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eapol: Handle FT-version of step 3 of 4-way handshake

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Andrew Zaborowski 2016-11-02 23:46:14 +01:00 committed by Denis Kenzior
parent 9d54a3082e
commit d03f4d72f1
1 changed files with 47 additions and 22 deletions
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69
src/eapol.c
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@ -1349,14 +1349,43 @@ static void eapol_handle_ptk_3_of_4(uint32_t ifindex,
rsne = eapol_find_wpa_ie(decrypted_key_data, rsne = eapol_find_wpa_ie(decrypted_key_data,
decrypted_key_data_size); decrypted_key_data_size);
if (!rsne) { if (!rsne)
handshake_failed(ifindex, sm, MPDU_REASON_CODE_IE_DIFFERENT); goto error_ie_different;
return;
}
if (!eapol_ap_ie_matches(rsne, sm->ap_ie, sm->wpa_ie)) { if (!eapol_ap_ie_matches(rsne, sm->ap_ie, sm->wpa_ie))
handshake_failed(ifindex, sm, MPDU_REASON_CODE_IE_DIFFERENT); goto error_ie_different;
return;
if (sm->akm_suite & (IE_RSN_AKM_SUITE_FT_OVER_8021X |
IE_RSN_AKM_SUITE_FT_USING_PSK |
IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256)) {
struct ie_tlv_iter iter;
struct ie_rsn_info ie_info;
ie_parse_rsne_from_data(rsne, rsne[1] + 2, &ie_info);
if (ie_info.num_pmkids != 1 || memcmp(ie_info.pmkids,
sm->pmk_r1_name, 16))
goto error_ie_different;
ie_tlv_iter_init(&iter, decrypted_key_data,
decrypted_key_data_size);
while (ie_tlv_iter_next(&iter))
switch (ie_tlv_iter_get_tag(&iter)) {
case IE_TYPE_MOBILITY_DOMAIN:
if (memcmp(ie_tlv_iter_get_data(&iter) - 2,
sm->mde, sm->mde[1] + 2))
goto error_ie_different;
break;
case IE_TYPE_FAST_BSS_TRANSITION:
if (memcmp(ie_tlv_iter_get_data(&iter) - 2,
sm->fte, sm->fte[1] + 2))
goto error_ie_different;
break;
}
} }
/* /*
@ -1369,18 +1398,12 @@ static void eapol_handle_ptk_3_of_4(uint32_t ifindex,
struct ie_rsn_info info2; struct ie_rsn_info info2;
uint16_t override; uint16_t override;
if (ie_parse_rsne_from_data(rsne, rsne[1] + 2, &info1) < 0) { if (ie_parse_rsne_from_data(rsne, rsne[1] + 2, &info1) < 0)
handshake_failed(ifindex, sm, goto error_ie_different;
MPDU_REASON_CODE_IE_DIFFERENT);
return;
}
if (ie_parse_rsne_from_data(optional_rsne, optional_rsne[1] + 2, if (ie_parse_rsne_from_data(optional_rsne, optional_rsne[1] + 2,
&info2) < 0) { &info2) < 0)
handshake_failed(ifindex, sm, goto error_ie_different;
MPDU_REASON_CODE_IE_DIFFERENT);
return;
}
/* /*
* 11.6.2: * 11.6.2:
@ -1402,11 +1425,8 @@ static void eapol_handle_ptk_3_of_4(uint32_t ifindex,
* - Check that rsne2 pairwise_ciphers is a subset of rsne * - Check that rsne2 pairwise_ciphers is a subset of rsne
*/ */
if (info1.akm_suites != info2.akm_suites || if (info1.akm_suites != info2.akm_suites ||
info1.group_cipher != info2.group_cipher) { info1.group_cipher != info2.group_cipher)
handshake_failed(ifindex, sm, goto error_ie_different;
MPDU_REASON_CODE_IE_DIFFERENT);
return;
}
override = info2.pairwise_ciphers; override = info2.pairwise_ciphers;
@ -1506,6 +1526,11 @@ static void eapol_handle_ptk_3_of_4(uint32_t ifindex,
fail: fail:
l_free(step4); l_free(step4);
return;
error_ie_different:
handshake_failed(ifindex, sm, MPDU_REASON_CODE_IE_DIFFERENT);
} }
static void eapol_handle_gtk_1_of_2(uint32_t ifindex, static void eapol_handle_gtk_1_of_2(uint32_t ifindex,