After finding shortcomings in the verifi ... / 2009-11-27

2009-11-27 After finding shortcomings in the verifi ... 10 years ago
After finding shortcomings in the verification by openssl s_client I tried the gnutls command-line client gnutls-cli. The upside of gnutls-cli is that it does use IPv6 when available. But.. gnutls-cli decides not to trust a server when using the same certificate set as used in testing openssl s_client.
~$ gnutls-cli --x509cafile /etc/ssl/certs/ca-certificates.crt -p imaps
*** Verifying server certificate failed...
:~$ openssl s_client -verify 10 -CAfile /etc/ssl/certs/ca-certificates.crt -connect
    Verify return code: 0 (ok)
Weird. I would not be completely surprised when my own root CA had issues in very strict utilities but the chain used for the work servers is very well tested.

Update 2012-04-01: Found out later that gnutls-cli had a point: the order of the certificate chain given by the server was incorrect. Which is something all other applications allow.

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