upstream commit

Drop compatibility hacks for some ancient SSH
implementations, including ssh.com <=2.* and OpenSSH <= 3.*.

These versions were all released in or before 2001 and predate the
final SSH RFCs. The hacks in question aren't necessary for RFC-
compliant SSH implementations.

ok markus@

OpenBSD-Commit-ID: 4be81c67db57647f907f4e881fb9341448606138

1 files changed, 1 insertions, 4 deletions

diff --git a/sshconnect.c b/sshconnect.c
index c25e192c8..0e195a31d 100644
--- a/sshconnect.c
+++ b/sshconnect.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshconnect.c,v 1.290 2018/01/23 05:17:04 djm Exp $ */
+/* $OpenBSD: sshconnect.c,v 1.291 2018/01/23 05:27:21 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -617,9 +617,6 @@ ssh_exchange_identification(int timeout_ms)
         if (mismatch)
                 fatal("Protocol major versions differ: %d vs. %d",
                     PROTOCOL_MAJOR_2, remote_major);
-        if ((datafellows & SSH_BUG_DERIVEKEY) != 0)
-                fatal("Server version \"%.100s\" uses unsafe key agreement; "
-                    "refusing connection", remote_version);
         if ((datafellows & SSH_BUG_RSASIGMD5) != 0)
                 logit("Server version \"%.100s\" uses unsafe RSA signature "
                     "scheme; disabling use of RSA keys", remote_version);