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ie: Don't fail RSNE parsing with unknown AKMs

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This commit is contained in:
Denis Kenzior 2018-07-19 10:36:18 -05:00
parent c37146d403
commit 438af4aebc
1 changed files with 26 additions and 16 deletions
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42
src/ie.c
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@ -408,7 +408,7 @@ static bool ie_parse_cipher_suite(const uint8_t *data,
}
/* 802.11, Section 8.4.2.27.2 */
static bool ie_parse_akm_suite(const uint8_t *data,
static int ie_parse_akm_suite(const uint8_t *data,
enum ie_rsn_akm_suite *out)
{
/*
@ -418,39 +418,41 @@ static bool ie_parse_akm_suite(const uint8_t *data,
if (!memcmp(data, ieee_oui, 3)) {
/* Suite type from Table 8-101 */
switch (data[3]) {
case 0:
return -EINVAL;
case 1:
*out = IE_RSN_AKM_SUITE_8021X;
return true;
return 0;
case 2:
*out = IE_RSN_AKM_SUITE_PSK;
return true;
return 0;
case 3:
*out = IE_RSN_AKM_SUITE_FT_OVER_8021X;
return true;
return 0;
case 4:
*out = IE_RSN_AKM_SUITE_FT_USING_PSK;
return true;
return 0;
case 5:
*out = IE_RSN_AKM_SUITE_8021X_SHA256;
return true;
return 0;
case 6:
*out = IE_RSN_AKM_SUITE_PSK_SHA256;
return true;
return 0;
case 7:
*out = IE_RSN_AKM_SUITE_TDLS;
return true;
return 0;
case 8:
*out = IE_RSN_AKM_SUITE_SAE_SHA256;
return true;
return 0;
case 9:
*out = IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256;
return true;
return 0;
default:
return false;
return -ENOENT;
}
}
return false;
return -ENOENT;
}
static bool ie_parse_group_cipher(const uint8_t *data,
@ -612,11 +614,19 @@ int ie_parse_rsne(struct ie_tlv_iter *iter, struct ie_rsn_info *out_info)
/* Parse AKM Suite List field */
for (i = 0, info.akm_suites = 0; i < count; i++) {
enum ie_rsn_akm_suite suite;
int ret;
if (!ie_parse_akm_suite(data + i * 4, &suite))
return -ERANGE;
info.akm_suites |= suite;
ret = ie_parse_akm_suite(data + i * 4, &suite);
switch (ret) {
case 0:
info.akm_suites |= suite;
break;
case -ENOENT:
/* Skip unknown or vendor specific AKMs */
break;
default:
return -EBADMSG;
}
}
RSNE_ADVANCE(data, len, count * 4);