CVE-2021-36213
HIGH7.5EPSS 0.77%HashiCorp Consul L7 deny intention results in an allow action
Published: 7/19/2021Modified: 2/4/2026
Description
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.
Affected packages (3)
- Bitnami/consul>= 1.9.0, < 1.9.8, >= 1.10.0, < 1.10.1
- Go/github.com/hashicorp/consulfrom 0, < 1.10.1
- Go/github.com/hashicorp/consulfrom 0, < 1.10.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (7)
- ADVISORYhttps://github.com/advisories/GHSA-8h2g-r292-j8xh
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-36213
- WEBhttps://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855
- WEBhttps://github.com/hashicorp/consul
- WEBhttps://github.com/hashicorp/consul/releases/tag/v1.10.1
- WEBhttps://security.gentoo.org/glsa/202208-09
- WEBhttps://www.hashicorp.com/blog/category/consul