[lfs-patches] r3653 - trunk/wpa_supplicant

ken at higgs.linuxfromscratch.org ken at higgs.linuxfromscratch.org
Mon Oct 16 12:21:20 PDT 2017


Author: ken
Date: Mon Oct 16 12:21:20 2017
New Revision: 3653

Log:
Patch wpa_supplicant for the KRACK protocol vulnerabilities, patch provided by Tim Tassonis.

Added:
   trunk/wpa_supplicant/wpa_supplicant-2.6-upstream_fixes-1.patch

Added: trunk/wpa_supplicant/wpa_supplicant-2.6-upstream_fixes-1.patch
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/wpa_supplicant/wpa_supplicant-2.6-upstream_fixes-1.patch	Mon Oct 16 12:21:20 2017	(r3653)
@@ -0,0 +1,676 @@
+Submitted By: Tim Tassonis <stuff at decentral.ch>
+Date: 2017-10-16
+Initial Package Version: 2.6
+Upstream Status: Applied
+Origin: Upstream
+Description: Fixes 'krackattacks' protocol weakness (CVE-2017-13077 to 13088, 13084 is N/A)
+
+diff -ruN wpa_supplicant-2.6/src/ap/ieee802_11.c wpa_supplicant-2.6-krack1/src/ap/ieee802_11.c
+--- wpa_supplicant-2.6/src/ap/ieee802_11.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/ap/ieee802_11.c	2017-10-16 17:54:06.042736097 +0200
+@@ -1841,6 +1841,7 @@
+ {
+ 	struct ieee80211_ht_capabilities ht_cap;
+ 	struct ieee80211_vht_capabilities vht_cap;
++	int set = 1;
+ 
+ 	/*
+ 	 * Remove the STA entry to ensure the STA PS state gets cleared and
+@@ -1848,9 +1849,18 @@
+ 	 * FT-over-the-DS, where a station re-associates back to the same AP but
+ 	 * skips the authentication flow, or if working with a driver that
+ 	 * does not support full AP client state.
++	 *
++	 * Skip this if the STA has already completed FT reassociation and the
++	 * TK has been configured since the TX/RX PN must not be reset to 0 for
++	 * the same key.
+ 	 */
+-	if (!sta->added_unassoc)
++	if (!sta->added_unassoc &&
++	    (!(sta->flags & WLAN_STA_AUTHORIZED) ||
++	     !wpa_auth_sta_ft_tk_already_set(sta->wpa_sm))) {
+ 		hostapd_drv_sta_remove(hapd, sta->addr);
++		wpa_auth_sm_event(sta->wpa_sm, WPA_DRV_STA_REMOVED);
++		set = 0;
++	}
+ 
+ #ifdef CONFIG_IEEE80211N
+ 	if (sta->flags & WLAN_STA_HT)
+@@ -1873,11 +1883,11 @@
+ 			    sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
+ 			    sta->flags | WLAN_STA_ASSOC, sta->qosinfo,
+ 			    sta->vht_opmode, sta->p2p_ie ? 1 : 0,
+-			    sta->added_unassoc)) {
++			    set)) {
+ 		hostapd_logger(hapd, sta->addr,
+ 			       HOSTAPD_MODULE_IEEE80211, HOSTAPD_LEVEL_NOTICE,
+ 			       "Could not %s STA to kernel driver",
+-			       sta->added_unassoc ? "set" : "add");
++			       set ? "set" : "add");
+ 
+ 		if (sta->added_unassoc) {
+ 			hostapd_drv_sta_remove(hapd, sta->addr);
+diff -ruN wpa_supplicant-2.6/src/ap/wpa_auth.c wpa_supplicant-2.6-krack1/src/ap/wpa_auth.c
+--- wpa_supplicant-2.6/src/ap/wpa_auth.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/ap/wpa_auth.c	2017-10-16 17:55:02.289743770 +0200
