Description of problem: When trying to connect to my credit institute with aqbanking, I get the error above. This can be reproduced on cmdline with $ gnutls-cli fints.comdirect.de Processed 153 CA certificate(s). Resolving 'fints.comdirect.de'... Connecting to '193.41.133.14:443'... *** Fatal error: An illegal TLS extension was received. *** Handshake has failed GnuTLS error: An illegal TLS extension was received. Things are fine when using gnutls-2.8.5 from RHEL6. Version-Release number of selected component (if applicable): gnutls-3.1.18-3.fc20.x86_64 How reproducible: 100%
It seems that the server includes in its ServerHello the "Supported Elliptic Curves Extension" which is only defined for usage in a ClientHello. That's an issue of the server mainly, but seeing that other implementations tolerate that gnutls could be more lenient with that server. A work around with that broken server would be to use the priority string "NORMAL:-CURVE-ALL".
gnutls-3.1.20-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/gnutls-3.1.20-1.fc20
Package gnutls-3.1.20-1.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing gnutls-3.1.20-1.fc20' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-1960/gnutls-3.1.20-1.fc20 then log in and leave karma (feedback).
gnutls-3.1.20-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.