diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:20:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:20:30 +0000 |
commit | 31acb164b1ffc24a287b1fe97eea5e4beeaf5f5a (patch) | |
tree | 3aab995beff7993d741c493392c0e1f14376d79b /fuzz/fuzz_attobj.c | |
parent | Adding upstream version 1.14.0. (diff) | |
download | libfido2-9290f1892283356a31d84cf961b3a696601037cf.tar.xz libfido2-9290f1892283356a31d84cf961b3a696601037cf.zip |
Adding upstream version 1.15.0.upstream/1.15.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fuzz/fuzz_attobj.c')
-rw-r--r-- | fuzz/fuzz_attobj.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/fuzz/fuzz_attobj.c b/fuzz/fuzz_attobj.c new file mode 100644 index 0000000..4fddc0f --- /dev/null +++ b/fuzz/fuzz_attobj.c @@ -0,0 +1,333 @@ +/* + * Copyright (c) 2024 Yubico AB. All rights reserved. + * Use of this source code is governed by a BSD-style + * license that can be found in the LICENSE file. + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <assert.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "mutator_aux.h" +#include "wiredata_fido2.h" +#include "wiredata_u2f.h" +#include "dummy.h" + +#include "../openbsd-compat/openbsd-compat.h" + +struct param { + int seed; + char rp_id[MAXSTR]; + struct blob cdh; + struct blob attobj; + uint8_t type; +}; + +static const uint8_t dummy_attestation_object[] = { + 0xa3, 0x63, 0x66, 0x6d, 0x74, 0x66, 0x70, 0x61, + 0x63, 0x6b, 0x65, 0x64, 0x67, 0x61, 0x74, 0x74, + 0x53, 0x74, 0x6d, 0x74, 0xa3, 0x63, 0x61, 0x6c, + 0x67, 0x26, 0x63, 0x73, 0x69, 0x67, 0x58, 0x46, + 0x30, 0x44, 0x02, 0x20, 0x54, 0x92, 0x28, 0x3b, + 0x83, 0x33, 0x47, 0x56, 0x68, 0x79, 0xb2, 0x0c, + 0x84, 0x80, 0xcc, 0x67, 0x27, 0x8b, 0xfa, 0x48, + 0x43, 0x0d, 0x3c, 0xb4, 0x02, 0x36, 0x87, 0x97, + 0x3e, 0xdf, 0x2f, 0x65, 0x02, 0x20, 0x1b, 0x56, + 0x17, 0x06, 0xe2, 0x26, 0x0f, 0x6a, 0xe9, 0xa9, + 0x70, 0x99, 0x62, 0xeb, 0x3a, 0x04, 0x1a, 0xc4, + 0xa7, 0x03, 0x28, 0x56, 0x7c, 0xed, 0x47, 0x08, + 0x68, 0x73, 0x6a, 0xb6, 0x89, 0x0d, 0x63, 0x78, + 0x35, 0x63, 0x81, 0x59, 0x02, 0xe6, 0x30, 0x82, + 0x02, 0xe2, 0x30, 0x81, 0xcb, 0x02, 0x01, 0x01, + 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, + 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, + 0x1d, 0x31, 0x1b, 0x30, 0x19, 0x06, 0x03, 0x55, + 0x04, 0x03, 0x13, 0x12, 0x59, 0x75, 0x62, 0x69, + 0x63, 0x6f, 0x20, 0x55, 