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Enforce MAC/ENCRYPT capability checks
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Fix #2944.

This also adds back relevant unit tests that were removed in #2933.

Signed-off-by: Steven Bellock <sbellock@nvidia.com>
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@steven-bellock
steven-bellock committed Jan 6, 2025
1 parent 48cc0b3 commit e08de37
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Showing 4 changed files with 245 additions and 12 deletions.
8 changes: 6 additions & 2 deletions library/spdm_requester_lib/libspdm_req_get_capabilities.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2024 DMTF. All rights reserved.
* Copyright 2021-2025 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -79,7 +79,11 @@ static bool validate_responder_capability(uint32_t capabilities_flag, uint8_t ve
}

/* Checks that originate from key exchange capabilities. */
if ((key_ex_cap == 0) && (psk_cap == 0)) {
if ((key_ex_cap == 1) || (psk_cap != 0)) {
if ((mac_cap == 0) && (encrypt_cap == 0)) {
return false;
}
} else {
if ((mac_cap == 1) || (encrypt_cap == 1) || (handshake_in_the_clear_cap == 1) ||
(hbeat_cap == 1) || (key_upd_cap == 1)) {
return false;
Expand Down
8 changes: 6 additions & 2 deletions library/spdm_responder_lib/libspdm_rsp_capabilities.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2024 DMTF. All rights reserved.
* Copyright 2021-2025 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -71,7 +71,11 @@ static bool libspdm_check_request_flag_compatibility(uint32_t capabilities_flag,
}

/* Checks that originate from key exchange capabilities. */
if ((key_ex_cap == 0) && (psk_cap == 0)) {
if ((key_ex_cap == 1) || (psk_cap != 0)) {
if ((mac_cap == 0) && (encrypt_cap == 0)) {
return false;
}
} else {
if ((mac_cap == 1) || (encrypt_cap == 1) || (handshake_in_the_clear_cap == 1) ||
(hbeat_cap == 1) || (key_upd_cap == 1)) {
return false;
Expand Down
181 changes: 176 additions & 5 deletions unit_test/test_spdm_requester/error_test/get_capabilities_err.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2022 DMTF. All rights reserved.
* Copyright 2021-2025 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -592,13 +592,94 @@ static libspdm_return_t libspdm_requester_get_capabilities_test_receive_message(
}
return LIBSPDM_STATUS_SUCCESS;

case 0x14:
case 0x14: {
spdm_capabilities_response_t *spdm_response;
size_t spdm_response_size;
size_t transport_header_size;

spdm_response_size = sizeof(spdm_capabilities_response_t);
transport_header_size = LIBSPDM_TEST_TRANSPORT_HEADER_SIZE;
spdm_response = (void *)((uint8_t *)*response + transport_header_size);

libspdm_zero_mem(spdm_response, spdm_response_size);
spdm_response->header.spdm_version = SPDM_MESSAGE_VERSION_11;
spdm_response->header.request_response_code = SPDM_CAPABILITIES;
spdm_response->header.param1 = 0;
spdm_response->header.param2 = 0;
spdm_response->ct_exponent = 0;
spdm_response->flags =
LIBSPDM_DEFAULT_CAPABILITY_RESPONSE_FLAG_VERSION_11 &
(0xFFFFFFFF ^
(SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_ENCRYPT_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_MAC_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_HANDSHAKE_IN_THE_CLEAR_CAP));

libspdm_transport_test_encode_message(spdm_context, NULL, false,
false, spdm_response_size,
spdm_response,
response_size, response);
}
return LIBSPDM_STATUS_SUCCESS;

case 0x15:
case 0x15: {
spdm_capabilities_response_t *spdm_response;
size_t spdm_response_size;
size_t transport_header_size;

spdm_response_size = sizeof(spdm_capabilities_response_t);
transport_header_size = LIBSPDM_TEST_TRANSPORT_HEADER_SIZE;
spdm_response = (void *)((uint8_t *)*response + transport_header_size);

libspdm_zero_mem(spdm_response, spdm_response_size);
spdm_response->header.spdm_version = SPDM_MESSAGE_VERSION_11;
spdm_response->header.request_response_code = SPDM_CAPABILITIES;
spdm_response->header.param1 = 0;
spdm_response->header.param2 = 0;
spdm_response->ct_exponent = 0;
spdm_response->flags =
LIBSPDM_DEFAULT_CAPABILITY_RESPONSE_FLAG_VERSION_11 &
(0xFFFFFFFF ^
(SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_ENCRYPT_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_MAC_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_PSK_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_HANDSHAKE_IN_THE_CLEAR_CAP));

libspdm_transport_test_encode_message(spdm_context, NULL, false,
false, spdm_response_size,
spdm_response,
response_size, response);
}
return LIBSPDM_STATUS_SUCCESS;

case 0x16:

case 0x16: {
spdm_capabilities_response_t *spdm_response;
size_t spdm_response_size;
size_t transport_header_size;

