2 * Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.openssl.org/source/license.html
8 * or in the file LICENSE in the source distribution.
12 * Fuzz ASN.1 parsing for various data structures. Specify which on the
15 * asn1 <data structure>
18 /* We need to use some deprecated APIs */
19 #define OPENSSL_SUPPRESS_DEPRECATED
23 #include <openssl/asn1.h>
24 #include <openssl/asn1t.h>
25 #include <openssl/dh.h>
26 #include <openssl/dsa.h>
27 #include <openssl/ec.h>
28 #include <openssl/ocsp.h>
29 #include <openssl/pkcs12.h>
30 #include <openssl/rsa.h>
31 #include <openssl/ts.h>
32 #include <openssl/x509v3.h>
33 #include <openssl/cms.h>
34 #include <openssl/ess.h>
35 #include <openssl/err.h>
36 #include <openssl/rand.h>
37 #include <openssl/bio.h>
38 #include <openssl/evp.h>
39 #include <openssl/ssl.h>
40 #include "internal/nelem.h"
43 static ASN1_ITEM_EXP
*item_type
[] = {
44 ASN1_ITEM_ref(ACCESS_DESCRIPTION
),
45 #ifndef OPENSSL_NO_RFC3779
46 ASN1_ITEM_ref(ASIdentifierChoice
),
47 ASN1_ITEM_ref(ASIdentifiers
),
48 ASN1_ITEM_ref(ASIdOrRange
),
50 ASN1_ITEM_ref(ASN1_ANY
),
51 ASN1_ITEM_ref(ASN1_BIT_STRING
),
52 ASN1_ITEM_ref(ASN1_BMPSTRING
),
53 ASN1_ITEM_ref(ASN1_BOOLEAN
),
54 ASN1_ITEM_ref(ASN1_ENUMERATED
),
55 ASN1_ITEM_ref(ASN1_FBOOLEAN
),
56 ASN1_ITEM_ref(ASN1_GENERALIZEDTIME
),
57 ASN1_ITEM_ref(ASN1_GENERALSTRING
),
58 ASN1_ITEM_ref(ASN1_IA5STRING
),
59 ASN1_ITEM_ref(ASN1_INTEGER
),
60 ASN1_ITEM_ref(ASN1_NULL
),
61 ASN1_ITEM_ref(ASN1_OBJECT
),
62 ASN1_ITEM_ref(ASN1_OCTET_STRING
),
63 ASN1_ITEM_ref(ASN1_OCTET_STRING_NDEF
),
64 ASN1_ITEM_ref(ASN1_PRINTABLE
),
65 ASN1_ITEM_ref(ASN1_PRINTABLESTRING
),
66 ASN1_ITEM_ref(ASN1_SEQUENCE
),
67 ASN1_ITEM_ref(ASN1_SEQUENCE_ANY
),
68 ASN1_ITEM_ref(ASN1_SET_ANY
),
69 ASN1_ITEM_ref(ASN1_T61STRING
),
70 ASN1_ITEM_ref(ASN1_TBOOLEAN
),
71 ASN1_ITEM_ref(ASN1_TIME
),
72 ASN1_ITEM_ref(ASN1_UNIVERSALSTRING
),
73 ASN1_ITEM_ref(ASN1_UTCTIME
),
74 ASN1_ITEM_ref(ASN1_UTF8STRING
),
75 ASN1_ITEM_ref(ASN1_VISIBLESTRING
),
76 #ifndef OPENSSL_NO_RFC3779
77 ASN1_ITEM_ref(ASRange
),
79 ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS
),
80 ASN1_ITEM_ref(AUTHORITY_KEYID
),
81 ASN1_ITEM_ref(BASIC_CONSTRAINTS
),
82 ASN1_ITEM_ref(BIGNUM
),
83 ASN1_ITEM_ref(CBIGNUM
),
84 ASN1_ITEM_ref(CERTIFICATEPOLICIES
),
85 #ifndef OPENSSL_NO_CMS
86 ASN1_ITEM_ref(CMS_ContentInfo
),
87 ASN1_ITEM_ref(CMS_ReceiptRequest
),
88 ASN1_ITEM_ref(CRL_DIST_POINTS
),
91 ASN1_ITEM_ref(DHparams
