Vulnerability Monitor

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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.

Published

2021-07-17T18:15:07.820

Last Modified

2024-11-21T06:13:19.590

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	hashicorp	consul	< 1.9.8	Yes
Application	hashicorp	consul	< 1.9.8	Yes
Application	hashicorp	consul	< 1.10.1	Yes
Application	hashicorp	consul	< 1.10.1	Yes

References

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 ([email protected])
https://github.com/hashicorp/consul/releases/tag/v1.10.1 Release Notes, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202208-09 Third Party Advisory ([email protected])
https://www.hashicorp.com/blog/category/consul Product, Vendor Advisory ([email protected])
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 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/hashicorp/consul/releases/tag/v1.10.1 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202208-09 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.hashicorp.com/blog/category/consul Product, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)