O link do servidor não é confiável.
% curl https://w3s.webmoney.ru:443
curl: (60) server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
Executar
curl --insecure https://w3s.webmoney.ru:443
e funciona.
De man curl
-k, --insecure
(SSL) This option explicitly allows curl to perform "insecure" SSL
connections and transfers. All SSL connections are attempted to be
made secure by using the CA certificate bundle installed by
default. This makes all connections considered "insecure" fail unless
-k, --insecure is used.
Adicione certificados confiáveis com
-
Adicione o caminho ao certificado para
/etc/ca-certificates.conf
use um caminho relativo a
/usr/share/ca-certificates
-
Executar
sudo update-ca-certificates
Para mais instruções, leia man update-ca-certificates
Extraído dos comentários:
FYI: O mesmo site tem SSLv3 e SSLv2 ativados - é BAD e não é de todo confiável por causa disso