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https://github.com/vanhoefm/fragattacks.git
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6fb7b58fe4
It is possible for the driver to report EAPOL frame RX before Authentication frame RX even if the frames arrived in the opposite order. This can result in issues in cases where both IBSS peers initiate Authentication frame exchange at about the same time and one of the EAPOL sessions is started before processing Authentication frame seq=1 RX. Work around this by not re-initializing EAPOL state on Authentication (SEQ=1) RX if own Authentication frame was transmitted within last 500 ms. Signed-hostap: Jouni Malinen <j@w1.fi>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* wpa_supplicant - IBSS RSN
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* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef IBSS_RSN_H
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#define IBSS_RSN_H
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struct ibss_rsn;
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/* not authenticated */
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#define IBSS_RSN_AUTH_NOT_AUTHENTICATED 0x00
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/* remote peer sent an EAPOL message */
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#define IBSS_RSN_AUTH_EAPOL_BY_PEER 0x01
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/* we sent an AUTH message with seq 1 */
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#define IBSS_RSN_AUTH_BY_US 0x02
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/* we sent an EAPOL message */
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#define IBSS_RSN_AUTH_EAPOL_BY_US 0x04
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/* PTK derived as supplicant */
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#define IBSS_RSN_SET_PTK_SUPP 0x08
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/* PTK derived as authenticator */
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#define IBSS_RSN_SET_PTK_AUTH 0x10
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/* PTK completion reported */
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#define IBSS_RSN_REPORTED_PTK 0x20
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struct ibss_rsn_peer {
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struct ibss_rsn_peer *next;
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struct ibss_rsn *ibss_rsn;
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u8 addr[ETH_ALEN];
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struct wpa_sm *supp;
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enum wpa_states supp_state;
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u8 supp_ie[80];
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size_t supp_ie_len;
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struct wpa_state_machine *auth;
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int authentication_status;
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struct os_time own_auth_tx;
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};
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struct ibss_rsn {
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struct wpa_supplicant *wpa_s;
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struct wpa_authenticator *auth_group;
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struct ibss_rsn_peer *peers;
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u8 psk[PMK_LEN];
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};
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struct ibss_rsn * ibss_rsn_init(struct wpa_supplicant *wpa_s);
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void ibss_rsn_deinit(struct ibss_rsn *ibss_rsn);
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int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr);
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void ibss_rsn_stop(struct ibss_rsn *ibss_rsn, const u8 *peermac);
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int ibss_rsn_rx_eapol(struct ibss_rsn *ibss_rsn, const u8 *src_addr,
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const u8 *buf, size_t len);
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void ibss_rsn_set_psk(struct ibss_rsn *ibss_rsn, const u8 *psk);
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void ibss_rsn_handle_auth(struct ibss_rsn *ibss_rsn, const u8 *auth_frame,
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size_t len);
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#endif /* IBSS_RSN_H */
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