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https://issues.apache.org/jira/browse/GUACAMOLE-407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper updated GUACAMOLE-407:
-------------------------------------
Description:
The version of libssh2 within CentOS 7 lacks support for the more-recent
versions of SSH key exchange methods and MACs. As the [guacamole/guacd Docker
image|https://hub.docker.com/r/guacamole/guacd/] uses CentOS 7, it also lacks
this support.
Currently, the following key exchange methods are supported:
* diffie-hellman-group14-sha1
* diffie-hellman-group-exchange-sha1
* diffie-hellman-group1-sha1
and the following MACs are supported:
* hmac-sha1,hmac-sha1-96
* hmac-md5,hmac-md5-96
* hmac-ripemd160
* hmac-ripemd...@openssh.com
More recent libssh2 includes support for SHA2 and curve25519. See
https://wiki.mozilla.org/Security/Guidelines/OpenSSH for more information and
references.
was:
It seems that guacamole doesn't support any "modern" ssh crypto.
The following key exchange methods are supported:
* diffie-hellman-group14-sha1
* diffie-hellman-group-exchange-sha1
* diffie-hellman-group1-sha1
The following MACs are supported:
* hmac-sha1,hmac-sha1-96
* hmac-md5,hmac-md5-96
* hmac-ripemd160
* hmac-ripemd...@openssh.com
Guacamole SHOULD support modern crypto like SHA2 and curve25519, see
https://wiki.mozilla.org/Security/Guidelines/OpenSSH for more information and
references.
> Support "modern" ssh crypto - only SHA1 is available
> ----------------------------------------------------
>
> Key: GUACAMOLE-407
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-407
> Project: Guacamole
> Issue Type: Improvement
> Components: guacd-docker
> Affects Versions: 0.9.13-incubating
> Reporter: Sven Gottwald
>
> The version of libssh2 within CentOS 7 lacks support for the more-recent
> versions of SSH key exchange methods and MACs. As the [guacamole/guacd Docker
> image|https://hub.docker.com/r/guacamole/guacd/] uses CentOS 7, it also lacks
> this support.
> Currently, the following key exchange methods are supported:
> * diffie-hellman-group14-sha1
> * diffie-hellman-group-exchange-sha1
> * diffie-hellman-group1-sha1
> and the following MACs are supported:
> * hmac-sha1,hmac-sha1-96
> * hmac-md5,hmac-md5-96
> * hmac-ripemd160
> * hmac-ripemd...@openssh.com
> More recent libssh2 includes support for SHA2 and curve25519. See
> https://wiki.mozilla.org/Security/Guidelines/OpenSSH for more information and
> references.
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