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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855Vendor Advisory
- https://github.com/hashicorp/consul/releases/tag/v1.10.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202208-09Third Party Advisory
- https://www.hashicorp.com/blog/category/consulProduct, Vendor Advisory
- https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855Vendor Advisory
- https://github.com/hashicorp/consul/releases/tag/v1.10.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202208-09Third Party Advisory
- https://www.hashicorp.com/blog/category/consulProduct, Vendor Advisory
Timeline
- Published
- Jul 17, 2021
- Last modified
- Jun 17, 2026
- NVD status
- Modified