parse/ip: fix potential oob write in ipv4 validation

Found using AFL.

diff --git a/src/util-ip.c b/src/util-ip.c
index 7b568986fb61553a6e935cc797c49fe179ab4c4f..be127327edeeabb21625d562ce60626e050b3b8a 100644 (file)
--- a/src/util-ip.c
+++ b/src/util-ip.c
@@ -53,7 +53,7 @@ bool IPv4AddressStringIsValid(const char *str)
             dots++;
             alen = 0;
         } else {
-            if (alen >= 4) {
+            if (alen >= 3) {
                 SCLogDebug("too long");
                 return false;
             }