul/releases/tag/v1.10.1 - Release Notes, Third Party Advisory
References (MISC) https://www.hashicorp.com/blog/category/consul - (MISC) https://www.hashicorp.com/blog/category/consul - Product, Vendor Advisory
CWE NVD-CWE-noinfo

19 Jul 2021, 19:15

Type Values Removed Values Added
Summary 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. 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.

17 Jul 2021, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-07-17 18:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-36213

Mitre link : CVE-2021-36213

CVE.ORG link : CVE-2021-36213

JSON object : View

Products Affected

hashicorp

  • consul
CWE
NVD-CWE-noinfo