1# 2# SPDX-License-Identifier: BSD-2-Clause 3# 4# Copyright (c) 2019 Kristof Provost <kp@FreeBSD.org> 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26 27. $(atf_get_srcdir)/utils.subr 28 29common_dir=$(atf_get_srcdir)/../common 30 31atf_test_case "cve_2019_5598" "cleanup" 32cve_2019_5598_head() 33{ 34 atf_set descr 'Test CVE-2019-5598' 35 atf_set require.user root 36 atf_set require.progs scapy 37} 38 39cve_2019_5598_body() 40{ 41 pft_init 42 43 epair_in=$(vnet_mkepair) 44 epair_out=$(vnet_mkepair) 45 ifconfig ${epair_in}a 192.0.2.1/24 up 46 ifconfig ${epair_out}a up 47 48 vnet_mkjail alcatraz ${epair_in}b ${epair_out}b 49 jexec alcatraz ifconfig ${epair_in}b 192.0.2.2/24 up 50 jexec alcatraz ifconfig ${epair_out}b 198.51.100.2/24 up 51 jexec alcatraz sysctl net.inet.ip.forwarding=1 52 jexec alcatraz arp -s 198.51.100.3 00:01:02:03:04:05 53 jexec alcatraz route add default 198.51.100.3 54 route add -net 198.51.100.0/24 192.0.2.2 55 56 jexec alcatraz pfctl -e 57 pft_set_rules alcatraz "block all" \ 58 "pass in proto udp to 198.51.100.3 port 53" \ 59 "pass out proto udp to 198.51.100.3 port 53" 60 61 atf_check -s exit:0 env PYTHONPATH=${common_dir} \ 62 $(atf_get_srcdir)/CVE-2019-5598.py \ 63 --sendif ${epair_in}a \ 64 --recvif ${epair_out}a \ 65 --src 192.0.2.1 \ 66 --to 198.51.100.3 67} 68 69cve_2019_5598_cleanup() 70{ 71 pft_cleanup 72} 73 74atf_test_case "ttl_exceeded" "cleanup" 75ttl_exceeded_head() 76{ 77 atf_set descr 'Test that we correctly translate TTL exceeded back' 78 atf_set require.user root 79} 80 81ttl_exceeded_body() 82{ 83 pft_init 84 85 epair_srv=$(vnet_mkepair) 86 epair_int=$(vnet_mkepair) 87 epair_cl=$(vnet_mkepair) 88 89 vnet_mkjail srv ${epair_srv}a 90 jexec srv ifconfig ${epair_srv}a 192.0.2.1/24 up 91 jexec srv route add default 192.0.2.2 92 93 vnet_mkjail int ${epair_srv}b ${epair_int}a 94 jexec int sysctl net.inet.ip.forwarding=1 95 jexec int ifconfig ${epair_srv}b 192.0.2.2/24 up 96 jexec int ifconfig ${epair_int}a 203.0.113.2/24 up 97 98 vnet_mkjail nat ${epair_int}b ${epair_cl}b 99 jexec nat ifconfig ${epair_int}b 203.0.113.1/24 up 100 jexec nat ifconfig ${epair_cl}b 198.51.100.2/24 up 101 jexec nat sysctl net.inet.ip.forwarding=1 102 jexec nat route add default 203.0.113.2 103 104 vnet_mkjail cl ${epair_cl}a 105 jexec cl ifconfig ${epair_cl}a 198.51.100.1/24 up 106 jexec cl route add default 198.51.100.2 107 108 jexec nat pfctl -e 109 pft_set_rules nat \ 110 "nat on ${epair_int}b from 198.51.100.0/24 -> (${epair_int}b)" \ 111 "block" \ 112 "pass inet proto udp" \ 113 "pass inet proto icmp icmp-type { echoreq }" 114 115 # Sanity checks 116 atf_check -s exit:0 -o ignore \ 117 jexec cl ping -c 1 198.51.100.2 118 atf_check -s exit:0 -o ignore \ 119 jexec cl ping -c 1 203.0.113.1 120 atf_check -s exit:0 -o ignore \ 121 jexec cl ping -c 1 203.0.113.2 122 atf_check -s exit:0 -o ignore \ 123 jexec cl ping -c 1 192.0.2.1 124 125 echo "UDP" 126 atf_check -s exit:0 -e ignore -o match:".*203.0.113.2.*" \ 127 jexec cl traceroute 192.0.2.1 128 jexec nat pfctl -Fs 129 130 echo "ICMP" 131 atf_check -s exit:0 -e ignore -o match:".*203.0.113.2.*" \ 132 jexec cl traceroute -I 192.0.2.1 133} 134 135ttl_exceeded_cleanup() 136{ 137 pft_cleanup 138} 139 140atf_init_test_cases() 141{ 142 atf_add_test_case "cve_2019_5598" 143 atf_add_test_case "ttl_exceeded" 144} 145