diff -up openssh/misc.c.config openssh/misc.c

--- openssh/misc.c.config	2018-08-22 13:58:54.922807799 +0200

+++ openssh/misc.c	2018-08-22 13:58:55.000808428 +0200

@@ -485,7 +485,7 @@ put_host_port(const char *host, u_short

  * The delimiter char, if present, is stored in delim.

  * If this is the last field, *cp is set to NULL.

  */

-static char *

+char *

 hpdelim2(char **cp, char *delim)

 {

 	char *s, *old;

diff -up openssh/misc.h.config openssh/misc.h

--- openssh/misc.h.config	2018-08-20 07:57:29.000000000 +0200

+++ openssh/misc.h	2018-08-22 13:58:55.001808436 +0200

@@ -54,6 +54,7 @@ int	 set_rdomain(int, const char *);

 int	 a2port(const char *);

 int	 a2tun(const char *, int *);

 char	*put_host_port(const char *, u_short);

+char	*hpdelim2(char **, char *);

 char	*hpdelim(char **);

 char	*cleanhostname(char *);

 char	*colon(char *);

diff -up openssh/servconf.c.config openssh/servconf.c

--- openssh/servconf.c.config	2018-08-22 13:58:54.989808340 +0200

+++ openssh/servconf.c	2018-08-22 14:18:49.235443937 +0200

@@ -886,7 +886,7 @@ process_permitopen_list(struct ssh *ssh,

 {

 	u_int i;

 	int port;

-	char *host, *arg, *oarg;

+	char *host, *arg, *oarg, ch;

 	int where = opcode == sPermitOpen ? FORWARD_LOCAL : FORWARD_REMOTE;

 	const char *what = lookup_opcode_name(opcode);

@@ -904,8 +904,8 @@ process_permitopen_list(struct ssh *ssh,

 	/* Otherwise treat it as a list of permitted host:port */

 	for (i = 0; i < num_opens; i++) {

 		oarg = arg = xstrdup(opens[i]);

-		host = hpdelim(&arg;;

-		if (host == NULL)

+		host = hpdelim2(&arg, &ch);

+		if (host == NULL || ch == '/')

 			fatal("%s: missing host in %s", __func__, what);

 		host = cleanhostname(host);

 		if (arg == NULL || ((port = permitopen_port(arg)) < 0))

@@ -1323,8 +1323,10 @@ process_server_config_line(ServerOptions

 			port = 0;

 			p = arg;

 		} else {

-			p = hpdelim(&arg;;

-			if (p == NULL)

+			char ch;

+			arg2 = NULL;

+			p = hpdelim2(&arg, &ch);

+			if (p == NULL || ch == '/')

 				fatal("%s line %d: bad address:port usage",

 				    filename, linenum);

 			p = cleanhostname(p);

@@ -1965,9 +1967,10 @@ process_server_config_line(ServerOptions

 				 */

 				xasprintf(&arg2, "*:%s", arg);

 			} else {

+				char ch;

 				arg2 = xstrdup(arg);

-				p = hpdelim(&arg;;

-				if (p == NULL) {

+				p = hpdelim2(&arg, &ch);

+				if (p == NULL || ch == '/') {

 					fatal("%s line %d: missing host in %s",

 					    filename, linenum,

 					    lookup_opcode_name(opcode));