+@@ -1745,6 +1745,9 @@
+ #else /* CONFIG_IEEE80211R */
+ 		break;
+ #endif /* CONFIG_IEEE80211R */
++	case WPA_DRV_STA_REMOVED:
++		sm->tk_already_set = FALSE;
++		return 0;
+ 	}
+ 
+ #ifdef CONFIG_IEEE80211R
+@@ -1898,6 +1901,21 @@
+ }
+ 
+ 
++static int wpa_auth_sm_ptk_update(struct wpa_state_machine *sm)
++{
++	if (random_get_bytes(sm->ANonce, WPA_NONCE_LEN)) {
++		wpa_printf(MSG_ERROR,
++			   "WPA: Failed to get random data for ANonce");
++		sm->Disconnect = TRUE;
++		return -1;
++	}
++	wpa_hexdump(MSG_DEBUG, "WPA: Assign new ANonce", sm->ANonce,
++		    WPA_NONCE_LEN);
++	sm->TimeoutCtr = 0;
++	return 0;
++}
++
++
+ SM_STATE(WPA_PTK, INITPMK)
+ {
+ 	u8 msk[2 * PMK_LEN];
+@@ -2455,9 +2473,12 @@
+ 		SM_ENTER(WPA_PTK, AUTHENTICATION);
+ 	else if (sm->ReAuthenticationRequest)
+ 		SM_ENTER(WPA_PTK, AUTHENTICATION2);
+-	else if (sm->PTKRequest)
+-		SM_ENTER(WPA_PTK, PTKSTART);
+-	else switch (sm->wpa_ptk_state) {
++	else if (sm->PTKRequest) {
++		if (wpa_auth_sm_ptk_update(sm) < 0)
++			SM_ENTER(WPA_PTK, DISCONNECTED);
++		else
++			SM_ENTER(WPA_PTK, PTKSTART);
++	} else switch (sm->wpa_ptk_state) {
+ 	case WPA_PTK_INITIALIZE:
+ 		break;
+ 	case WPA_PTK_DISCONNECT:
+@@ -3250,6 +3271,14 @@
+ }
+ 
+ 
++int wpa_auth_sta_ft_tk_already_set(struct wpa_state_machine *sm)
++{
++	if (!sm || !wpa_key_mgmt_ft(sm->wpa_key_mgmt))
++		return 0;
++	return sm->tk_already_set;
++}
++
++
+ int wpa_auth_sta_clear_pmksa(struct wpa_state_machine *sm,
+ 			     struct rsn_pmksa_cache_entry *entry)
+ {
+diff -ruN wpa_supplicant-2.6/src/ap/wpa_auth_ft.c wpa_supplicant-2.6-krack1/src/ap/wpa_auth_ft.c
+--- wpa_supplicant-2.6/src/ap/wpa_auth_ft.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/ap/wpa_auth_ft.c	2017-10-16 17:54:06.043736097 +0200
+@@ -780,6 +780,14 @@
+ 		return;
+ 	}
+ 
++	if (sm->tk_already_set) {
++		/* Must avoid TK reconfiguration to prevent clearing of TX/RX
++		 * PN in the driver */
++		wpa_printf(MSG_DEBUG,
++			   "FT: Do not re-install same PTK to the driver");
++		return;
++	}
++
+ 	/* FIX: add STA entry to kernel/driver here? The set_key will fail
+ 	 * most likely without this.. At the moment, STA entry is added only
+ 	 * after association has been completed. This function will be called
+@@ -792,6 +800,7 @@
+ 
+ 	/* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */
+ 	sm->pairwise_set = TRUE;
++	sm->tk_already_set = TRUE;
+ }
+ 
+ 
+@@ -898,6 +907,7 @@
+ 
+ 	sm->pairwise = pairwise;
+ 	sm->PTK_valid = TRUE;
++	sm->tk_already_set = FALSE;
+ 	wpa_ft_install_ptk(sm);
+ 
+ 	buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
+diff -ruN wpa_supplicant-2.6/src/ap/wpa_auth.h wpa_supplicant-2.6-krack1/src/ap/wpa_auth.h
