tests: Protocol testing for supplicant PMF/IGTK KDE handling
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
824cb5a530
commit
8030e2b594
3 changed files with 117 additions and 29 deletions
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@ -13,12 +13,13 @@ import logging
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logger = logging.getLogger()
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import os
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import re
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import socket
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import struct
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import subprocess
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import time
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import hostapd
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from utils import HwsimSkip, fail_test, skip_with_fips
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from utils import HwsimSkip, fail_test, skip_with_fips, start_monitor, stop_monitor, radiotap_build
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import hwsim_utils
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from wpasupplicant import WpaSupplicant
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@ -1329,7 +1330,7 @@ def hapd_connected(hapd):
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if ev is None:
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raise Exception("Timeout on AP-STA-CONNECTED from hostapd")
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def eapol_test(apdev, dev, wpa2=True):
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def eapol_test(apdev, dev, wpa2=True, ieee80211w=0):
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bssid = apdev['bssid']
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if wpa2:
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ssid = "test-wpa2-psk"
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@ -1342,12 +1343,17 @@ def eapol_test(apdev, dev, wpa2=True):
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else:
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params = hostapd.wpa_params(ssid=ssid)
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params['wpa_psk'] = psk
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params['ieee80211w'] = str(ieee80211w)
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hapd = hostapd.add_ap(apdev, params)
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hapd.request("SET ext_eapol_frame_io 1")
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dev.request("SET ext_eapol_frame_io 1")
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dev.connect(ssid, raw_psk=psk, scan_freq="2412", wait_connect=False)
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dev.connect(ssid, raw_psk=psk, scan_freq="2412", wait_connect=False,
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ieee80211w=str(ieee80211w))
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addr = dev.p2p_interface_addr()
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if wpa2:
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if ieee80211w == 2:
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rsne = binascii.unhexlify('30140100000fac040100000fac040100000fac02cc00')
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else:
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rsne = binascii.unhexlify('30140100000fac040100000fac040100000fac020000')
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else:
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rsne = binascii.unhexlify('dd160050f20101000050f20201000050f20201000050f202')
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@ -2321,6 +2327,87 @@ def test_ap_wpa2_psk_supp_proto_gtk_not_encrypted(dev, apdev):
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raise Exception("Unencrypted GTK KDE not reported")
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dev[0].wait_disconnected(timeout=1)
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def run_psk_supp_proto_pmf2(dev, apdev, igtk_kde=None, fail=False):
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(bssid, ssid, hapd, snonce, pmk, addr, rsne) = eapol_test(apdev[0], dev[0],
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ieee80211w=2)
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# Wait for EAPOL-Key msg 1/4 from hostapd to determine when associated
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msg = recv_eapol(hapd)
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dev[0].dump_monitor()
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# Build own EAPOL-Key msg 1/4
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anonce = binascii.unhexlify('2222222222222222222222222222222222222222222222222222222222222222')
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counter = 1
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msg = build_eapol_key_1_4(anonce, replay_counter=counter)
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counter += 1
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send_eapol(dev[0], bssid, build_eapol(msg))
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msg = recv_eapol(dev[0])
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snonce = msg['rsn_key_nonce']
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(ptk, kck, kek) = pmk_to_ptk(pmk, addr, bssid, snonce, anonce)
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logger.debug("EAPOL-Key msg 3/4")
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dev[0].dump_monitor()
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gtk_kde = binascii.unhexlify('dd16000fac010100dc11188831bf4aa4a8678d2b41498618')
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plain = rsne + gtk_kde
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if igtk_kde:
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plain += igtk_kde
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wrapped = aes_wrap(kek, pad_key_data(plain))
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msg = build_eapol_key_3_4(anonce, kck, wrapped, replay_counter=counter)
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counter += 1
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send_eapol(dev[0], bssid, build_eapol(msg))
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if fail:
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dev[0].wait_disconnected(timeout=1)
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return
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dev[0].wait_connected(timeout=1)
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# Verify that an unprotected broadcast Deauthentication frame is ignored
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bssid = binascii.unhexlify(hapd.own_addr().replace(':', ''))
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sock = start_monitor(apdev[1]["ifname"])
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radiotap = radiotap_build()
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frame = binascii.unhexlify("c0003a01")
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frame += 6*b'\xff' + bssid + bssid
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frame += binascii.unhexlify("1000" + "0300")
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sock.send(radiotap + frame)
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# And same with incorrect BIP protection
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for keyid in ["0400", "0500", "0600", "0004", "0005", "0006", "ffff"]:
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frame2 = frame + binascii.unhexlify("4c10" + keyid + "010000000000c0e5ca5f2b3b4de9")
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sock.send(radiotap + frame2)
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ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
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if ev is not None:
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raise Exception("Unexpected disconnection")
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def run_psk_supp_proto_pmf(dev, apdev, igtk_kde=None, fail=False):
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try:
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run_psk_supp_proto_pmf2(dev, apdev, igtk_kde=igtk_kde, fail=fail)
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finally:
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stop_monitor(apdev[1]["ifname"])
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def test_ap_wpa2_psk_supp_proto_no_igtk(dev, apdev):
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"""WPA2-PSK supplicant protocol testing: no IGTK KDE"""
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run_psk_supp_proto_pmf(dev, apdev, igtk_kde=None)
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def test_ap_wpa2_psk_supp_proto_igtk_ok(dev, apdev):
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"""WPA2-PSK supplicant protocol testing: valid IGTK KDE"""
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igtk_kde = binascii.unhexlify('dd1c' + '000fac09' + '0400' + 6*'00' + 16*'77')
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run_psk_supp_proto_pmf(dev, apdev, igtk_kde=igtk_kde)
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def test_ap_wpa2_psk_supp_proto_igtk_keyid_swap(dev, apdev):
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"""WPA2-PSK supplicant protocol testing: swapped IGTK KeyID"""
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igtk_kde = binascii.unhexlify('dd1c' + '000fac09' + '0004' + 6*'00' + 16*'77')
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run_psk_supp_proto_pmf(dev, apdev, igtk_kde=igtk_kde)
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def test_ap_wpa2_psk_supp_proto_igtk_keyid_too_large(dev, apdev):
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"""WPA2-PSK supplicant protocol testing: too large IGTK KeyID"""
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igtk_kde = binascii.unhexlify('dd1c' + '000fac09' + 'ffff' + 6*'00' + 16*'77')
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run_psk_supp_proto_pmf(dev, apdev, igtk_kde=igtk_kde, fail=True)
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def test_ap_wpa2_psk_supp_proto_igtk_keyid_unexpected(dev, apdev):
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"""WPA2-PSK supplicant protocol testing: unexpected IGTK KeyID"""
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igtk_kde = binascii.unhexlify('dd1c' + '000fac09' + '0006' + 6*'00' + 16*'77')
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run_psk_supp_proto_pmf(dev, apdev, igtk_kde=igtk_kde, fail=True)
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def find_wpas_process(dev):
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ifname = dev.ifname
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err, data = dev.cmd_execute(['ps', 'ax'])
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@ -17,7 +17,7 @@ import subprocess
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import hwsim_utils
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import hostapd
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from wpasupplicant import WpaSupplicant
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from utils import HwsimSkip, alloc_fail, fail_test, wait_fail_trigger
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from utils import HwsimSkip, alloc_fail, fail_test, wait_fail_trigger, start_monitor, stop_monitor, radiotap_build
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from test_ap_psk import find_wpas_process, read_process_memory, verify_not_present, get_key_locations
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@remote_compatible
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@ -1570,30 +1570,6 @@ def sae_rx_commit_token_req(sock, radiotap, send_two=False):
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sock.send(radiotap + frame)
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return True
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def radiotap_build():
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radiotap_payload = struct.pack('BB', 0x08, 0)
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radiotap_payload += struct.pack('BB', 0, 0)
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radiotap_payload += struct.pack('BB', 0, 0)
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radiotap_hdr = struct.pack('<BBHL', 0, 0, 8 + len(radiotap_payload),
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0xc002)
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return radiotap_hdr + radiotap_payload
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def start_monitor(ifname, freq=2412):
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subprocess.check_call(["iw", ifname, "set", "type", "monitor"])
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subprocess.call(["ip", "link", "set", "dev", ifname, "up"])
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subprocess.check_call(["iw", ifname, "set", "freq", str(freq)])
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ETH_P_ALL = 3
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sock = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
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socket.htons(ETH_P_ALL))
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sock.bind((ifname, 0))
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sock.settimeout(0.5)
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return sock
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def stop_monitor(ifname):
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subprocess.call(["ip", "link", "set", "dev", ifname, "down"])
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subprocess.call(["iw", ifname, "set", "type", "managed"])
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def run_sae_anti_clogging_during_attack(dev, apdev):
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if "SAE" not in dev[0].get_capability("auth_alg"):
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raise HwsimSkip("SAE not supported")
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@ -6,6 +6,7 @@
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import binascii
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import os
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import socket
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import struct
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import subprocess
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import time
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@ -162,3 +163,27 @@ def clear_regdom(hapd, dev, count=1):
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clear_country(dev)
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for i in range(count):
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dev[i].flush_scan_cache()
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def radiotap_build():
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radiotap_payload = struct.pack('BB', 0x08, 0)
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radiotap_payload += struct.pack('BB', 0, 0)
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radiotap_payload += struct.pack('BB', 0, 0)
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radiotap_hdr = struct.pack('<BBHL', 0, 0, 8 + len(radiotap_payload),
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0xc002)
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return radiotap_hdr + radiotap_payload
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def start_monitor(ifname, freq=2412):
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subprocess.check_call(["iw", ifname, "set", "type", "monitor"])
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subprocess.call(["ip", "link", "set", "dev", ifname, "up"])
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subprocess.check_call(["iw", ifname, "set", "freq", str(freq)])
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ETH_P_ALL = 3
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sock = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
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socket.htons(ETH_P_ALL))
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sock.bind((ifname, 0))
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sock.settimeout(0.5)
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return sock
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def stop_monitor(ifname):
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subprocess.call(["ip", "link", "set", "dev", ifname, "down"])
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subprocess.call(["iw", ifname, "set", "type", "managed"])
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