spdm_response_size = sizeof(spdm_capabilities_response_t);
transport_header_size = LIBSPDM_TEST_TRANSPORT_HEADER_SIZE;
spdm_response = (void *)((uint8_t *)*response + transport_header_size);

libspdm_zero_mem(spdm_response, spdm_response_size);
spdm_response->header.spdm_version = SPDM_MESSAGE_VERSION_11;
spdm_response->header.request_response_code = SPDM_CAPABILITIES;
spdm_response->header.param1 = 0;
spdm_response->header.param2 = 0;
spdm_response->ct_exponent = 0;
spdm_response->flags =
LIBSPDM_DEFAULT_CAPABILITY_RESPONSE_FLAG_VERSION_11 &
(0xFFFFFFFF ^
(SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_ENCRYPT_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_MAC_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_KEY_EX_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_HANDSHAKE_IN_THE_CLEAR_CAP));

libspdm_transport_test_encode_message(spdm_context, NULL, false,
false, spdm_response_size,
spdm_response,
response_size, response);
}
return LIBSPDM_STATUS_SUCCESS;

case 0x17: {
Expand Down Expand Up @@ -655,7 +736,33 @@ static libspdm_return_t libspdm_requester_get_capabilities_test_receive_message(
}
return LIBSPDM_STATUS_SUCCESS;

case 0x19:
case 0x19: {
spdm_capabilities_response_t *spdm_response;
size_t spdm_response_size;
size_t transport_header_size;

spdm_response_size = sizeof(spdm_capabilities_response_t);
transport_header_size = LIBSPDM_TEST_TRANSPORT_HEADER_SIZE;
spdm_response = (void *)((uint8_t *)*response + transport_header_size);

libspdm_zero_mem(spdm_response, spdm_response_size);
spdm_response->header.spdm_version = SPDM_MESSAGE_VERSION_11;
spdm_response->header.request_response_code = SPDM_CAPABILITIES;
spdm_response->header.param1 = 0;
spdm_response->header.param2 = 0;
spdm_response->ct_exponent = 0;
spdm_response->flags =
LIBSPDM_DEFAULT_CAPABILITY_RESPONSE_FLAG_VERSION_11 &
(0xFFFFFFFF ^
(SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_ENCRYPT_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_MAC_CAP |
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_PSK_CAP));

libspdm_transport_test_encode_message(spdm_context, NULL, false,
false, spdm_response_size,
spdm_response,
response_size, response);
}
return LIBSPDM_STATUS_SUCCESS;

case 0x1a: {
Expand Down Expand Up @@ -1394,14 +1501,62 @@ static void libspdm_test_requester_get_capabilities_err_case19(void **state)

static void libspdm_test_requester_get_capabilities_err_case20(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x14;
spdm_context->connection_info.version = SPDM_MESSAGE_VERSION_11 <<
SPDM_VERSION_NUMBER_SHIFT_BIT;
spdm_context->connection_info.connection_state = LIBSPDM_CONNECTION_STATE_AFTER_VERSION;
libspdm_reset_message_a(spdm_context);

spdm_context->local_context.capability.ct_exponent = 0;
spdm_context->local_context.capability.flags = LIBSPDM_DEFAULT_CAPABILITY_FLAG_VERSION_11;
status = libspdm_get_capabilities(spdm_context);
assert_int_equal(status, LIBSPDM_STATUS_INVALID_MSG_FIELD);
}

static void libspdm_test_requester_get_capabilities_err_case21(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x15;
spdm_context->connection_info.version = SPDM_MESSAGE_VERSION_11 <<
SPDM_VERSION_NUMBER_SHIFT_BIT;
spdm_context->connection_info.connection_state = LIBSPDM_CONNECTION_STATE_AFTER_VERSION;
libspdm_reset_message_a(spdm_context);

spdm_context->local_context.capability.ct_exponent = 0;
spdm_context->local_context.capability.flags = LIBSPDM_DEFAULT_CAPABILITY_FLAG_VERSION_11;
status = libspdm_get_capabilities(spdm_context);
assert_int_equal(status, LIBSPDM_STATUS_INVALID_MSG_FIELD);
}

static void libspdm_test_requester_get_capabilities_err_case22(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x16;
spdm_context->connection_info.version = SPDM_MESSAGE_VERSION_11 <<
SPDM_VERSION_NUMBER_SHIFT_BIT;
spdm_context->connection_info.connection_state = LIBSPDM_CONNECTION_STATE_AFTER_VERSION;
libspdm_reset_message_a(spdm_context);

spdm_context->local_context.capability.ct_exponent = 0;
spdm_context->local_context.capability.flags = LIBSPDM_DEFAULT_CAPABILITY_FLAG_VERSION_11;
status = libspdm_get_capabilities(spdm_context);
assert_int_equal(status, LIBSPDM_STATUS_INVALID_MSG_FIELD);
}

