CVE-2021-37219: Improper Certificate Validation

September 7, 2021 (updated September 8, 2022)

HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.8.15, 1.9.9 and 1.10.2.

References

discuss.hashicorp.com/t/hcsec-2021-22-consul-raft-rpc-privilege-escalation/29024
github.com/advisories/GHSA-ccw8-7688-vqx4
nvd.nist.gov/vuln/detail/CVE-2021-37219
www.hashicorp.com/blog/category/consul

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