[stunnel-users] is verify level 4 working?

[Thomas Eifert]

dansmith,

I'd be the last to argue with you.

Purely as an experiment, I tried changing the verify level from 4 to 3, 
but it didn't fly.  I most likely missed the entirety of the signing 
chain, as I only added the certificate of the *issuing* CA.

Regards,

Thomas

On 7/8/2013 7:01 PM, dansmith wrote:
> Thomas, the recent exception you are describing - needing a CA
> sertificate and server certificate is what verify=3 does.
> So, I guess there is some regression in the code.
> When I look at stunnel's verify.c code, there is only one reference to
> level 4 in line 225. It seems like verify=4 functionality is missing
> from the code.
>
> On 07/08/2013 11:44 PM, Thomas Eifert wrote:
>> dansmith,
>>
>> It's my understanding that verify = 4 should, theoretically, look only
>> for the server certificate, and this is the way I've been using it
>> with great success over the past year or so.  Recently, however, I ran
>> into an exception to that behavior.
>>
>> In my case, I only had to download and install one certificate; that
>> of the signing CA.  I simply pasted it directly below the server
>> certificate in the associated .pem file.  The CA certificate wasn't
>> originally in .pem format, so I converted it beforehand.  OpenSSL has
>> conversion capability, and there are also online certificate tools
>> available.  Your mileage may vary.
>>
>> Good luck.
>>
>> Thomas
>>
>>
>> On 7/8/2013 3:01 PM, dansmith wrote:
>>
>>> Could you kindly break it down for me. Are you saying that I need to
>>> have two CAs A & B. A signs the certificate of B and B signs the
>>> certificate of my server?
>>> Do I understand correctly that verify=4 is supposed to simply ignore
>> any
>>> CAs and only look at the actual certificate, comparing it to the
>>> certificate in CAfile ?
>>>
>>>
>>> On 07/08/2013 06:32 PM, Thomas Eifert wrote:
>>>> You're not missing anything.  I've experienced a similar issue.  While
>>>> verify = 4 generally works well in most cases and will ignore the CA
>>>> chain, I've encountered a few isolated incidences in which I've had to
>>>> append or "chain" the server certificate with the certificate of the
>>>> CA. Give it a shot and see if it resolves your issue.
>>>>
>>>> Thomas
>>>>
>>>> On 7/8/2013 3:02 AM, dansmith wrote:
>>>>> I would expect that level 4 only compares locally installed
>>>>> certificates, however I get the same behaviour as with level 3,
>> stunnel
>>>>> expects a CA cert.
>>>>> Here'e the relevant log when on level 4
>>>>>
>>>>> Jul  6 23:46:31 mmm stunnel: LOG7[7870:140491349628672]: Starting
>>>>> certificate verification: depth=0,
>>>>> /C=qq/ST=qq/O=qqq/OU=rer/CN=redf/emailAddress=rfd
>>>>> Jul  6 23:46:31 mmm stunnel: LOG4[7870:140491349628672]: CERT:
>>>>> Verification error: unable to get local issuer certificate
>>>>> Jul  6 23:46:31 mmm stunnel: LOG4[7870:140491349628672]: Certificate
>>>>> check failed: depth=0,
>> /C=qq/ST=qq/O=qqq/OU=rer/CN=redf/emailAddress=rfd
>>>>> Jul  6 23:46:31 mmm stunnel: LOG7[7872:140080853112576]: SSL alert
>>>>> (read): fatal: unknown CA
>>>>>
>>>>> What am I missing in understanding verify's level 4 ?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> stunnel-users mailing list
>>>>> stunnel-users at stunnel.org
>>>>> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
>>>>>
>>>>
>>>
>>>
>>
>
>

-- 
Attention: This message and all attachments are private and may contain 
information that is confidential and privileged. If you received this 
message in error, please notify the sender by reply email and delete the 
message immediately.