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Cleanup verify_server_hostname mTLS requirement

This commit is contained in:
Kent 'picat' Gruber 2020-11-05 16:27:23 -05:00
parent e0a9e329e5
commit cc58a73716
1 changed files with 8 additions and 8 deletions
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16
website/pages/docs/security/security-models/core.mdx
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@ -95,14 +95,14 @@ environment and adapt these configurations accordingly.
added in Consul 1.0.1.
- [`verify_server_hostname`](/docs/agent/options#verify_server_hostname) - By default this is false, and should be
set to true to require for outgoing TLS connections that the TLS certificate presented by the servers matches
`server.<datacenter>.<domain> hostname`. The default configuration does not verify the hostname of the certificate,
only that it is signed by a trusted CA. This setting is critical to prevent a compromised client agent from being
restarted as a server and having all cluster state including all ACL tokens and Connect CA root keys replicated to
it, and introduced in 0.5.1. From version 0.5.1 to 1.4.0 we documented that `verify_server_hostname` being true
implied verify_outgoing however due to a bug this was not the case so setting only `verify_server_hostname` results
in plaintext communication between client and server.
See [CVE-2018-19653](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19653) for more details. This is fixed
set to true to require that the TLS certificate presented by the servers matches
`server.<datacenter>.<domain>` hostname for outgoing TLS connections. The default configuration does not verify the
hostname of the certificate, only that it is signed by a trusted CA. This setting is critical to prevent a
compromised client agent from being restarted as a server and having all cluster state including all ACL tokens and
Connect CA root keys replicated to it. This setting was introduced in 0.5.1. From version 0.5.1 to 1.4.0 we
documented that `verify_server_hostname` being true implied verify_outgoing however due to a bug this was not the
case so setting only `verify_server_hostname` results in plaintext communication between client and server. See
[CVE-2018-19653](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19653) for more details. This is fixed
in 1.4.1.
**Example Server Agent TLS Configuration**