upstream commit
send SSH2_MSG_UNIMPLEMENTED replies to unexpected messages during KEX; bz#2949, ok dtucker@ Upstream-ID: 2b3abdff344d53c8d505f45c83a7b12e84935786
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11
kex.c
11
kex.c
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@ -1,4 +1,4 @@
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/* $OpenBSD: kex.c,v 1.111 2015/10/13 00:21:27 djm Exp $ */
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/* $OpenBSD: kex.c,v 1.112 2015/11/13 04:39:35 djm Exp $ */
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/*
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* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
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*
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@ -315,7 +315,14 @@ kex_prop_free(char **proposal)
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static int
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kex_protocol_error(int type, u_int32_t seq, void *ctxt)
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{
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error("Hm, kex protocol error: type %d seq %u", type, seq);
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struct ssh *ssh = active_state; /* XXX */
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int r;
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error("kex protocol error: type %d seq %u", type, seq);
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if ((r = sshpkt_start(ssh, SSH2_MSG_UNIMPLEMENTED)) != 0 ||
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(r = sshpkt_put_u32(ssh, seq)) != 0 ||
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(r = sshpkt_send(ssh)) != 0)
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return r;
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return 0;
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}
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