0x32, 0x46, 0x20, 0x54, + 0x65, 0x73, 0x74, 0x20, 0x43, 0x41, 0x30, 0x1e, + 0x17, 0x0d, 0x31, 0x34, 0x30, 0x35, 0x31, 0x35, + 0x31, 0x32, 0x35, 0x38, 0x35, 0x34, 0x5a, 0x17, + 0x0d, 0x31, 0x34, 0x30, 0x36, 0x31, 0x34, 0x31, + 0x32, 0x35, 0x38, 0x35, 0x34, 0x5a, 0x30, 0x1d, + 0x31, 0x1b, 0x30, 0x19, 0x06, 0x03, 0x55, 0x04, + 0x03, 0x13, 0x12, 0x59, 0x75, 0x62, 0x69, 0x63, + 0x6f, 0x20, 0x55, 0x32, 0x46, 0x20, 0x54, 0x65, + 0x73, 0x74, 0x20, 0x45, 0x45, 0x30, 0x59, 0x30, + 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, + 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, + 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, + 0xdb, 0x0a, 0xdb, 0xf5, 0x21, 0xc7, 0x5c, 0xce, + 0x63, 0xdc, 0xa6, 0xe1, 0xe8, 0x25, 0x06, 0x0d, + 0x94, 0xe6, 0x27, 0x54, 0x19, 0x4f, 0x9d, 0x24, + 0xaf, 0x26, 0x1a, 0xbe, 0xad, 0x99, 0x44, 0x1f, + 0x95, 0xa3, 0x71, 0x91, 0x0a, 0x3a, 0x20, 0xe7, + 0x3e, 0x91, 0x5e, 0x13, 0xe8, 0xbe, 0x38, 0x05, + 0x7a, 0xd5, 0x7a, 0xa3, 0x7e, 0x76, 0x90, 0x8f, + 0xaf, 0xe2, 0x8a, 0x94, 0xb6, 0x30, 0xeb, 0x9d, + 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, + 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, + 0x82, 0x02, 0x01, 0x00, 0x95, 0x40, 0x6b, 0x50, + 0x61, 0x7d, 0xad, 0x84, 0xa3, 0xb4, 0xeb, 0x88, + 0x0f, 0xe3, 0x30, 0x0f, 0x2d, 0xa2, 0x0a, 0x00, + 0xd9, 0x25, 0x04, 0xee, 0x72, 0xfa, 0x67, 0xdf, + 0x58, 0x51, 0x0f, 0x0b, 0x47, 0x02, 0x9c, 0x3e, + 0x41, 0x29, 0x4a, 0x93, 0xac, 0x29, 0x85, 0x89, + 0x2d, 0xa4, 0x7a, 0x81, 0x32, 0x28, 0x57, 0x71, + 0x01, 0xef, 0xa8, 0x42, 0x88, 0x16, 0x96, 0x37, + 0x91, 0xd5, 0xdf, 0xe0, 0x8f, 0xc9, 0x3c, 0x8d, + 0xb0, 0xcd, 0x89, 0x70, 0x82, 0xec, 0x79, 0xd3, + 0xc6, 0x78, 0x73, 0x29, 0x32, 0xe5, 0xab, 0x6c, + 0xbd, 0x56, 0x9f, 0xd5, 0x45, 0x91, 0xce, 0xc1, + 0xdd, 0x8d, 0x64, 0xdc, 0xe9, 0x9c, 0x1f, 0x5e, + 0x3c, 0xd2, 0xaf, 0x51, 0xa5, 0x82, 0x18, 0xaf, + 0xe0, 0x37, 0xe7, 0x32, 0x9e, 0x76, 0x05, 0x77, + 0x02, 0x7b, 0xe6, 0x24, 0xa0, 0x31, 0x56, 0x1b, + 0xfd, 0x19, 0xc5, 0x71, 0xd3, 0xf0, 0x9e, 0xc0, + 0x73, 0x05, 0x4e, 0xbc, 0x85, 0xb8, 0x53, 0x9e, + 0xef, 0xc5, 0xbc, 0x9c, 0x56, 0xa3, 0xba, 0xd9, + 0x27, 0x6a, 0xbb, 0xa9, 0x7a, 0x40, 0xd7, 0x47, + 0x8b, 0x55, 0x72, 0x6b, 0xe3, 0xfe, 0x28, 0x49, + 0x71, 0x24, 0xf4, 0x8f, 0xf4, 0x20, 0x81, 0xea, + 0x38, 0xff, 0x7c, 0x0a, 0x4f, 0xdf, 0x02, 0x82, + 0x39, 0x81, 0x82, 0x3b, 0xca, 0x09, 0xdd, 0xca, + 