- djm@cvs.openbsd.org 2014/04/18 23:52:25

     [compat.c compat.h sshconnect2.c sshd.c version.h]
     OpenSSH 6.5 and 6.6 have a bug that causes ~0.2% of connections
     using the curve25519-sha256@libssh.org KEX exchange method to fail
     when connecting with something that implements the spec properly.

     Disable this KEX method when speaking to one of the affected
     versions.

     reported by Aris Adamantiadis; ok markus@

1 files changed, 3 insertions, 1 deletions

diff --git a/sshconnect2.c b/sshconnect2.c
index f123194b0..b1aa69c24 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshconnect2.c,v 1.205 2014/03/27 23:01:27 markus Exp $ */
+/* $OpenBSD: sshconnect2.c,v 1.206 2014/04/18 23:52:25 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  * Copyright (c) 2008 Damien Miller.  All rights reserved.
@@ -196,6 +196,8 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)
         }
         if (options.kex_algorithms != NULL)
                 myproposal[PROPOSAL_KEX_ALGS] = options.kex_algorithms;
+        myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(
+            myproposal[PROPOSAL_KEX_ALGS]);
 
         if (options.rekey_limit || options.rekey_interval)
                 packet_set_rekey_limits((u_int32_t)options.rekey_limit,