be stricter in which characters will be accepted in specifying a mask

length; allow only 0-9. From khaleesicodes via GHPR#278; ok dtucker@

diff --git a/usr.bin/ssh/addr.c b/usr.bin/ssh/addr.c
index ac0ef96..8774764 100644 (file)
--- 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;
        }