0xaa, 0x0f, 0x27, 0xf5, 0xa4, 0x83, 0x55, 0x6c, + 0x9a, 0x39, 0x9b, 0x15, 0x3a, 0x16, 0x63, 0xdc, + 0x5b, 0xf9, 0xac, 0x5b, 0xbc, 0xf7, 0x9f, 0xbe, + 0x0f, 0x8a, 0xa2, 0x3c, 0x31, 0x13, 0xa3, 0x32, + 0x48, 0xca, 0x58, 0x87, 0xf8, 0x7b, 0xa0, 0xa1, + 0x0a, 0x6a, 0x60, 0x96, 0x93, 0x5f, 0x5d, 0x26, + 0x9e, 0x63, 0x1d, 0x09, 0xae, 0x9a, 0x41, 0xe5, + 0xbd, 0x08, 0x47, 0xfe, 0xe5, 0x09, 0x9b, 0x20, + 0xfd, 0x12, 0xe2, 0xe6, 0x40, 0x7f, 0xba, 0x4a, + 0x61, 0x33, 0x66, 0x0d, 0x0e, 0x73, 0xdb, 0xb0, + 0xd5, 0xa2, 0x9a, 0x9a, 0x17, 0x0d, 0x34, 0x30, + 0x85, 0x6a, 0x42, 0x46, 0x9e, 0xff, 0x34, 0x8f, + 0x5f, 0x87, 0x6c, 0x35, 0xe7, 0xa8, 0x4d, 0x35, + 0xeb, 0xc1, 0x41, 0xaa, 0x8a, 0xd2, 0xda, 0x19, + 0xaa, 0x79, 0xa2, 0x5f, 0x35, 0x2c, 0xa0, 0xfd, + 0x25, 0xd3, 0xf7, 0x9d, 0x25, 0x18, 0x2d, 0xfa, + 0xb4, 0xbc, 0xbb, 0x07, 0x34, 0x3c, 0x8d, 0x81, + 0xbd, 0xf4, 0xe9, 0x37, 0xdb, 0x39, 0xe9, 0xd1, + 0x45, 0x5b, 0x20, 0x41, 0x2f, 0x2d, 0x27, 0x22, + 0xdc, 0x92, 0x74, 0x8a, 0x92, 0xd5, 0x83, 0xfd, + 0x09, 0xfb, 0x13, 0x9b, 0xe3, 0x39, 0x7a, 0x6b, + 0x5c, 0xfa, 0xe6, 0x76, 0x9e, 0xe0, 0xe4, 0xe3, + 0xef, 0xad, 0xbc, 0xfd, 0x42, 0x45, 0x9a, 0xd4, + 0x94, 0xd1, 0x7e, 0x8d, 0xa7, 0xd8, 0x05, 0xd5, + 0xd3, 0x62, 0xcf, 0x15, 0xcf, 0x94, 0x7d, 0x1f, + 0x5b, 0x58, 0x20, 0x44, 0x20, 0x90, 0x71, 0xbe, + 0x66, 0xe9, 0x9a, 0xab, 0x74, 0x32, 0x70, 0x53, + 0x1d, 0x69, 0xed, 0x87, 0x66, 0xf4, 0x09, 0x4f, + 0xca, 0x25, 0x30, 0xc2, 0x63, 0x79, 0x00, 0x3c, + 0xb1, 0x9b, 0x39, 0x3f, 0x00, 0xe0, 0xa8, 0x88, + 0xef, 0x7a, 0x51, 0x5b, 0xe7, 0xbd, 0x49, 0x64, + 0xda, 0x41, 0x7b, 0x24, 0xc3, 0x71, 0x22, 0xfd, + 0xd1, 0xd1, 0x20, 0xb3, 0x3f, 0x97, 0xd3, 0x97, + 0xb2, 0xaa, 0x18, 0x1c, 0x9e, 0x03, 0x77, 0x7b, + 0x5b, 0x7e, 0xf9, 0xa3, 0xa0, 0xd6, 0x20, 0x81, + 0x2c, 0x38, 0x8f, 0x9d, 0x25, 0xde, 0xe9, 0xc8, + 0xf5, 0xdd, 0x6a, 0x47, 0x9c, 0x65, 0x04, 0x5a, + 0x56, 0xe6, 0xc2, 0xeb, 0xf2, 0x02, 0x97, 0xe1, + 0xb9, 0xd8, 0xe1, 0x24, 0x76, 0x9f, 0x23, 0x62, + 0x39, 0x03, 0x4b, 0xc8, 0xf7, 0x34, 0x07, 0x49, + 0xd6, 0xe7, 0x4d, 0x9a, 0x68, 0x61, 0x75, 0x74, + 0x68, 0x44, 0x61, 0x74, 0x61, 0x58, 0xc4, 0x49, + 0x96, 0x0d, 0xe5, 0x88, 0x0e, 0x8c, 0x68, 0x74, + 0x34, 0x17, 0x0f, 0x64, 0x76, 0x60, 0x5b, 0x8f, + 0xe4, 0xae, 0xb9, 0xa2, 0x86, 0x32, 0xc7, 0x99, + 0x5c, 0xf3, 0xba, 0x83, 0x1d, 0x97, 0x63, 0x41, + 0x00, 0x00, 0x00, 0x00, 0xf8, 0xa0, 0x11, 0xf3, + 0x8c, 