),
93 ASN1_ITEM_ref(DIRECTORYSTRING
),
94 ASN1_ITEM_ref(DISPLAYTEXT
),
95 ASN1_ITEM_ref(DIST_POINT
),
96 ASN1_ITEM_ref(DIST_POINT_NAME
),
97 #if !defined(OPENSSL_NO_EC) && !defined(OPENSSL_NO_DEPRECATED_3_0)
98 ASN1_ITEM_ref(ECPARAMETERS
),
99 ASN1_ITEM_ref(ECPKPARAMETERS
),
101 ASN1_ITEM_ref(EDIPARTYNAME
),
102 ASN1_ITEM_ref(EXTENDED_KEY_USAGE
),
103 ASN1_ITEM_ref(GENERAL_NAME
),
104 ASN1_ITEM_ref(GENERAL_NAMES
),
105 ASN1_ITEM_ref(GENERAL_SUBTREE
),
106 #ifndef OPENSSL_NO_RFC3779
107 ASN1_ITEM_ref(IPAddressChoice
),
108 ASN1_ITEM_ref(IPAddressFamily
),
109 ASN1_ITEM_ref(IPAddressOrRange
),
110 ASN1_ITEM_ref(IPAddressRange
),
112 ASN1_ITEM_ref(ISSUING_DIST_POINT
),
113 #ifndef OPENSSL_NO_DEPRECATED_3_0
116 ASN1_ITEM_ref(NAME_CONSTRAINTS
),
117 ASN1_ITEM_ref(NETSCAPE_CERT_SEQUENCE
),
118 ASN1_ITEM_ref(NETSCAPE_SPKAC
),
119 ASN1_ITEM_ref(NETSCAPE_SPKI
),
120 ASN1_ITEM_ref(NOTICEREF
),
121 #ifndef OPENSSL_NO_OCSP
122 ASN1_ITEM_ref(OCSP_BASICRESP
),
123 ASN1_ITEM_ref(OCSP_CERTID
),
124 ASN1_ITEM_ref(OCSP_CERTSTATUS
),
125 ASN1_ITEM_ref(OCSP_CRLID
),
126 ASN1_ITEM_ref(OCSP_ONEREQ
),
127 ASN1_ITEM_ref(OCSP_REQINFO
),
128 ASN1_ITEM_ref(OCSP_REQUEST
),
129 ASN1_ITEM_ref(OCSP_RESPBYTES
),
130 ASN1_ITEM_ref(OCSP_RESPDATA
),
131 ASN1_ITEM_ref(OCSP_RESPID
),
132 ASN1_ITEM_ref(OCSP_RESPONSE
),
133 ASN1_ITEM_ref(OCSP_REVOKEDINFO
),
134 ASN1_ITEM_ref(OCSP_SERVICELOC
),
135 ASN1_ITEM_ref(OCSP_SIGNATURE
),
136 ASN1_ITEM_ref(OCSP_SINGLERESP
),
138 ASN1_ITEM_ref(OTHERNAME
),
139 ASN1_ITEM_ref(PBE2PARAM
),
140 ASN1_ITEM_ref(PBEPARAM
),
141 ASN1_ITEM_ref(PBKDF2PARAM
),
142 ASN1_ITEM_ref(PKCS12
),
143 ASN1_ITEM_ref(PKCS12_AUTHSAFES
),
144 ASN1_ITEM_ref(PKCS12_BAGS
),
145 ASN1_ITEM_ref(PKCS12_MAC_DATA
),
146 ASN1_ITEM_ref(PKCS12_SAFEBAG
),
147 ASN1_ITEM_ref(PKCS12_SAFEBAGS
),
148 ASN1_ITEM_ref(PKCS7
),
149 ASN1_ITEM_ref(PKCS7_ATTR_SIGN
),
150 ASN1_ITEM_ref(PKCS7_ATTR_VERIFY
),
151 ASN1_ITEM_ref(PKCS7_DIGEST
),
152 ASN1_ITEM_ref(PKCS7_ENC_CONTENT
),
153 ASN1_ITEM_ref(PKCS7_ENCRYPT
),
154 ASN1_ITEM_ref(PKCS7_ENVELOPE
),
155 ASN1_ITEM_ref(PKCS7_ISSUER_AND_SERIAL
),
156 ASN1_ITEM_ref(PKCS7_RECIP_INFO
),
157 ASN1_ITEM_ref(PKCS7_SIGNED
),
158 ASN1_ITEM_ref(PKCS7_SIGN_ENVELOPE
),
159 ASN1_ITEM_ref(PKCS7_SIGNER_INFO
),
160 ASN1_ITEM_ref(PKCS8_PRIV_KEY_INFO
),
161 ASN1_ITEM_ref(PKEY_USAGE_PERIOD
),
162 ASN1_ITEM_ref(POLICY_CONSTRAINTS
),
163 ASN1_ITEM_ref(POLICYINFO
),
164 ASN1_ITEM_ref(POLICY_MAPPING
),