static void libspdm_test_requester_get_capabilities_err_case23(void **state)
Expand Down Expand Up @@ -1450,6 +1605,22 @@ static void libspdm_test_requester_get_capabilities_err_case24(void **state)

static void libspdm_test_requester_get_capabilities_err_case25(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x19;
spdm_context->connection_info.version = SPDM_MESSAGE_VERSION_11 <<
SPDM_VERSION_NUMBER_SHIFT_BIT;
spdm_context->connection_info.connection_state = LIBSPDM_CONNECTION_STATE_AFTER_VERSION;
libspdm_reset_message_a(spdm_context);

spdm_context->local_context.capability.ct_exponent = 0;
spdm_context->local_context.capability.flags = LIBSPDM_DEFAULT_CAPABILITY_FLAG_VERSION_11;
status = libspdm_get_capabilities(spdm_context);
assert_int_equal(status, LIBSPDM_STATUS_INVALID_MSG_FIELD);
}

static void libspdm_test_requester_get_capabilities_err_case26(void **state)
Expand Down
60 changes: 57 additions & 3 deletions unit_test/test_spdm_responder/capabilities.c
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2022 DMTF. All rights reserved.
* Copyright 2021-2025 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -837,10 +837,64 @@ void libspdm_test_responder_capabilities_case15(void **state)

void libspdm_test_responder_capabilities_case16(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;
size_t response_size;
uint8_t response[LIBSPDM_MAX_SPDM_MSG_SIZE];
spdm_capabilities_response_t *spdm_response;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x10;
spdm_context->connection_info.connection_state =
LIBSPDM_CONNECTION_STATE_AFTER_VERSION;

response_size = sizeof(response);
status = libspdm_get_response_capabilities(
spdm_context, m_libspdm_get_capabilities_request12_size,
&m_libspdm_get_capabilities_request12, &response_size, response);
assert_int_equal(status, LIBSPDM_STATUS_SUCCESS);
assert_int_equal(response_size, sizeof(spdm_error_response_t));
spdm_response = (void *)response;
assert_int_equal(m_libspdm_get_capabilities_request12.header.spdm_version,
spdm_response->header.spdm_version);
assert_int_equal(spdm_response->header.request_response_code,
SPDM_ERROR);
assert_int_equal(spdm_response->header.param1,
SPDM_ERROR_CODE_INVALID_REQUEST);
assert_int_equal(spdm_response->header.param2, 0);
}

void libspdm_test_responder_capabilities_case17(void **state)
{
libspdm_return_t status;
libspdm_test_context_t *spdm_test_context;
libspdm_context_t *spdm_context;
size_t response_size;
uint8_t response[LIBSPDM_MAX_SPDM_MSG_SIZE];
spdm_capabilities_response_t *spdm_response;

spdm_test_context = *state;
spdm_context = spdm_test_context->spdm_context;
spdm_test_context->case_id = 0x11;
spdm_context->connection_info.connection_state =
LIBSPDM_CONNECTION_STATE_AFTER_VERSION;

response_size = sizeof(response);
status = libspdm_get_response_capabilities(
spdm_context, m_libspdm_get_capabilities_request13_size,
&m_libspdm_get_capabilities_request13, &response_size, response);
assert_int_equal(status, LIBSPDM_STATUS_SUCCESS);
assert_int_equal(response_size, sizeof(spdm_error_response_t));
spdm_response = (void *)response;
assert_int_equal(m_libspdm_get_capabilities_request13.header.spdm_version,
spdm_response->header.spdm_version);
assert_int_equal(spdm_response->header.request_response_code,
SPDM_ERROR);
assert_int_equal(spdm_response->header.param1,
SPDM_ERROR_CODE_INVALID_REQUEST);
assert_int_equal(spdm_response->header.param2, 0);
}

void libspdm_test_responder_capabilities_case18(void **state)
Expand Down Expand Up @@ -1173,9 +1227,9 @@ int libspdm_responder_capabilities_test_main(void)
cmocka_unit_test(libspdm_test_responder_capabilities_case14),
/* mac_cap set and key_ex_cap and psk_cap cleared (mac_cap demands key_ex_cap or psk_cap to be set)*/
cmocka_unit_test(libspdm_test_responder_capabilities_case15),
/* Open test case */
/* key_ex_cap set and encrypt_cap and mac_cap cleared (key_ex_cap demands encrypt_cap or mac_cap to be set)*/
cmocka_unit_test(libspdm_test_responder_capabilities_case16),
/* Open test case */
/* psk_cap set and encrypt_cap and mac_cap cleared (psk_cap demands encrypt_cap or mac_cap to be set)*/
cmocka_unit_test(libspdm_test_responder_capabilities_case17),
/* encap_cap cleared and MUT_AUTH set (MUT_AUTH demands encap_cap to be set)*/
cmocka_unit_test(libspdm_test_responder_capabilities_case18),
Expand Down

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