CVE-2018-19653: HashiCorp Consul can use cleartext agent-to-agent RPC communication

May 14, 2022 (updated June 9, 2023)

HashiCorp Consul 0.5.1 through 1.4.0 can use cleartext agent-to-agent RPC communication because the verify_outgoing setting is improperly documented. NOTE: the vendor has provided reconfiguration steps that do not require a software upgrade.

References

github.com/advisories/GHSA-4qvx-qq5w-695p
github.com/hashicorp/consul/commit/b64e8b262f80397eab4f39c6ae7e14683cb9f55c
github.com/hashicorp/consul/pull/5069
groups.google.com/forum/
nvd.nist.gov/vuln/detail/CVE-2018-19653

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