/* * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * https://www.openssl.org/source/license.html * or in the file LICENSE in the source distribution. */ /* * Fuzz ASN.1 parsing for various data structures. Specify which on the * command line: * * asn1 */ /* We need to use some deprecated APIs */ #define OPENSSL_SUPPRESS_DEPRECATED #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fuzzer.h" #include "rand.inc" static ASN1_ITEM_EXP *item_type[] = { ASN1_ITEM_ref(ACCESS_DESCRIPTION), #ifndef OPENSSL_NO_RFC3779 ASN1_ITEM_ref(ASIdentifierChoice), ASN1_ITEM_ref(ASIdentifiers), ASN1_ITEM_ref(ASIdOrRange), #endif ASN1_ITEM_ref(ASN1_ANY), ASN1_ITEM_ref(ASN1_BIT_STRING), ASN1_ITEM_ref(ASN1_BMPSTRING), ASN1_ITEM_ref(ASN1_BOOLEAN), ASN1_ITEM_ref(ASN1_ENUMERATED), ASN1_ITEM_ref(ASN1_FBOOLEAN), ASN1_ITEM_ref(ASN1_GENERALIZEDTIME), ASN1_ITEM_ref(ASN1_GENERALSTRING), ASN1_ITEM_ref(ASN1_IA5STRING), ASN1_ITEM_ref(ASN1_INTEGER), ASN1_ITEM_ref(ASN1_NULL), ASN1_ITEM_ref(ASN1_OBJECT), ASN1_ITEM_ref(ASN1_OCTET_STRING), ASN1_ITEM_ref(ASN1_OCTET_STRING_NDEF), ASN1_ITEM_ref(ASN1_PRINTABLE), ASN1_ITEM_ref(ASN1_PRINTABLESTRING), ASN1_ITEM_ref(ASN1_SEQUENCE), ASN1_ITEM_ref(ASN1_SEQUENCE_ANY), ASN1_ITEM_ref(ASN1_SET_ANY), ASN1_ITEM_ref(ASN1_T61STRING), ASN1_ITEM_ref(ASN1_TBOOLEAN), ASN1_ITEM_ref(ASN1_TIME), ASN1_ITEM_ref(ASN1_UNIVERSALSTRING), ASN1_ITEM_ref(ASN1_UTCTIME), ASN1_ITEM_ref(ASN1_UTF8STRING), ASN1_ITEM_ref(ASN1_VISIBLESTRING), #ifndef OPENSSL_NO_RFC3779 ASN1_ITEM_ref(ASRange), #endif ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS), ASN1_ITEM_ref(AUTHORITY_KEYID), ASN1_ITEM_ref(BASIC_CONSTRAINTS), ASN1_ITEM_ref(BIGNUM), ASN1_ITEM_ref(CBIGNUM), ASN1_ITEM_ref(CERTIFICATEPOLICIES), #ifndef OPENSSL_NO_CMS ASN1_ITEM_ref(CMS_ContentInfo), ASN1_ITEM_ref(CMS_ReceiptRequest), ASN1_ITEM_ref(CRL_DIST_POINTS), #endif #ifndef OPENSSL_NO_DH ASN1_ITEM_ref(DHparams), #endif ASN1_ITEM_ref(DIRECTORYSTRING), ASN1_ITEM_ref(DISPLAYTEXT), ASN1_ITEM_ref(DIST_POINT), ASN1_ITEM_ref(DIST_POINT_NAME), #ifndef OPENSSL_NO_EC ASN1_ITEM_ref(ECPARAMETERS), ASN1_ITEM_ref(ECPKPARAMETERS), #endif ASN1_ITEM_ref(EDIPARTYNAME), ASN1_ITEM_ref(EXTENDED_KEY_USAGE), ASN1_ITEM_ref(GENERAL_NAME), ASN1_ITEM_ref(GENERAL_NAMES), ASN1_ITEM_ref(GENERAL_SUBTREE), #ifndef OPENSSL_NO_RFC3779 ASN1_ITEM_ref(IPAddressChoice), ASN1_ITEM_ref(IPAddressFamily), ASN1_ITEM_ref(IPAddressOrRange), ASN1_ITEM_ref(IPAddressRange), #endif