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tests: 4-way handshake msg 3/4 replay with extra msg 1/4

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Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2017-09-29 18:57:58 +03:00
parent a0bf1b68c0
commit f4528fbf51
1 changed files with 293 additions and 0 deletions
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293
tests/hwsim/test_ap_psk.py
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@ -652,6 +652,299 @@ def test_ap_wpa2_psk_ext_retry_msg_3b(dev, apdev):
hwsim_utils.test_connectivity(dev[0], hapd)
def test_ap_wpa2_psk_ext_retry_msg_3c(dev, apdev):
"""WPA2-PSK AP using external EAPOL I/O and retry for EAPOL-Key msg 3/4 (c)"""
bssid = apdev[0]['bssid']
ssid = "test-wpa2-psk"
passphrase = 'qwertyuiop'
psk = '602e323e077bc63bd80307ef4745b754b0ae0a925c2638ecd13a794b9527b9e6'
params = hostapd.wpa2_params(ssid=ssid)
params['wpa_psk'] = psk
hapd = hostapd.add_ap(apdev[0], params)
hapd.request("SET ext_eapol_frame_io 1")
dev[0].request("SET ext_eapol_frame_io 1")
dev[0].connect(ssid, psk=passphrase, scan_freq="2412", wait_connect=False)
addr = dev[0].p2p_interface_addr()
# EAPOL-Key msg 1/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg1 = ev.split(' ')[2]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
# EAPOL-Key msg 3/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
res = dev[0].request("EAPOL_RX " + bssid + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
msg4 = ev.split(' ')[2]
# Do not send msg 4/4 to hostapd to trigger retry
# STA believes everything is ready
dev[0].wait_connected()
# EAPOL-Key msg 3/4 (retry)
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg3 = ev.split(' ')[2]
# Send a forged msg 1/4 to STA (update replay counter)
msg1b = msg1[0:18] + msg3[18:34] + msg1[34:]
# and replace nonce (this results in "WPA: ANonce from message 1 of
# 4-Way Handshake differs from 3 of 4-Way Handshake - drop packet" when
# wpa_supplicant processed msg 3/4 afterwards)
#msg1b = msg1[0:18] + msg3[18:34] + 32*"ff" + msg1[98:]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1b)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=1)
if ev is None:
# wpa_supplicant seems to have ignored the forged message. This means
# the attack would fail.
logger.info("wpa_supplicant ignored forged EAPOL-Key msg 1/4")
return
# Do not send msg 2/4 to hostapd
# Send previously received msg 3/4 to STA
res = dev[0].request("EAPOL_RX " + bssid + " " + msg3)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
ev = hapd.wait_event(["AP-STA-CONNECTED"], timeout=15)
if ev is None:
raise Exception("Timeout on AP-STA-CONNECTED from hostapd")
hwsim_utils.test_connectivity(dev[0], hapd)
def test_ap_wpa2_psk_ext_retry_msg_3d(dev, apdev):
"""WPA2-PSK AP using external EAPOL I/O and retry for EAPOL-Key msg 3/4 (d)"""
bssid = apdev[0]['bssid']
ssid = "test-wpa2-psk"
passphrase = 'qwertyuiop'
psk = '602e323e077bc63bd80307ef4745b754b0ae0a925c2638ecd13a794b9527b9e6'
params = hostapd.wpa2_params(ssid=ssid)
params['wpa_psk'] = psk
hapd = hostapd.add_ap(apdev[0], params)
hapd.request("SET ext_eapol_frame_io 1")
dev[0].request("SET ext_eapol_frame_io 1")
dev[0].connect(ssid, psk=passphrase, scan_freq="2412", wait_connect=False)
addr = dev[0].p2p_interface_addr()
# EAPOL-Key msg 1/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg1 = ev.split(' ')[2]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
# EAPOL-Key msg 3/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
res = dev[0].request("EAPOL_RX " + bssid + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
msg4 = ev.split(' ')[2]
# Do not send msg 4/4 to hostapd to trigger retry
# STA believes everything is ready
dev[0].wait_connected()
# EAPOL-Key msg 3/4 (retry)
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg3 = ev.split(' ')[2]
# Send a forged msg 1/4 to STA (update replay counter)
msg1b = msg1[0:18] + msg3[18:34] + msg1[34:]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1b)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=1)
if ev is None:
# wpa_supplicant seems to have ignored the forged message. This means
# the attack would fail.
logger.info("wpa_supplicant ignored forged EAPOL-Key msg 1/4")
return
# Do not send msg 2/4 to hostapd
# EAPOL-Key msg 3/4 (retry 2)
# New one needed to get the correct Replay Counter value
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg3 = ev.split(' ')[2]
# Send msg 3/4 to STA
res = dev[0].request("EAPOL_RX " + bssid + " " + msg3)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
ev = hapd.wait_event(["AP-STA-CONNECTED"], timeout=15)
if ev is None:
raise Exception("Timeout on AP-STA-CONNECTED from hostapd")
hwsim_utils.test_connectivity(dev[0], hapd)
def test_ap_wpa2_psk_ext_retry_msg_3e(dev, apdev):
"""WPA2-PSK AP using external EAPOL I/O and retry for EAPOL-Key msg 3/4 (e)"""
bssid = apdev[0]['bssid']
ssid = "test-wpa2-psk"
passphrase = 'qwertyuiop'
psk = '602e323e077bc63bd80307ef4745b754b0ae0a925c2638ecd13a794b9527b9e6'
params = hostapd.wpa2_params(ssid=ssid)
params['wpa_psk'] = psk
hapd = hostapd.add_ap(apdev[0], params)
hapd.request("SET ext_eapol_frame_io 1")
dev[0].request("SET ext_eapol_frame_io 1")
dev[0].connect(ssid, psk=passphrase, scan_freq="2412", wait_connect=False)
addr = dev[0].p2p_interface_addr()
# EAPOL-Key msg 1/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg1 = ev.split(' ')[2]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
# EAPOL-Key msg 3/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
res = dev[0].request("EAPOL_RX " + bssid + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
msg4 = ev.split(' ')[2]
# Do not send msg 4/4 to hostapd to trigger retry
# STA believes everything is ready
dev[0].wait_connected()
# EAPOL-Key msg 3/4 (retry)
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg3 = ev.split(' ')[2]
# Send a forged msg 1/4 to STA (update replay counter and replace ANonce)
msg1b = msg1[0:18] + msg3[18:34] + 32*"ff" + msg1[98:]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1b)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=1)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
# Do not send msg 2/4 to hostapd
# Send a forged msg 1/4 to STA (back to previously used ANonce)
msg1b = msg1[0:18] + msg3[18:34] + msg1[34:]
res = dev[0].request("EAPOL_RX " + bssid + " " + msg1b)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=1)
if ev is None:
# wpa_supplicant seems to have ignored the forged message. This means
# the attack would fail.
logger.info("wpa_supplicant ignored forged EAPOL-Key msg 1/4")
return
# Do not send msg 2/4 to hostapd
# EAPOL-Key msg 3/4 (retry 2)
# New one needed to get the correct Replay Counter value
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
msg3 = ev.split(' ')[2]
# Send msg 3/4 to STA
res = dev[0].request("EAPOL_RX " + bssid + " " + msg3)
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 4/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
ev = hapd.wait_event(["AP-STA-CONNECTED"], timeout=15)
if ev is None:
raise Exception("Timeout on AP-STA-CONNECTED from hostapd")
hwsim_utils.test_connectivity(dev[0], hapd)
def parse_eapol(data):
(version, type, length) = struct.unpack('>BBH', data[0:4])
payload = data[4:]