+--- wpa_supplicant-2.6/src/ap/wpa_auth.h	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/ap/wpa_auth.h	2017-10-16 17:54:06.043736097 +0200
+@@ -267,7 +267,7 @@
+ 		 u8 *data, size_t data_len);
+ enum wpa_event {
+ 	WPA_AUTH, WPA_ASSOC, WPA_DISASSOC, WPA_DEAUTH, WPA_REAUTH,
+-	WPA_REAUTH_EAPOL, WPA_ASSOC_FT
++	WPA_REAUTH_EAPOL, WPA_ASSOC_FT, WPA_DRV_STA_REMOVED
+ };
+ void wpa_remove_ptk(struct wpa_state_machine *sm);
+ int wpa_auth_sm_event(struct wpa_state_machine *sm, enum wpa_event event);
+@@ -280,6 +280,7 @@
+ int wpa_auth_get_pairwise(struct wpa_state_machine *sm);
+ int wpa_auth_sta_key_mgmt(struct wpa_state_machine *sm);
+ int wpa_auth_sta_wpa_version(struct wpa_state_machine *sm);
++int wpa_auth_sta_ft_tk_already_set(struct wpa_state_machine *sm);
+ int wpa_auth_sta_clear_pmksa(struct wpa_state_machine *sm,
+ 			     struct rsn_pmksa_cache_entry *entry);
+ struct rsn_pmksa_cache_entry *
+diff -ruN wpa_supplicant-2.6/src/ap/wpa_auth_i.h wpa_supplicant-2.6-krack1/src/ap/wpa_auth_i.h
+--- wpa_supplicant-2.6/src/ap/wpa_auth_i.h	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/ap/wpa_auth_i.h	2017-10-16 17:54:06.043736097 +0200
+@@ -65,6 +65,7 @@
+ 	struct wpa_ptk PTK;
+ 	Boolean PTK_valid;
+ 	Boolean pairwise_set;
++	Boolean tk_already_set;
+ 	int keycount;
+ 	Boolean Pair;
+ 	struct wpa_key_replay_counter {
+diff -ruN wpa_supplicant-2.6/src/common/wpa_common.h wpa_supplicant-2.6-krack1/src/common/wpa_common.h
+--- wpa_supplicant-2.6/src/common/wpa_common.h	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/common/wpa_common.h	2017-10-16 17:54:56.105742922 +0200
+@@ -215,8 +215,20 @@
+ 	size_t kck_len;
+ 	size_t kek_len;
+ 	size_t tk_len;
++	int installed; /* 1 if key has already been installed to driver */
+ };
+ 
++struct wpa_gtk {
++	u8 gtk[WPA_GTK_MAX_LEN];
++	size_t gtk_len;
++};
++
++#ifdef CONFIG_IEEE80211W
++struct wpa_igtk {
++	u8 igtk[WPA_IGTK_MAX_LEN];
++	size_t igtk_len;
++};
++#endif /* CONFIG_IEEE80211W */
+ 
+ /* WPA IE version 1
+  * 00-50-f2:1 (OUI:OUI type)
+diff -ruN wpa_supplicant-2.6/src/rsn_supp/tdls.c wpa_supplicant-2.6-krack1/src/rsn_supp/tdls.c
+--- wpa_supplicant-2.6/src/rsn_supp/tdls.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/rsn_supp/tdls.c	2017-10-16 17:55:11.281744997 +0200
+@@ -112,6 +112,7 @@
+ 		u8 tk[16]; /* TPK-TK; assuming only CCMP will be used */
+ 	} tpk;
+ 	int tpk_set;
++	int tk_set; /* TPK-TK configured to the driver */
+ 	int tpk_success;
+ 	int tpk_in_progress;
+ 
+@@ -192,6 +193,20 @@
+ 	u8 rsc[6];
+ 	enum wpa_alg alg;
+ 
++	if (peer->tk_set) {
++		/*
++		 * This same TPK-TK has already been configured to the driver
++		 * and this new configuration attempt (likely due to an
++		 * unexpected retransmitted frame) would result in clearing
++		 * the TX/RX sequence number which can break security, so must
++		 * not allow that to happen.