ASN1_ITEM_ref(ISSUING_DIST_POINT), #ifndef OPENSSL_NO_DEPRECATED_3_0 ASN1_ITEM_ref(LONG), #endif ASN1_ITEM_ref(NAME_CONSTRAINTS), ASN1_ITEM_ref(NETSCAPE_CERT_SEQUENCE), ASN1_ITEM_ref(NETSCAPE_SPKAC), ASN1_ITEM_ref(NETSCAPE_SPKI), ASN1_ITEM_ref(NOTICEREF), #ifndef OPENSSL_NO_OCSP ASN1_ITEM_ref(OCSP_BASICRESP), ASN1_ITEM_ref(OCSP_CERTID), ASN1_ITEM_ref(OCSP_CERTSTATUS), ASN1_ITEM_ref(OCSP_CRLID), ASN1_ITEM_ref(OCSP_ONEREQ), ASN1_ITEM_ref(OCSP_REQINFO), ASN1_ITEM_ref(OCSP_REQUEST), ASN1_ITEM_ref(OCSP_RESPBYTES), ASN1_ITEM_ref(OCSP_RESPDATA), ASN1_ITEM_ref(OCSP_RESPID), ASN1_ITEM_ref(OCSP_RESPONSE), ASN1_ITEM_ref(OCSP_REVOKEDINFO), ASN1_ITEM_ref(OCSP_SERVICELOC), ASN1_ITEM_ref(OCSP_SIGNATURE), ASN1_ITEM_ref(OCSP_SINGLERESP), #endif ASN1_ITEM_ref(OTHERNAME), ASN1_ITEM_ref(PBE2PARAM), ASN1_ITEM_ref(PBEPARAM), ASN1_ITEM_ref(PBKDF2PARAM), ASN1_ITEM_ref(PKCS12), ASN1_ITEM_ref(PKCS12_AUTHSAFES), ASN1_ITEM_ref(PKCS12_BAGS), ASN1_ITEM_ref(PKCS12_MAC_DATA), ASN1_ITEM_ref(PKCS12_SAFEBAG), ASN1_ITEM_ref(PKCS12_SAFEBAGS), ASN1_ITEM_ref(PKCS7), ASN1_ITEM_ref(PKCS7_ATTR_SIGN), ASN1_ITEM_ref(PKCS7_ATTR_VERIFY), ASN1_ITEM_ref(PKCS7_DIGEST), ASN1_ITEM_ref(PKCS7_ENC_CONTENT), ASN1_ITEM_ref(PKCS7_ENCRYPT), ASN1_ITEM_ref(PKCS7_ENVELOPE), ASN1_ITEM_ref(PKCS7_ISSUER_AND_SERIAL), ASN1_ITEM_ref(PKCS7_RECIP_INFO), ASN1_ITEM_ref(PKCS7_SIGNED), ASN1_ITEM_ref(PKCS7_SIGN_ENVELOPE), ASN1_ITEM_ref(PKCS7_SIGNER_INFO), ASN1_ITEM_ref(PKCS8_PRIV_KEY_INFO), ASN1_ITEM_ref(PKEY_USAGE_PERIOD), ASN1_ITEM_ref(POLICY_CONSTRAINTS), ASN1_ITEM_ref(POLICYINFO), ASN1_ITEM_ref(POLICY_MAPPING), ASN1_ITEM_ref(POLICY_MAPPINGS), ASN1_ITEM_ref(POLICYQUALINFO), ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION), ASN1_ITEM_ref(PROXY_POLICY), ASN1_ITEM_ref(RSA_OAEP_PARAMS), ASN1_ITEM_ref(RSA_PSS_PARAMS), #ifndef OPENSSL_NO_DEPRECATED_3_0 ASN1_ITEM_ref(RSAPrivateKey), ASN1_ITEM_ref(RSAPublicKey), #endif ASN1_ITEM_ref(SXNET), ASN1_ITEM_ref(SXNETID), ASN1_ITEM_ref(USERNOTICE), ASN1_ITEM_ref(X509), ASN1_ITEM_ref(X509_ALGOR), ASN1_ITEM_ref(X509_ALGORS), ASN1_ITEM_ref(X509_ATTRIBUTE), ASN1_ITEM_ref(X509_CERT_AUX), ASN1_ITEM_ref(X509_CINF), ASN1_ITEM_ref(X509_CRL), ASN1_ITEM_ref(X509_CRL_INFO), ASN1_ITEM_ref(X509_EXTENSION), ASN1_ITEM_ref(X509_EXTENSIONS), ASN1_ITEM_ref(X509_NAME), ASN1_ITEM_ref(X509_NAME_ENTRY), ASN1_ITEM_ref(X509_PUBKEY), ASN1_ITEM_ref(X509_REQ), ASN1_ITEM_ref(X509_REQ_INFO), ASN1_ITEM_ref(X509_REVOKED), ASN1_ITEM_ref(X509_SIG), ASN1_ITEM_ref(X509_VAL), #ifndef