From f1201453aa32e7b226c0a7be3936300f6f143e6c Mon Sep 17 00:00:00 2001 From: Victor Julien Date: Sat, 11 Apr 2020 13:54:00 +0200 Subject: [PATCH] detect/iponly: fix parsing of '0' valued netmask (cherry picked from commit 4d50eb1647709c9f2b8809f91b2af67be99ce4ab) --- src/detect-engine-iponly.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/src/detect-engine-iponly.c b/src/detect-engine-iponly.c index e3d8b21552..dfedd3f9e5 100644 --- a/src/detect-engine-iponly.c +++ b/src/detect-engine-iponly.c @@ -178,12 +178,14 @@ static int IPOnlyCIDRItemParseSingle(IPOnlyCIDRItem *dd, const char *str) netmask = in.s_addr; - /* Extract cidr netmask */ - while ((0x01 & netmask) == 0) { - dd->netmask++; - netmask = netmask >> 1; + if (netmask != 0) { + /* Extract cidr netmask */ + while ((0x01 & netmask) == 0) { + dd->netmask++; + netmask = netmask >> 1; + } + dd->netmask = 32 - dd->netmask; } - dd->netmask = 32 - dd->netmask; } r = inet_pton(AF_INET, ip, &in); -- 2.47.2