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openssl/fuzz/asn1.c

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/*
* Copyright 2016-2024 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 <data structure>
*/
/* We need to use some deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED
#include <stdio.h>
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/dh.h>
#include <openssl/dsa.h>
#include <openssl/ec.h>
#include <openssl/ocsp.h>
#include <openssl/pkcs12.h>
#include <openssl/rsa.h>
#include <openssl/ts.h>
#include <openssl/x509v3.h>
#include <openssl/cms.h>
#include <openssl/ess.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/ssl.h>
#include "internal/nelem.h"
#include "fuzzer.h"
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),
#if !defined(OPENSSL_NO_EC) && !defined(OPENSSL_NO_DEPRECATED_3_0)
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()); \
\
if (bio != 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()); \
\
if (bio != 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()); \
\
if (bio != 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)
{
FuzzerSetRand();
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);
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) {
/*
* Don't print excessively long output to prevent spurious fuzzer
* timeouts.
*/
if (b - buf < 10000) {
BIO *bio = BIO_new(BIO_s_null());
if (bio != NULL) {
ASN1_item_print(bio, o, 4, i, pctx);
BIO_free(bio);
}
}
if (ASN1_item_i2d(o, &der, i) > 0) {
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);
# ifndef OPENSSL_NO_DEPRECATED_3_0
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
#endif
#ifndef OPENSSL_NO_DEPRECATED_3_0
DO_TEST_NO_PRINT(RSA, d2i_RSAPublicKey, i2d_RSAPublicKey);
#endif
#ifndef OPENSSL_NO_EC
# ifndef OPENSSL_NO_DEPRECATED_3_0
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);
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);
FuzzerClearRand();
}
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