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| author | Ludovic Courtès <ludo@gnu.org> | 2019-12-03 21:41:54 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2019-12-04 18:16:08 +0100 |
| commit | f5c180180e848b83d8ccdf6015cd7f214372d599 (patch) | |
| tree | cd68ee866cd7732f458e31e193c6d9cddaf7fe06 | |
| parent | 114dcb429a812911633a9fe5a9ee7d70dd28b353 (diff) | |
ssh: Always authenticate the server [security fix].
Until now, users of 'open-ssh-session', including "guix deploy" and
"GUIX_DAEMON_SOCKET=ssh://…" (but not "guix offload"), would not
authenticate the SSH server they're talking to.
* guix/ssh.scm (open-ssh-session): Call 'authenticate-server'.
| -rw-r--r-- | guix/ssh.scm | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/guix/ssh.scm b/guix/ssh.scm index f34e71392b..519c723155 100644 --- a/guix/ssh.scm +++ b/guix/ssh.scm @@ -125,6 +125,17 @@ Throw an error on failure." (match (connect! session) ('ok + ;; Authenticate against ~/.ssh/known_hosts. + (match (authenticate-server session) + ('ok #f) + (reason + (raise (condition + (&message + (message (format #f (G_ "failed to authenticate \ +server at '~a': ~a") + (session-get session 'host) + reason))))))) + ;; Use public key authentication, via the SSH agent if it's available. (match (userauth-public-key/auto! session) ('success |