From f34e539ea7fd7c71926fa9198247bab8d9768fa7 Mon Sep 17 00:00:00 2001 From: mestre Date: Fri, 23 Jun 2017 07:24:48 +0000 Subject: [PATCH] When using the escape sequence &~ the code path is client_loop() -> client_simple_escape_filter() -> process_escapes() -> fork() and the pledge for this path lacks the proc promise and therefore aborts the process. The solution is to just add proc the promise to this specific pledge. Reported by Gregoire Jadi gjadi ! omecha.info Insight with tb@, OK jca@ --- usr.bin/ssh/clientloop.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c index b1ed83f27d9..a762773d3a5 100644 --- a/usr.bin/ssh/clientloop.c +++ b/usr.bin/ssh/clientloop.c @@ -1,4 +1,4 @@ -/* $OpenBSD: clientloop.c,v 1.299 2017/05/31 09:15:42 deraadt Exp $ */ +/* $OpenBSD: clientloop.c,v 1.300 2017/06/23 07:24:48 mestre Exp $ */ /* * Author: Tatu Ylonen * Copyright (c) 1995 Tatu Ylonen , Espoo, Finland @@ -1246,7 +1246,7 @@ client_loop(int have_pty, int escape_char_arg, int ssh2_chan_id) } else { debug("pledge: network"); - if (pledge("stdio unix inet dns tty", NULL) == -1) + if (pledge("stdio unix inet dns proc tty", NULL) == -1) fatal("%s pledge(): %s", __func__, strerror(errno)); } -- 2.20.1