++		 */
++		wpa_printf(MSG_INFO, "TDLS: TPK-TK for the peer " MACSTR
++			   " has already been configured to the driver - do not reconfigure",
++			   MAC2STR(peer->addr));
++		return -1;
++	}
++
+ 	os_memset(rsc, 0, 6);
+ 
+ 	switch (peer->cipher) {
+@@ -209,12 +224,15 @@
+ 		return -1;
+ 	}
+ 
++	wpa_printf(MSG_DEBUG, "TDLS: Configure pairwise key for peer " MACSTR,
++		   MAC2STR(peer->addr));
+ 	if (wpa_sm_set_key(sm, alg, peer->addr, -1, 1,
+ 			   rsc, sizeof(rsc), peer->tpk.tk, key_len) < 0) {
+ 		wpa_printf(MSG_WARNING, "TDLS: Failed to set TPK to the "
+ 			   "driver");
+ 		return -1;
+ 	}
++	peer->tk_set = 1;
+ 	return 0;
+ }
+ 
+@@ -696,7 +714,7 @@
+ 	peer->cipher = 0;
+ 	peer->qos_info = 0;
+ 	peer->wmm_capable = 0;
+-	peer->tpk_set = peer->tpk_success = 0;
++	peer->tk_set = peer->tpk_set = peer->tpk_success = 0;
+ 	peer->chan_switch_enabled = 0;
+ 	os_memset(&peer->tpk, 0, sizeof(peer->tpk));
+ 	os_memset(peer->inonce, 0, WPA_NONCE_LEN);
+@@ -1159,6 +1177,7 @@
+ 		wpa_tdls_peer_free(sm, peer);
+ 		return -1;
+ 	}
++	peer->tk_set = 0; /* A new nonce results in a new TK */
+ 	wpa_hexdump(MSG_DEBUG, "TDLS: Initiator Nonce for TPK handshake",
+ 		    peer->inonce, WPA_NONCE_LEN);
+ 	os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN);
+@@ -1751,6 +1770,19 @@
+ }
+ 
+ 
++static int tdls_nonce_set(const u8 *nonce)
++{
++	int i;
++
++	for (i = 0; i < WPA_NONCE_LEN; i++) {
++		if (nonce[i])
++			return 1;
++	}
++
++	return 0;
++}
++
++
+ static int wpa_tdls_process_tpk_m1(struct wpa_sm *sm, const u8 *src_addr,
+ 				   const u8 *buf, size_t len)
+ {
+@@ -2004,7 +2036,8 @@
+ 	peer->rsnie_i_len = kde.rsn_ie_len;
+ 	peer->cipher = cipher;
+ 
+-	if (os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) != 0) {
++	if (os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) != 0 ||
++	    !tdls_nonce_set(peer->inonce)) {
+ 		/*
+ 		 * There is no point in updating the RNonce for every obtained
+ 		 * TPK M1 frame (e.g., retransmission due to timeout) with the
+@@ -2020,6 +2053,7 @@
+ 				"TDLS: Failed to get random data for responder nonce");
+ 			goto error;
+ 		}
++		peer->tk_set = 0; /* A new nonce results in a new TK */
+ 	}
+ 
+ #if 0
+diff -ruN wpa_supplicant-2.6/src/rsn_supp/wpa.c wpa_supplicant-2.6-krack1/src/rsn_supp/wpa.c
+--- wpa_supplicant-2.6/src/rsn_supp/wpa.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/rsn_supp/wpa.c	2017-10-16 17:55:23.280746653 +0200
+@@ -510,7 +510,6 @@
+ 		os_memset(buf, 0, sizeof(buf));
+ 	}
+ 	sm->tptk_set = 1;
+-	sm->tk_to_set = 1;
+ 
+ 	kde = sm->assoc_wpa_ie;
+ 	kde_len = sm->assoc_wpa_ie_len;
+@@ -615,7 +614,7 @@
+ 	enum wpa_alg alg;
+ 	const u8 *key_rsc;
+ 
+-	if (!sm->tk_to_set) {
++	if (sm->ptk.installed) {
+ 		wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ 			"WPA: Do not re-install same PTK to the driver");
+ 		return 0;
+@@ -659,7 +658,7 @@
+ 
+ 	/* TK is not needed anymore in supplicant */