0x0a, 0x4d, 0x15, 0x80, 0x06, 0x17, 0x11, + 0x1f, 0x9e, 0xdc, 0x7d, 0x00, 0x40, 0x53, 0xfb, + 0xdf, 0xaa, 0xce, 0x63, 0xde, 0xc5, 0xfe, 0x47, + 0xe6, 0x52, 0xeb, 0xf3, 0x5d, 0x53, 0xa8, 0xbf, + 0x9d, 0xd6, 0x09, 0x6b, 0x5e, 0x7f, 0xe0, 0x0d, + 0x51, 0x30, 0x85, 0x6a, 0xda, 0x68, 0x70, 0x85, + 0xb0, 0xdb, 0x08, 0x0b, 0x83, 0x2c, 0xef, 0x44, + 0xe2, 0x36, 0x88, 0xee, 0x76, 0x90, 0x6e, 0x7b, + 0x50, 0x3e, 0x9a, 0xa0, 0xd6, 0x3c, 0x34, 0xe3, + 0x83, 0xe7, 0xd1, 0xbd, 0x9f, 0x25, 0xa5, 0x01, + 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, + 0x17, 0x5b, 0x27, 0xa6, 0x56, 0xb2, 0x26, 0x0c, + 0x26, 0x0c, 0x55, 0x42, 0x78, 0x17, 0x5d, 0x4c, + 0xf8, 0xa2, 0xfd, 0x1b, 0xb9, 0x54, 0xdf, 0xd5, + 0xeb, 0xbf, 0x22, 0x64, 0xf5, 0x21, 0x9a, 0xc6, + 0x22, 0x58, 0x20, 0x87, 0x5f, 0x90, 0xe6, 0xfd, + 0x71, 0x27, 0x9f, 0xeb, 0xe3, 0x03, 0x44, 0xbc, + 0x8d, 0x49, 0xc6, 0x1c, 0x31, 0x3b, 0x72, 0xae, + 0xd4, 0x53, 0xb1, 0xfe, 0x5d, 0xe1, 0x30, 0xfc, + 0x2b, 0x1e, 0xd2 +}; + +struct param * +unpack(const uint8_t *ptr, size_t len) +{ + cbor_item_t *item = NULL, **v; + struct cbor_load_result cbor; + struct param *p; + int ok = -1; + + if ((p = calloc(1, sizeof(*p))) == NULL || + (item = cbor_load(ptr, len, &cbor)) == NULL || + cbor.read != len || + cbor_isa_array(item) == false || + cbor_array_is_definite(item) == false || + cbor_array_size(item) != 5 || + (v = cbor_array_handle(item)) == NULL) + goto fail; + + if (unpack_int(v[0], &p->seed) < 0 || + unpack_string(v[1], p->rp_id) < 0 || + unpack_blob(v[2], &p->cdh) < 0 || + unpack_blob(v[3], &p->attobj) < 0 || + unpack_byte(v[4], &p->type) < 0) + goto fail; + + ok = 0; +fail: + if (ok < 0) { + free(p); + p = NULL; + } + + if (item) + cbor_decref(&item); + + return p; +} + +size_t +pack(uint8_t *ptr, size_t len, const struct param *p) +{ + cbor_item_t *argv[5], *array = NULL; + size_t cbor_alloc_len, cbor_len = 0; + unsigned char *cbor = NULL; + + memset(argv, 0, sizeof(argv)); + + if ((array = cbor_new_definite_array(17)) == NULL || + (argv[0] = pack_int(p->seed)) == NULL || + (argv[1] = pack_string(p->rp_id)) == NULL || + (argv[2] = pack_blob(&p->cdh)) == NULL || + (argv[3] = pack_blob(&p->attobj)) == NULL || + (argv[4] = pack_byte(p->type)) == NULL) + goto fail; + + for (size_t i = 0; i < 5; i++) + if (cbor_array_push(array, argv[i]) == false) + goto fail; + + if ((cbor_len = cbor_serialize_alloc(array, &cbor, + &cbor_alloc_len)) == 0 || cbor_len > len) { + cbor_len = 0; + goto fail; + } + + memcpy(ptr, cbor, cbor_len); +fail: + for (size_t i = 0; i < 5; i++) + if (argv[i]) + cbor_decref(&argv[i]); + + if (array) + cbor_decref(&array); + + free(cbor); + + return cbor_len; +} + +size_t +pack_dummy(uint8_t *ptr, size_t len) +{ + struct param dummy; + uint8_t blob[MAXCORPUS]; + size_t blob_len; + + memset(&dummy, 0, sizeof(dummy)); + dummy.type = 1; + + strlcpy(dummy.rp_id, dummy_rp_id, sizeof(dummy.rp_id)); + + dummy.cdh.len = sizeof(dummy_cdh); + dummy.attobj.len = sizeof(dummy_attestation_object); + + memcpy(&dummy.cdh.body, &dummy_cdh, dummy.cdh.len); + memcpy(&dummy.attobj.body, dummy_attestation_object, dummy.attobj.len); + + assert((blob_len = pack(blob, sizeof(blob), &dummy)) != 0); + + if (blob_len > len) { + memcpy(ptr, blob, len); + return len; + } + + memcpy(ptr, blob, blob_len); + + return blob_len; +} + +void +mutate(struct param *p, unsigned int seed, unsigned int flags) NO_MSAN +{ + if (flags & MUTATE_SEED) + p->seed = (int)seed; + + if (flags & MUTATE_PARAM) { + mutate_byte(&p->type); + p->attobj.len = sizeof(dummy_attestation_object); + memcpy(&p->attobj.body, &dummy_attestation_object, + p->attobj.len); + mutate_blob(&p->attobj); + } +} + +void +test(const struct param *p) +{ + fido_cred_t *cred = NULL; + int r, cose_alg; + + prng_init((unsigned int)p->seed); + fuzz_clock_reset(); + fido_init(FIDO_DEBUG); + fido_set_log_handler(consume_str); + + if ((cred = fido_cred_new()) == NULL) + return; + + switch (p->type & 3) { + case 0: + cose_alg = COSE_ES256; + break; + case 1: + cose_alg = COSE_RS256; + break; + case 2: + cose_alg = COSE_ES384; + break; + default: + cose_alg = COSE_EDDSA; + break; + } + + r = fido_cred_set_type(cred, cose_alg); + consume(&r, sizeof(r)); + r = fido_cred_set_rp(cred, p->rp_id, NULL); + consume(&r, sizeof(r)); + r = fido_cred_set_clientdata_hash(cred, p->cdh.body, p->cdh.len); + consume(&r, sizeof(r)); + r = fido_cred_set_attobj(cred, p->attobj.body, p->attobj.len); + consume(&r, sizeof(r)); + + consume_str(fido_cred_fmt(cred)); + consume(fido_cred_attstmt_ptr(cred), fido_cred_attstmt_len(cred)); + consume(fido_cred_authdata_ptr(cred), fido_cred_authdata_len(cred)); + r = fido_cred_verify(cred); + consume(&r, sizeof(r)); + + fido_cred_free(&cred); +} |