SSH tunnel key exchange methods

From: Sven <svoop_6cedifwf9e(at)delirium(dot)ch>
To: pgadmin-support(at)postgresql(dot)org
Subject: SSH tunnel key exchange methods
Date: 2015-11-10 08:39:59
Message-ID: loom.20151110T093046-11@post.gmane.org
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Hi

The key exchange methods offered when opening an SSH tunnel are all
SHA1 and therefore too weak:

[sshd] fatal: Unable to negotiate with xxx.xxx.xxx.xxx: no matching
key exchange method found. Their offer:
diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,
diffie-hellman-group1-sha1 [preauth]

Is it possible to update pgadmin for safer kexes? IMHO, at least
diffie-hellman-group-exchange-sha256 would be nice, better even
curve25519-sha256(at)libssh(dot)org as well.

Thanks for considering this!

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