+ 	os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN);
+-	sm->tk_to_set = 0;
++	sm->ptk.installed = 1;
+ 
+ 	if (sm->wpa_ptk_rekey) {
+ 		eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL);
+@@ -709,11 +708,23 @@
+ 
+ static int wpa_supplicant_install_gtk(struct wpa_sm *sm,
+ 				      const struct wpa_gtk_data *gd,
+-				      const u8 *key_rsc)
++				      const u8 *key_rsc, int wnm_sleep)
+ {
+ 	const u8 *_gtk = gd->gtk;
+ 	u8 gtk_buf[32];
+ 
++	/* Detect possible key reinstallation */
++	if ((sm->gtk.gtk_len == (size_t) gd->gtk_len &&
++	     os_memcmp(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len) == 0) ||
++	    (sm->gtk_wnm_sleep.gtk_len == (size_t) gd->gtk_len &&
++	     os_memcmp(sm->gtk_wnm_sleep.gtk, gd->gtk,
++		       sm->gtk_wnm_sleep.gtk_len) == 0)) {
++		wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
++			"WPA: Not reinstalling already in-use GTK to the driver (keyidx=%d tx=%d len=%d)",
++			gd->keyidx, gd->tx, gd->gtk_len);
++		return 0;
++	}
++
+ 	wpa_hexdump_key(MSG_DEBUG, "WPA: Group Key", gd->gtk, gd->gtk_len);
+ 	wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ 		"WPA: Installing GTK to the driver (keyidx=%d tx=%d len=%d)",
+@@ -748,6 +759,15 @@
+ 	}
+ 	os_memset(gtk_buf, 0, sizeof(gtk_buf));
+ 
++	if (wnm_sleep) {
++		sm->gtk_wnm_sleep.gtk_len = gd->gtk_len;
++		os_memcpy(sm->gtk_wnm_sleep.gtk, gd->gtk,
++			  sm->gtk_wnm_sleep.gtk_len);
++	} else {
++		sm->gtk.gtk_len = gd->gtk_len;
++		os_memcpy(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len);
++	}
++
+ 	return 0;
+ }
+ 
+@@ -840,7 +860,7 @@
+ 	    (wpa_supplicant_check_group_cipher(sm, sm->group_cipher,
+ 					       gtk_len, gtk_len,
+ 					       &gd.key_rsc_len, &gd.alg) ||
+-	     wpa_supplicant_install_gtk(sm, &gd, key_rsc))) {
++	     wpa_supplicant_install_gtk(sm, &gd, key_rsc, 0))) {
+ 		wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ 			"RSN: Failed to install GTK");
+ 		os_memset(&gd, 0, sizeof(gd));
+@@ -854,6 +874,58 @@
+ }
+ 
+ 
++#ifdef CONFIG_IEEE80211W
++static int wpa_supplicant_install_igtk(struct wpa_sm *sm,
++				       const struct wpa_igtk_kde *igtk,
++				       int wnm_sleep)
++{
++	size_t len = wpa_cipher_key_len(sm->mgmt_group_cipher);
++	u16 keyidx = WPA_GET_LE16(igtk->keyid);
++
++	/* Detect possible key reinstallation */
++	if ((sm->igtk.igtk_len == len &&
++	     os_memcmp(sm->igtk.igtk, igtk->igtk, sm->igtk.igtk_len) == 0) ||
++	    (sm->igtk_wnm_sleep.igtk_len == len &&
++	     os_memcmp(sm->igtk_wnm_sleep.igtk, igtk->igtk,
++		       sm->igtk_wnm_sleep.igtk_len) == 0)) {
++		wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
++			"WPA: Not reinstalling already in-use IGTK to the driver (keyidx=%d)",
++			keyidx);
++		return  0;
++	}
++
++	wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
++		"WPA: IGTK keyid %d pn %02x%02x%02x%02x%02x%02x",
++		keyidx, MAC2STR(igtk->pn));
