From e17335f3cfd9e54fe5e1072ffbcc34baf2d014ef Mon Sep 17 00:00:00 2001 From: djm Date: Tue, 29 Apr 2014 13:10:30 +0000 Subject: [PATCH] bz#1818 - don't send channel success/failre replies on channels that have sent a close already; analysis and patch from Simon Tatham; ok markus@ --- usr.bin/ssh/clientloop.c | 4 ++-- usr.bin/ssh/serverloop.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c index 3201b8a0c7a..b5227e6a108 100644 --- a/usr.bin/ssh/clientloop.c +++ b/usr.bin/ssh/clientloop.c @@ -1,4 +1,4 @@ -/* $OpenBSD: clientloop.c,v 1.258 2014/02/02 03:44:31 djm Exp $ */ +/* $OpenBSD: clientloop.c,v 1.259 2014/04/29 13:10:30 djm Exp $ */ /* * Author: Tatu Ylonen * Copyright (c) 1995 Tatu Ylonen , Espoo, Finland @@ -2036,7 +2036,7 @@ client_input_channel_req(int type, u_int32_t seq, void *ctxt) } packet_check_eom(); } - if (reply && c != NULL) { + if (reply && c != NULL && !(c->flags & CHAN_CLOSE_SENT)) { packet_start(success ? SSH2_MSG_CHANNEL_SUCCESS : SSH2_MSG_CHANNEL_FAILURE); packet_put_int(c->remote_id); diff --git a/usr.bin/ssh/serverloop.c b/usr.bin/ssh/serverloop.c index 526fbb99104..8f6e492e009 100644 --- a/usr.bin/ssh/serverloop.c +++ b/usr.bin/ssh/serverloop.c @@ -1,4 +1,4 @@ -/* $OpenBSD: serverloop.c,v 1.170 2014/02/02 03:44:31 djm Exp $ */ +/* $OpenBSD: serverloop.c,v 1.171 2014/04/29 13:10:30 djm Exp $ */ /* * Author: Tatu Ylonen * Copyright (c) 1995 Tatu Ylonen , Espoo, Finland @@ -1164,7 +1164,7 @@ server_input_channel_req(int type, u_int32_t seq, void *ctxt) } else if ((c->type == SSH_CHANNEL_LARVAL || c->type == SSH_CHANNEL_OPEN) && strcmp(c->ctype, "session") == 0) success = session_input_channel_req(c, rtype); - if (reply) { + if (reply && !(c->flags & CHAN_CLOSE_SENT)) { packet_start(success ? SSH2_MSG_CHANNEL_SUCCESS : SSH2_MSG_CHANNEL_FAILURE); packet_put_int(c->remote_id); -- 2.20.1