MFH (r261320): upgrade openssh to 6.5p1

MFH (r261340): enable sandboxing by default

1 files changed, 129 insertions, 0 deletions

diff --git a/crypto/openssh/kexc25519c.c b/crypto/openssh/kexc25519c.c
new file mode 100644
index 0000000..a80678a
--- /dev/null
+++ b/crypto/openssh/kexc25519c.c
@@ -0,0 +1,129 @@
+/* $OpenBSD: kexc25519c.c,v 1.4 2014/01/12 08:13:13 djm Exp $ */
+/*
+ * Copyright (c) 2001 Markus Friedl.  All rights reserved.
+ * Copyright (c) 2010 Damien Miller.  All rights reserved.
+ * Copyright (c) 2013 Aris Adamantiadis.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+
+#include "xmalloc.h"
+#include "buffer.h"
+#include "key.h"
+#include "cipher.h"
+#include "kex.h"
+#include "log.h"
+#include "packet.h"
+#include "ssh2.h"
+
+void
+kexc25519_client(Kex *kex)
+{
+	Key *server_host_key;
+	u_char client_key[CURVE25519_SIZE];
+	u_char client_pubkey[CURVE25519_SIZE];
+	u_char *server_pubkey = NULL;
+	u_char *server_host_key_blob = NULL, *signature = NULL;
+	u_char *hash;
+	u_int slen, sbloblen, hashlen;
+	Buffer shared_secret;
+
+	kexc25519_keygen(client_key, client_pubkey);
+
+	packet_start(SSH2_MSG_KEX_ECDH_INIT);
+	packet_put_string(client_pubkey, sizeof(client_pubkey));
+	packet_send();
+	debug("sending SSH2_MSG_KEX_ECDH_INIT");
+
+#ifdef DEBUG_KEXECDH
+	dump_digest("client private key:", client_key, sizeof(client_key));
+#endif
+
+	debug("expecting SSH2_MSG_KEX_ECDH_REPLY");
+	packet_read_expect(SSH2_MSG_KEX_ECDH_REPLY);
+
+	/* hostkey */
+	server_host_key_blob = packet_get_string(&sbloblen);
+	server_host_key = key_from_blob(server_host_key_blob, sbloblen);
+	if (server_host_key == NULL)
+		fatal("cannot decode server_host_key_blob");
+	if (server_host_key->type != kex->hostkey_type)
+		fatal("type mismatch for decoded server_host_key_blob");
+	if (kex->verify_host_key == NULL)
+		fatal("cannot verify server_host_key");
+	if (kex->verify_host_key(server_host_key) == -1)
+		fatal("server_host_key verification failed");
+
+	/* Q_S, server public key */
+	server_pubkey = packet_get_string(&slen);
+	if (slen != CURVE25519_SIZE)
+		fatal("Incorrect size for server Curve25519 pubkey: %d", slen);
+
+#ifdef DEBUG_KEXECDH
+	dump_digest("server public key:", server_pubkey, CURVE25519_SIZE);
+#endif
+
+	/* signed H */
+	signature = packet_get_string(&slen);
+	packet_check_eom();
+
+	buffer_init(&shared_secret);
+	kexc25519_shared_key(client_key, server_pubkey, &shared_secret);
+
+	/* calc and verify H */
+	kex_c25519_hash(
+	    kex->hash_alg,
+	    kex->client_version_string,
+	    kex->server_version_string,
+	    buffer_ptr(&kex->my), buffer_len(&kex->my),
+	    buffer_ptr(&kex->peer), buffer_len(&kex->peer),
+	    server_host_key_blob, sbloblen,
+	    client_pubkey,
+	    server_pubkey,
+	    buffer_ptr(&shared_secret), buffer_len(&shared_secret),
+	    &hash, &hashlen
+	);
+	free(server_host_key_blob);
+	free(server_pubkey);
+	if (key_verify(server_host_key, signature, slen, hash, hashlen) != 1)
+		fatal("key_verify failed for server_host_key");
+	key_free(server_host_key);
+	free(signature);
+
+	/* save session id */
+	if (kex->session_id == NULL) {
+		kex->session_id_len = hashlen;
+		kex->session_id = xmalloc(kex->session_id_len);
+		memcpy(kex->session_id, hash, kex->session_id_len);
+	}
+	kex_derive_keys(kex, hash, hashlen,
+	    buffer_ptr(&shared_secret), buffer_len(&shared_secret));
+	buffer_free(&shared_secret);
+	kex_finish(kex);
+}