Hashicorp Consul allows user with service:write permissions to patch remote proxy instances
Date: 2023-06
Affected: go/github.com/hashicorp/consul
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2023-2816
CWE: CWE-266
CVSS: 8.7 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N)

Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions configured via service-defaults to patch remote proxy instances that target the configured service, regardless of whether the user has permission to modify the service(s) corresponding to those modified proxies.


Mitigations:

Architectural layers (MAESTRO):