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mpdu: Validate probe response mpdu subtype

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We do not currently validate the IEs that are following until the end
of the frame
This commit is contained in:
Tomasz Bursztyka 2015-01-21 13:36:46 +02:00 committed by Denis Kenzior
parent cc1cc64843
commit 8078f18c35
2 changed files with 13 additions and 0 deletions
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3
src/mpdu.c
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@ -130,6 +130,9 @@ static bool validate_mgmt_mpdu(const struct mpdu *mpdu, int len, int *offset)
case MPDU_MANAGEMENT_SUBTYPE_PROBE_REQUEST: case MPDU_MANAGEMENT_SUBTYPE_PROBE_REQUEST:
return validate_on_ies_start_position_mgmt_mpdu(mpdu, len, return validate_on_ies_start_position_mgmt_mpdu(mpdu, len,
offset, 0); offset, 0);
case MPDU_MANAGEMENT_SUBTYPE_PROBE_RESPONSE:
return validate_on_ies_start_position_mgmt_mpdu(mpdu, len,
offset, 5);
case MPDU_MANAGEMENT_SUBTYPE_ATIM: case MPDU_MANAGEMENT_SUBTYPE_ATIM:
return validate_atim_mgmt_mpdu(mpdu, len, offset); return validate_atim_mgmt_mpdu(mpdu, len, offset);
case MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION: case MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION:

10
src/mpdu.h
View File

@ -37,6 +37,7 @@ enum mpdu_management_subtype {
MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_REQUEST = 0x2, MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_REQUEST = 0x2,
MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_RESPONSE = 0x3, MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_RESPONSE = 0x3,
MPDU_MANAGEMENT_SUBTYPE_PROBE_REQUEST = 0x4, MPDU_MANAGEMENT_SUBTYPE_PROBE_REQUEST = 0x4,
MPDU_MANAGEMENT_SUBTYPE_PROBE_RESPONSE = 0x5,
MPDU_MANAGEMENT_SUBTYPE_ATIM = 0x9, MPDU_MANAGEMENT_SUBTYPE_ATIM = 0x9,
MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION = 0xA, MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION = 0xA,
MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION = 0xB, MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION = 0xB,
@ -185,6 +186,14 @@ struct mpdu_probe_request {
uint8_t ies[0]; uint8_t ies[0];
} __attribute__ ((packed)); } __attribute__ ((packed));
/* 802.11, Section 8.3.3.10 */
struct mpdu_probe_response {
uint8_t timestamp;
__le16 beacon_interval;
struct mpdu_field_capability capability;
uint8_t ies[0];
} __attribute__ ((packed));
/* 802.11, Section 8.3.3.11 */ /* 802.11, Section 8.3.3.11 */
struct mpdu_authentication { struct mpdu_authentication {
__le16 algorithm; __le16 algorithm;
@ -216,6 +225,7 @@ struct mpdu {
struct mpdu_reassociation_request reassoc_req; struct mpdu_reassociation_request reassoc_req;
struct mpdu_reassociation_response reassoc_resp; struct mpdu_reassociation_response reassoc_resp;
struct mpdu_probe_request probe_req; struct mpdu_probe_request probe_req;
struct mpdu_probe_response probe_resp;
struct mpdu_disassociation disassoc; struct mpdu_disassociation disassoc;
struct mpdu_authentication auth; struct mpdu_authentication auth;
struct mpdu_deauthentication deauth; struct mpdu_deauthentication deauth;