++	wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK", igtk->igtk, len);
++	if (keyidx > 4095) {
++		wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
++			"WPA: Invalid IGTK KeyID %d", keyidx);
++		return -1;
++	}
++	if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher),
++			   broadcast_ether_addr,
++			   keyidx, 0, igtk->pn, sizeof(igtk->pn),
++			   igtk->igtk, len) < 0) {
++		wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
++			"WPA: Failed to configure IGTK to the driver");
++		return -1;
++	}
++
++	if (wnm_sleep) {
++		sm->igtk_wnm_sleep.igtk_len = len;
++		os_memcpy(sm->igtk_wnm_sleep.igtk, igtk->igtk,
++			  sm->igtk_wnm_sleep.igtk_len);
++	} else {
++		sm->igtk.igtk_len = len;
++		os_memcpy(sm->igtk.igtk, igtk->igtk, sm->igtk.igtk_len);
++	}
++
++	return 0;
++}
++#endif /* CONFIG_IEEE80211W */
++
++
+ static int ieee80211w_set_keys(struct wpa_sm *sm,
+ 			       struct wpa_eapol_ie_parse *ie)
+ {
+@@ -864,30 +936,14 @@
+ 	if (ie->igtk) {
+ 		size_t len;
+ 		const struct wpa_igtk_kde *igtk;
+-		u16 keyidx;
++
+ 		len = wpa_cipher_key_len(sm->mgmt_group_cipher);
+ 		if (ie->igtk_len != WPA_IGTK_KDE_PREFIX_LEN + len)
+ 			return -1;
++
+ 		igtk = (const struct wpa_igtk_kde *) ie->igtk;
+-		keyidx = WPA_GET_LE16(igtk->keyid);
+-		wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: IGTK keyid %d "
+-			"pn %02x%02x%02x%02x%02x%02x",
+-			keyidx, MAC2STR(igtk->pn));
+-		wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK",
+-				igtk->igtk, len);
+-		if (keyidx > 4095) {
+-			wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+-				"WPA: Invalid IGTK KeyID %d", keyidx);
+-			return -1;
+-		}
+-		if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher),
+-				   broadcast_ether_addr,
+-				   keyidx, 0, igtk->pn, sizeof(igtk->pn),
+-				   igtk->igtk, len) < 0) {
+-			wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+-				"WPA: Failed to configure IGTK to the driver");
++		if (wpa_supplicant_install_igtk(sm, igtk, 0) < 0)
+ 			return -1;
+-		}
+ 	}
+ 
+ 	return 0;
+@@ -1536,7 +1592,7 @@
+ 	if (wpa_supplicant_rsc_relaxation(sm, key->key_rsc))
+ 		key_rsc = null_rsc;
+ 
+-	if (wpa_supplicant_install_gtk(sm, &gd, key_rsc) ||
++	if (wpa_supplicant_install_gtk(sm, &gd, key_rsc, 0) ||
+ 	    wpa_supplicant_send_2_of_2(sm, key, ver, key_info) < 0)
+ 		goto failed;
+ 	os_memset(&gd, 0, sizeof(gd));
+@@ -2307,7 +2363,7 @@
+  */
+ void wpa_sm_notify_assoc(struct wpa_sm *sm, const u8 *bssid)
+ {
+-	int clear_ptk = 1;
++	int clear_keys = 1;
+ 
+ 	if (sm == NULL)
+ 		return;
+@@ -2333,11 +2389,11 @@
+ 		/* Prepare for the next transition */
+ 		wpa_ft_prepare_auth_request(sm, NULL);
+ 
+-		clear_ptk = 0;
++		clear_keys = 0;
+ 	}
+ #endif /* CONFIG_IEEE80211R */
+ 
+-	if (clear_ptk) {
++	if (clear_keys) {
+ 		/*
+ 		 * IEEE 802.11, 8.4.10: Delete PTK SA on (re)association if
+ 		 * this is not part of a Fast BSS Transition.