OPENSSL_NO_DEPRECATED_3_0 ASN1_ITEM_ref(ZLONG), #endif ASN1_ITEM_ref(INT32), ASN1_ITEM_ref(ZINT32), ASN1_ITEM_ref(UINT32), ASN1_ITEM_ref(ZUINT32), ASN1_ITEM_ref(INT64), ASN1_ITEM_ref(ZINT64), ASN1_ITEM_ref(UINT64), ASN1_ITEM_ref(ZUINT64), NULL }; static ASN1_PCTX *pctx; #define DO_TEST(TYPE, D2I, I2D, PRINT) { \ const unsigned char *p = buf; \ unsigned char *der = NULL; \ TYPE *type = D2I(NULL, &p, len); \ \ if (type != NULL) { \ int len2; \ BIO *bio = BIO_new(BIO_s_null()); \ \ PRINT(bio, type); \ BIO_free(bio); \ len2 = I2D(type, &der); \ if (len2 != 0) {} \ OPENSSL_free(der); \ TYPE ## _free(type); \ } \ } #define DO_TEST_PRINT_OFFSET(TYPE, D2I, I2D, PRINT) { \ const unsigned char *p = buf; \ unsigned char *der = NULL; \ TYPE *type = D2I(NULL, &p, len); \ \ if (type != NULL) { \ BIO *bio = BIO_new(BIO_s_null()); \ \ PRINT(bio, type, 0); \ BIO_free(bio); \ I2D(type, &der); \ OPENSSL_free(der); \ TYPE ## _free(type); \ } \ } #define DO_TEST_PRINT_PCTX(TYPE, D2I, I2D, PRINT) { \ const unsigned char *p = buf; \ unsigned char *der = NULL; \ TYPE *type = D2I(NULL, &p, len); \ \ if (type != NULL) { \ BIO *bio = BIO_new(BIO_s_null()); \ \ PRINT(bio, type, 0, pctx); \ BIO_free(bio); \ I2D(type, &der); \ OPENSSL_free(der); \ TYPE ## _free(type); \ } \ } #define DO_TEST_NO_PRINT(TYPE, D2I, I2D) { \ const unsigned char *p = buf; \ unsigned char *der = NULL; \ TYPE *type = D2I(NULL, &p, len); \ \ if (type != NULL) { \ BIO *bio = BIO_new(BIO_s_null()); \ \ BIO_free(bio); \ I2D(type, &der); \ OPENSSL_free(der); \ TYPE ## _free(type); \ } \ } int FuzzerInitialize(int *argc, char ***argv) { pctx = ASN1_PCTX_new(); ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT | ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF | ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME); ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT | ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL); OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL); OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL); ERR_clear_error(); CRYPTO_free_ex_index(0, -1); FuzzerSetRand(); return 1; } int FuzzerTestOneInput(const uint8_t *buf, size_t len) { int n; for (n = 