Description
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.
References (4)
Core 4
Core References
Product, Vendor Advisory x_refsource_misc
https://www.hashicorp.com/blog/category/consul
Release Notes, Third Party Advisory x_refsource_confirm
https://github.com/hashicorp/consul/releases/tag/v1.10.1
Vendor Advisory x_refsource_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
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202208-09
Scores
CVSS v3
7.5
EPSS
0.0076
EPSS Percentile
73.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
Status
published
Products (2)
hashicorp/consul
0 - 1.10.1Go
hashicorp/consul
1.9.0 - 1.9.8 (2 CPE variants)
Published
Jul 17, 2021
Tracked Since
Feb 18, 2026