From 1f8040da2867dfb4ab58498af5622dc9b22ffe62 Mon Sep 17 00:00:00 2001
From: djm <djm@openbsd.org>
Date: Fri, 29 Apr 2022 04:55:07 +0000
Subject: [PATCH] be stricter in which characters will be accepted in
 specifying a mask length; allow only 0-9. From khaleesicodes via GHPR#278; ok
 dtucker@

---
 usr.bin/ssh/addr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usr.bin/ssh/addr.c b/usr.bin/ssh/addr.c
index ac0ef96c041..8774764ce58 100644
--- a/usr.bin/ssh/addr.c
+++ b/usr.bin/ssh/addr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: addr.c,v 1.4 2021/10/22 10:51:57 dtucker Exp $ */
+/* $OpenBSD: addr.c,v 1.5 2022/04/29 04:55:07 djm Exp $ */
 
 /*
  * Copyright (c) 2004-2008 Damien Miller <djm@mindrot.org>
@@ -393,7 +393,7 @@ addr_pton_cidr(const char *p, struct xaddr *n, u_int *l)
 		*mp = '\0';
 		mp++;
 		masklen = strtoul(mp, &cp, 10);
-		if (*mp == '\0' || *cp != '\0' || masklen > 128)
+		if (*mp < '0' || *mp > '9' || *cp != '\0' || masklen > 128)
 			return -1;
 	}
 
-- 
2.20.1