On 9/14/20 7:30 PM, William Brown wrote:
It sounds like there might be a few things going on here.
On 14 Sep 2020, at 23:44, Bryan K. Walton <bwalton@xxxxxxxxxxxx> wrote:
We have two CentOS 8 directory servers running 389ds. They are setup
with one as a master and the other as a consumer. Both of these servers
use a wildcard GoDaddy SSL cert. The cert has two intermediate certs,
and the root cert.
Initially, I had both intermediates and the root cert chained in a CA
cert file and I used the cockpit web interface to upload the chained
file, to both directory servers.
When you say you uploaded these, do you mean in the 389 cockpit console? Or somewhere else?
It's "quite likely" that when the cert + ca are in a chained file, that certutil/nss underneath are ignoring the other intermediates in the process which could explain why the chain isn't being presented properly. You could try adding the CA and each intermediate one at a time, and the TLS lib used by 389 will "work out" the chain for you (no really, it does this).
Actually, on a side note, dsconf/dsctl can only import a single cert.
No pem bundles. We had a bug opened about it. It always wants a cert
nickname. I haven't looked into it yet but just a heads up.
https://bugzilla.redhat.com/show_bug.cgi?id=1878808
Mark
When I did this, I was able to connect to both directory servers with
Apache Directory Studio. However, replication was not working.
openssl s_client -connect showed that each directory server was only
presenting the server cert and the first intermediate. Still, openssl
reported that everything was "OK". But again, replication wasn't working.
During replication, the master was reporting this in the debug logs:
(error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed (unable to get issuer certificate))
In an effort to fix this, I uninstalled the chained intermediate/root
cert file. I then installed both intermediates, individually, and the
the root cert individually. Sure enough, openssl s_client -connect now
showed the full chain (server cert -> intermediate 1 -> intermediate 2
-> root CA cert). And replication started working!
However, now, when I try to connect to either directory server with
Apache Directory Studio, I get the following error:
Error while opening connection
- ERR_04120_TLS_HANDSHAKE_ERROR The TLS handshake failed, reason: Failed to verify certification path: Algorithm constraints check failed on signature algorithm: SHA1withRSA
org.apache.directory.api.ldap.model.exception.LdapTlsHandshakeException: ERR_04120_TLS_HANDSHAKE_ERROR The TLS handshake failed, reason: Failed to verify certification path: Algorithm constraints check failed on signature algorithm: SHA1withRSA
The most likely reason for this is that a cert in the chain/path is not up to the standard expected by your client TLS library. You can check with:
openssl x509 -in FILE.PEM -noout -text | grep "Signature Algorithm"
Signature Algorithm: sha256WithRSAEncryption
I think today most TLS libraries expect at least sha256 and 2048 bit certs.
It's probably worth checking that all the certs from the CA, intermediates and your server cert are sha256 + 2048 bit or higher. Hope that helps,
—
Sincerely,
William Brown
Senior Software Engineer, 389 Directory Server
SUSE Labs
_______________________________________________
389-users mailing list -- 389-users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to 389-users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/389-users@xxxxxxxxxxxxxxxxxxxxxxx
--
389 Directory Server Development Team
_______________________________________________
389-users mailing list -- 389-users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to 389-users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/389-users@xxxxxxxxxxxxxxxxxxxxxxx
