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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Consul | Hashicorp | 1.9.0 (including) | 1.9.8 (excluding) |
| Consul | Hashicorp | 1.10.0 (including) | 1.10.1 (excluding) |
| Consul | Ubuntu | bionic | * |
| Consul | Ubuntu | focal | * |
| Consul | Ubuntu | groovy | * |
| Consul | Ubuntu | hirsute | * |
| Consul | Ubuntu | impish | * |
| Consul | Ubuntu | kinetic | * |
| Consul | Ubuntu | trusty | * |
| Consul | Ubuntu | xenial | * |
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
- https://github.com/hashicorp/consul/releases/tag/v1.10.1
- https://security.gentoo.org/glsa/202208-09
- https://www.hashicorp.com/blog/category/consul
- https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855
- https://github.com/hashicorp/consul/releases/tag/v1.10.1
- https://security.gentoo.org/glsa/202208-09
- https://www.hashicorp.com/blog/category/consul