+@@ -2347,6 +2403,12 @@
+ 		os_memset(&sm->ptk, 0, sizeof(sm->ptk));
+ 		sm->tptk_set = 0;
+ 		os_memset(&sm->tptk, 0, sizeof(sm->tptk));
++		os_memset(&sm->gtk, 0, sizeof(sm->gtk));
++		os_memset(&sm->gtk_wnm_sleep, 0, sizeof(sm->gtk_wnm_sleep));
++#ifdef CONFIG_IEEE80211W
++		os_memset(&sm->igtk, 0, sizeof(sm->igtk));
++		os_memset(&sm->igtk_wnm_sleep, 0, sizeof(sm->igtk_wnm_sleep));
++#endif /* CONFIG_IEEE80211W */
+ 	}
+ 
+ #ifdef CONFIG_TDLS
+@@ -2378,6 +2440,9 @@
+ #ifdef CONFIG_TDLS
+ 	wpa_tdls_disassoc(sm);
+ #endif /* CONFIG_TDLS */
++#ifdef CONFIG_IEEE80211R
++	sm->ft_reassoc_completed = 0;
++#endif /* CONFIG_IEEE80211R */
+ 
+ 	/* Keys are not needed in the WPA state machine anymore */
+ 	wpa_sm_drop_sa(sm);
+@@ -2877,6 +2942,12 @@
+ 	os_memset(sm->pmk, 0, sizeof(sm->pmk));
+ 	os_memset(&sm->ptk, 0, sizeof(sm->ptk));
+ 	os_memset(&sm->tptk, 0, sizeof(sm->tptk));
++	os_memset(&sm->gtk, 0, sizeof(sm->gtk));
++	os_memset(&sm->gtk_wnm_sleep, 0, sizeof(sm->gtk_wnm_sleep));
++#ifdef CONFIG_IEEE80211W
++	os_memset(&sm->igtk, 0, sizeof(sm->igtk));
++	os_memset(&sm->igtk_wnm_sleep, 0, sizeof(sm->igtk_wnm_sleep));
++#endif /* CONFIG_IEEE80211W */
+ #ifdef CONFIG_IEEE80211R
+ 	os_memset(sm->xxkey, 0, sizeof(sm->xxkey));
+ 	os_memset(sm->pmk_r0, 0, sizeof(sm->pmk_r0));
+@@ -2940,7 +3011,7 @@
+ 
+ 		wpa_hexdump_key(MSG_DEBUG, "Install GTK (WNM SLEEP)",
+ 				gd.gtk, gd.gtk_len);
+-		if (wpa_supplicant_install_gtk(sm, &gd, key_rsc)) {
++		if (wpa_supplicant_install_gtk(sm, &gd, key_rsc, 1)) {
+ 			os_memset(&gd, 0, sizeof(gd));
+ 			wpa_printf(MSG_DEBUG, "Failed to install the GTK in "
+ 				   "WNM mode");
+@@ -2949,29 +3020,11 @@
+ 		os_memset(&gd, 0, sizeof(gd));
+ #ifdef CONFIG_IEEE80211W
+ 	} else if (subelem_id == WNM_SLEEP_SUBELEM_IGTK) {
+-		struct wpa_igtk_kde igd;
+-		u16 keyidx;
++		const struct wpa_igtk_kde *igtk;
+ 
+-		os_memset(&igd, 0, sizeof(igd));
+-		keylen = wpa_cipher_key_len(sm->mgmt_group_cipher);
+-		os_memcpy(igd.keyid, buf + 2, 2);
+-		os_memcpy(igd.pn, buf + 4, 6);
+-
+-		keyidx = WPA_GET_LE16(igd.keyid);
+-		os_memcpy(igd.igtk, buf + 10, keylen);
+-
+-		wpa_hexdump_key(MSG_DEBUG, "Install IGTK (WNM SLEEP)",
+-				igd.igtk, keylen);
+-		if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher),
+-				   broadcast_ether_addr,
+-				   keyidx, 0, igd.pn, sizeof(igd.pn),
+-				   igd.igtk, keylen) < 0) {
+-			wpa_printf(MSG_DEBUG, "Failed to install the IGTK in "
+-				   "WNM mode");
+-			os_memset(&igd, 0, sizeof(igd));
++		igtk = (const struct wpa_igtk_kde *) (buf + 2);
++		if (wpa_supplicant_install_igtk(sm, igtk, 1) < 0)
+ 			return -1;
+-		}
+-		os_memset(&igd, 0, sizeof(igd));
+ #endif /* CONFIG_IEEE80211W */
+ 	} else {
+ 		wpa_printf(MSG_DEBUG, "Unknown element id");
+diff -ruN wpa_supplicant-2.6/src/rsn_supp/wpa_ft.c wpa_supplicant-2.6-krack1/src/rsn_supp/wpa_ft.c
