Full Disclosure: Re: Mutt: failure to check server certificate in SMTP TLS connection

[dave b <db.pub.mail () gmail com>]

> Hi,
>
> I've tested this behaviour using both - gnutls and openssl - and it seems
> like the only difference is that there is an error printed using openssl:
> "Certificate host check failed: certificate owner does not match hostname
> imap.myhost.web".
>
> In both cases a user can accept the certificate, but there is no warning
> about certificate's hostname mishmash using gnutls, which is a
> vulnerability.
>
> I just wanted to sum up the issue, do I understand it correctly?
Yes and no. The thing is with gnutls if the certificate is valid for
another host - like I had in my test example then gnutls will not show
the error and will continue as if there is no error.
Obviously if the host has a certificate that is not 'valid' (e.g. self
signed) mutt will
prompt and ask for you to accept it first .

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