Re: Using Arbitrary X509 certificates for LDAPS authentication

[Michael Ströder <michael@stroeder.com>]

Howard Chu wrote:
> Stephen Cartwright wrote:
>> I looked into this and I don't understand :( Would you please clarify
>> why a DN such as "/C=CA/O=Grid/CN=host/somehost.somedomain.ca" is
>> broken? You said "somehost.somedomain.ca" is not a valid RDN because
>> it just has a value and not a type, however the RDN is not just
>> "somehost.somedomain.ca" but "CN=host/somehost.somedomain.ca" which
>> has a type of "CN" and a value of "host/somehost.somedomain.ca" does
>> it not?
> 
> That wasn't clear to me from the output you posted before. Since you
> were posting a DN that uses '/' as its RDN separator, the software that
> generated this log output should have escaped the '/' in the attribute
> value if that was really the situation. E.g., it should have looked like
> /CN=host%2Fsomehost.somedomain.ca.

Using top-down-order and / as separator is the standard behaviour of OpenSSL.
:-/ One can also display subject and issuer names in certs with

openssl x509 -nameopt rfc2253

>> If this RDN is in fact valid, I still don't understand why DNs
>> of the form
>> "/C=CA/O=Grid/CN=host/somehost.somedomain.ca" seem to not work with LDAP.
> 
> At this point I have no idea what you're really working with. The
> comment I posted originally may not apply to this situation at all.

Since this is about GRID services I guess someone falsely put a Kerberos
service prinicipal name in the CN attribute of the server cert. The cert has
to be corrected to contain exactly the FQDN of the server used during LDAP
connect *without* the prefix "host/".

Ciao, Michael.