Author: ae
Date: Tue Jan 29 11:18:41 2019
New Revision: 343551
URL: https://svnweb.freebsd.org/changeset/base/343551
Log:
Fix the bug introduced in r342908, that causes problems with dynamic
handling for protocols without ports numbers.
Since port numbers were uninitialized for protocols like ICMP/ICMPv6,
ipfw_chk() used some non-zero values to create dynamic states, and due
this it failed to match replies with created states.
Reported by: Oliver Hartmann, Boris Lytochkin
Obtained from: Yandex LLC
X-MFC after: r342908
Modified:
head/sys/netpfil/ipfw/ip_fw2.c
Modified: head/sys/netpfil/ipfw/ip_fw2.c
==============================================================================
--- head/sys/netpfil/ipfw/ip_fw2.c Tue Jan 29 11:04:17 2019
(r343550)
+++ head/sys/netpfil/ipfw/ip_fw2.c Tue Jan 29 11:18:41 2019
(r343551)
@@ -1410,6 +1410,7 @@ ipfw_chk(struct ip_fw_args *args)
dst_ip.s_addr = 0; /* make sure it is initialized */
src_ip.s_addr = 0; /* make sure it is initialized */
+ src_port = dst_port = 0;
pktlen = m->m_pkthdr.len;
DYN_INFO_INIT(&dyn_info);
@@ -1688,7 +1689,6 @@ do {
\
args->f_id.dst_ip = ntohl(dst_ip.s_addr);
} else {
proto = 0;
- src_port = dst_port = 0;
dst_ip.s_addr = src_ip.s_addr = 0;
args->f_id.addr_type = 1; /* XXX */
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