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wpa_supplicant: Fix issues reported by coverity

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This commit is contained in:
Kapil Gupta
2022-04-26 15:23:43 +05:30
parent adb04c5ab1
commit f070e2db6d
13 changed files with 49 additions and 166 deletions
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63
components/wpa_supplicant/src/ap/wpa_auth.c
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@@ -585,8 +585,7 @@ void wpa_receive(struct wpa_authenticator *wpa_auth, struct wpa_state_machine *s
struct ieee802_1x_hdr *hdr;
struct wpa_eapol_key *key;
u16 key_info, key_data_length;
enum { PAIRWISE_2, PAIRWISE_4, GROUP_2, REQUEST,
SMK_M1, SMK_M3, SMK_ERROR } msg;
enum { PAIRWISE_2, PAIRWISE_4, GROUP_2, REQUEST } msg;
struct wpa_eapol_ie_parse kde;
int ft;
const u8 *eapol_key_ie;
@@ -645,16 +644,12 @@ void wpa_receive(struct wpa_authenticator *wpa_auth, struct wpa_state_machine *s
/* FIX: verify that the EAPOL-Key frame was encrypted if pairwise keys
* are set */
if ((key_info & (WPA_KEY_INFO_SMK_MESSAGE | WPA_KEY_INFO_REQUEST)) ==
(WPA_KEY_INFO_SMK_MESSAGE | WPA_KEY_INFO_REQUEST)) {
if (key_info & WPA_KEY_INFO_ERROR) {
msg = SMK_ERROR;
} else {
msg = SMK_M1;
}
} else if (key_info & WPA_KEY_INFO_SMK_MESSAGE) {
msg = SMK_M3;
} else if (key_info & WPA_KEY_INFO_REQUEST) {
if (key_info & WPA_KEY_INFO_SMK_MESSAGE) {
wpa_printf(MSG_DEBUG, "WPA: Ignore SMK message");
return;
}
if (key_info & WPA_KEY_INFO_REQUEST) {
msg = REQUEST;
} else if (!(key_info & WPA_KEY_INFO_KEY_TYPE)) {
msg = GROUP_2;
@@ -664,7 +659,6 @@ void wpa_receive(struct wpa_authenticator *wpa_auth, struct wpa_state_machine *s
msg = PAIRWISE_2;
}
/* TODO: key_info type validation for PeerKey */
if (msg == REQUEST || msg == PAIRWISE_2 || msg == PAIRWISE_4 ||
msg == GROUP_2) {
u16 ver = key_info & WPA_KEY_INFO_TYPE_MASK;
@@ -805,25 +799,6 @@ continue_processing:
return;
}
break;
#ifdef CONFIG_PEERKEY
case SMK_M1:
case SMK_M3:
case SMK_ERROR:
if (!wpa_auth->conf.peerkey) {
wpa_printf( MSG_DEBUG, "RSN: SMK M1/M3/Error, but "
"PeerKey use disabled - ignoring message");
return;
}
if (!sm->PTK_valid) {
return;
}
break;
#else /* CONFIG_PEERKEY */
case SMK_M1:
case SMK_M3:
case SMK_ERROR:
return; /* STSL disabled - ignore SMK messages */
#endif /* CONFIG_PEERKEY */
case REQUEST:
break;
}
@@ -864,22 +839,13 @@ continue_processing:
* even though MAC address KDE is not normally encrypted,
* supplicant is allowed to encrypt it.
*/
if (msg == SMK_ERROR) {
#ifdef CONFIG_PEERKEY
wpa_smk_error(wpa_auth, sm, key);
#endif /* CONFIG_PEERKEY */
return;
} else if (key_info & WPA_KEY_INFO_ERROR) {
if (key_info & WPA_KEY_INFO_ERROR) {
if (wpa_receive_error_report(
wpa_auth, sm,
!(key_info & WPA_KEY_INFO_KEY_TYPE)) > 0)
return; /* STA entry was removed */
} else if (key_info & WPA_KEY_INFO_KEY_TYPE) {
wpa_request_new_ptk(sm);
#ifdef CONFIG_PEERKEY
} else if (msg == SMK_M1) {
wpa_smk_m1(wpa_auth, sm, key);
#endif /* CONFIG_PEERKEY */
} else if (key_data_length > 0 &&
wpa_parse_kde_ies((const u8 *) (key + 1),
key_data_length, &kde) == 0 &&
@@ -915,13 +881,6 @@ continue_processing:
wpa_replay_counter_mark_invalid(sm->key_replay, NULL);
}
#ifdef CONFIG_PEERKEY
if (msg == SMK_M3) {
wpa_smk_m3(wpa_auth, sm, key);
return;
}
#endif /* CONFIG_PEERKEY */
wpa_printf( MSG_DEBUG, "wpa_rx: free eapol=%p\n", sm->last_rx_eapol_key);
os_free(sm->last_rx_eapol_key);
sm->last_rx_eapol_key = (u8 *)os_malloc(data_len);
@@ -1053,11 +1012,11 @@ void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
WPA_PUT_BE16(key->key_info, key_info);
alg = pairwise ? sm->pairwise : wpa_auth->conf.wpa_group;
WPA_PUT_BE16(key->key_length, wpa_cipher_key_len(alg));
if (key_info & WPA_KEY_INFO_SMK_MESSAGE)
if (sm->wpa == WPA_VERSION_WPA2 && !pairwise)
WPA_PUT_BE16(key->key_length, 0);
else
WPA_PUT_BE16(key->key_length, wpa_cipher_key_len(alg));
/* FIX: STSL: what to use as key_replay_counter? */
for (i = RSNA_MAX_EAPOL_RETRIES - 1; i > 0; i--) {
sm->key_replay[i].valid = sm->key_replay[i - 1].valid;
memcpy(sm->key_replay[i].counter,