0; item_type[n] != NULL; ++n) { const uint8_t *b = buf; unsigned char *der = NULL; const ASN1_ITEM *i = ASN1_ITEM_ptr(item_type[n]); ASN1_VALUE *o = ASN1_item_d2i(NULL, &b, len, i); if (o != NULL) { BIO *bio = BIO_new(BIO_s_null()); ASN1_item_print(bio, o, 4, i, pctx); BIO_free(bio); ASN1_item_i2d(o, &der, i); OPENSSL_free(der); ASN1_item_free(o, i); } } #ifndef OPENSSL_NO_TS DO_TEST(TS_REQ, d2i_TS_REQ, i2d_TS_REQ, TS_REQ_print_bio); DO_TEST(TS_MSG_IMPRINT, d2i_TS_MSG_IMPRINT, i2d_TS_MSG_IMPRINT, TS_MSG_IMPRINT_print_bio); DO_TEST(TS_RESP, d2i_TS_RESP, i2d_TS_RESP, TS_RESP_print_bio); DO_TEST(TS_STATUS_INFO, d2i_TS_STATUS_INFO, i2d_TS_STATUS_INFO, TS_STATUS_INFO_print_bio); DO_TEST(TS_TST_INFO, d2i_TS_TST_INFO, i2d_TS_TST_INFO, TS_TST_INFO_print_bio); DO_TEST_NO_PRINT(TS_ACCURACY, d2i_TS_ACCURACY, i2d_TS_ACCURACY); #endif DO_TEST_NO_PRINT(ESS_ISSUER_SERIAL, d2i_ESS_ISSUER_SERIAL, i2d_ESS_ISSUER_SERIAL); DO_TEST_NO_PRINT(ESS_CERT_ID, d2i_ESS_CERT_ID, i2d_ESS_CERT_ID); DO_TEST_NO_PRINT(ESS_SIGNING_CERT, d2i_ESS_SIGNING_CERT, i2d_ESS_SIGNING_CERT); DO_TEST_NO_PRINT(ESS_CERT_ID_V2, d2i_ESS_CERT_ID_V2, i2d_ESS_CERT_ID_V2); DO_TEST_NO_PRINT(ESS_SIGNING_CERT_V2, d2i_ESS_SIGNING_CERT_V2, i2d_ESS_SIGNING_CERT_V2); #if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0) DO_TEST_NO_PRINT(DH, d2i_DHparams, i2d_DHparams); DO_TEST_NO_PRINT(DH, d2i_DHxparams, i2d_DHxparams); #endif #ifndef OPENSSL_NO_DSA DO_TEST_NO_PRINT(DSA_SIG, d2i_DSA_SIG, i2d_DSA_SIG); DO_TEST_NO_PRINT(DSA, d2i_DSAPrivateKey, i2d_DSAPrivateKey); DO_TEST_NO_PRINT(DSA, d2i_DSAPublicKey, i2d_DSAPublicKey); DO_TEST_NO_PRINT(DSA, d2i_DSAparams, i2d_DSAparams); #endif #ifndef OPENSSL_NO_DEPRECATED_3_0 DO_TEST_NO_PRINT(RSA, d2i_RSAPublicKey, i2d_RSAPublicKey); #endif #ifndef OPENSSL_NO_EC DO_TEST_PRINT_OFFSET(EC_GROUP, d2i_ECPKParameters, i2d_ECPKParameters, ECPKParameters_print); DO_TEST_PRINT_OFFSET(EC_KEY, d2i_ECPrivateKey, i2d_ECPrivateKey, EC_KEY_print); DO_TEST(EC_KEY, d2i_ECParameters, i2d_ECParameters, ECParameters_print); # ifndef OPENSSL_NO_DEPRECATED_3_0 DO_TEST_NO_PRINT(ECDSA_SIG, d2i_ECDSA_SIG, i2d_ECDSA_SIG); # endif #endif DO_TEST_PRINT_PCTX(EVP_PKEY, d2i_AutoPrivateKey, i2d_PrivateKey, EVP_PKEY_print_private); DO_TEST(SSL_SESSION, d2i_SSL_SESSION, i2d_SSL_SESSION, SSL_SESSION_print); ERR_clear_error(); return 0; } void FuzzerCleanup(void) { ASN1_PCTX_free(pctx); }