+--- wpa_supplicant-2.6/src/rsn_supp/wpa_ft.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/rsn_supp/wpa_ft.c	2017-10-16 17:55:23.280746653 +0200
+@@ -153,6 +153,7 @@
+ 	u16 capab;
+ 
+ 	sm->ft_completed = 0;
++	sm->ft_reassoc_completed = 0;
+ 
+ 	buf_len = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
+ 		2 + sm->r0kh_id_len + ric_ies_len + 100;
+@@ -681,6 +682,11 @@
+ 		return -1;
+ 	}
+ 
++	if (sm->ft_reassoc_completed) {
++		wpa_printf(MSG_DEBUG, "FT: Reassociation has already been completed for this FT protocol instance - ignore unexpected retransmission");
++		return 0;
++	}
++
+ 	if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
+ 		wpa_printf(MSG_DEBUG, "FT: Failed to parse IEs");
+ 		return -1;
+@@ -781,6 +787,8 @@
+ 		return -1;
+ 	}
+ 
++	sm->ft_reassoc_completed = 1;
++
+ 	if (wpa_ft_process_gtk_subelem(sm, parse.gtk, parse.gtk_len) < 0)
+ 		return -1;
+ 
+diff -ruN wpa_supplicant-2.6/src/rsn_supp/wpa_i.h wpa_supplicant-2.6-krack1/src/rsn_supp/wpa_i.h
+--- wpa_supplicant-2.6/src/rsn_supp/wpa_i.h	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/src/rsn_supp/wpa_i.h	2017-10-16 17:55:23.280746653 +0200
+@@ -24,13 +24,18 @@
+ 	struct wpa_ptk ptk, tptk;
+ 	int ptk_set, tptk_set;
+ 	unsigned int msg_3_of_4_ok:1;
+-	unsigned int tk_to_set:1;
+ 	u8 snonce[WPA_NONCE_LEN];
+ 	u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
+ 	int renew_snonce;
+ 	u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
+ 	int rx_replay_counter_set;
+ 	u8 request_counter[WPA_REPLAY_COUNTER_LEN];
++	struct wpa_gtk gtk;
++	struct wpa_gtk gtk_wnm_sleep;
++#ifdef CONFIG_IEEE80211W
++	struct wpa_igtk igtk;
++	struct wpa_igtk igtk_wnm_sleep;
++#endif /* CONFIG_IEEE80211W */
+ 
+ 	struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
+ 
+@@ -123,6 +128,7 @@
+ 	size_t r0kh_id_len;
+ 	u8 r1kh_id[FT_R1KH_ID_LEN];
+ 	int ft_completed;
++	int ft_reassoc_completed;
+ 	int over_the_ds_in_progress;
+ 	u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */
+ 	int set_ptk_after_assoc;
+diff -ruN wpa_supplicant-2.6/wpa_supplicant/wnm_sta.c wpa_supplicant-2.6-krack1/wpa_supplicant/wnm_sta.c
+--- wpa_supplicant-2.6/wpa_supplicant/wnm_sta.c	2016-10-02 20:51:11.000000000 +0200
++++ wpa_supplicant-2.6-krack1/wpa_supplicant/wnm_sta.c	2017-10-16 17:51:00.652711482 +0200
+@@ -260,7 +260,7 @@
+ 
+ 	if (!wpa_s->wnmsleep_used) {
+ 		wpa_printf(MSG_DEBUG,
+-			   "WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode has not been used in this association");
++			   "WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode operation has not been requested");
+ 		return;
+ 	}
+ 
+@@ -299,6 +299,8 @@
+ 		return;
+ 	}
+ 
++	wpa_s->wnmsleep_used = 0;
++
+ 	if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
+ 	    wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
+ 		wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "


More information about the patches mailing list