165 ASN1_ITEM_ref(POLICY_MAPPINGS
),
166 ASN1_ITEM_ref(POLICYQUALINFO
),
167 ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION
),
168 ASN1_ITEM_ref(PROXY_POLICY
),
169 ASN1_ITEM_ref(RSA_OAEP_PARAMS
),
170 ASN1_ITEM_ref(RSA_PSS_PARAMS
),
171 #ifndef OPENSSL_NO_DEPRECATED_3_0
172 ASN1_ITEM_ref(RSAPrivateKey
),
173 ASN1_ITEM_ref(RSAPublicKey
),
175 ASN1_ITEM_ref(SXNET
),
176 ASN1_ITEM_ref(SXNETID
),
177 ASN1_ITEM_ref(USERNOTICE
),
179 ASN1_ITEM_ref(X509_ALGOR
),
180 ASN1_ITEM_ref(X509_ALGORS
),
181 ASN1_ITEM_ref(X509_ATTRIBUTE
),
182 ASN1_ITEM_ref(X509_CERT_AUX
),
183 ASN1_ITEM_ref(X509_CINF
),
184 ASN1_ITEM_ref(X509_CRL
),
185 ASN1_ITEM_ref(X509_CRL_INFO
),
186 ASN1_ITEM_ref(X509_EXTENSION
),
187 ASN1_ITEM_ref(X509_EXTENSIONS
),
188 ASN1_ITEM_ref(X509_NAME
),
189 ASN1_ITEM_ref(X509_NAME_ENTRY
),
190 ASN1_ITEM_ref(X509_PUBKEY
),
191 ASN1_ITEM_ref(X509_REQ
),
192 ASN1_ITEM_ref(X509_REQ_INFO
),
193 ASN1_ITEM_ref(X509_REVOKED
),
194 ASN1_ITEM_ref(X509_SIG
),
195 ASN1_ITEM_ref(X509_VAL
),
196 #ifndef OPENSSL_NO_DEPRECATED_3_0
197 ASN1_ITEM_ref(ZLONG
),
199 ASN1_ITEM_ref(INT32
),
200 ASN1_ITEM_ref(ZINT32
),
201 ASN1_ITEM_ref(UINT32
),
202 ASN1_ITEM_ref(ZUINT32
),
203 ASN1_ITEM_ref(INT64
),
204 ASN1_ITEM_ref(ZINT64
),
205 ASN1_ITEM_ref(UINT64
),
206 ASN1_ITEM_ref(ZUINT64
),
210 static ASN1_PCTX
*pctx
;
212 #define DO_TEST(TYPE, D2I, I2D, PRINT) { \
213 const unsigned char *p = buf; \
214 unsigned char *der = NULL; \
215 TYPE *type = D2I(NULL, &p, len); \
217 if (type != NULL) { \
219 BIO *bio = BIO_new(BIO_s_null()); \
225 len2 = I2D(type, &der); \
228 TYPE ## _free(type); \
232 #define DO_TEST_PRINT_OFFSET(TYPE, D2I, I2D, PRINT) { \
233 const unsigned char *p = buf; \
234 unsigned char *der = NULL; \
235 TYPE *type = D2I(NULL, &p, len); \
237 if (type != NULL) { \
238 BIO *bio = BIO_new(BIO_s_null()); \
241 PRINT(bio, type, 0); \
246 TYPE ## _free(type); \
250 #define DO_TEST_PRINT_PCTX(TYPE, D2I, I2D, PRINT) { \
251 const unsigned char *p = buf; \
252 unsigned char *der = NULL; \
253 TYPE *type = D2I(NULL, &p, len); \
255 if (type != NULL) { \
256 BIO *bio = BIO_new(BIO_s_null()); \
259 PRINT(bio, type, 0, pctx); \
264 TYPE ## _free(type); \
269 #define DO_TEST_NO_PRINT(TYPE, D2I, I2D) { \
270 const unsigned char *p = buf; \
271 unsigned char *der = NULL; \
272 TYPE *type = D2I(NULL, &p, len); \
274 if (type != NULL) { \
275 BIO *bio = BIO_new(BIO_s_null()); \
280 TYPE ## _free(type); \
285 int FuzzerInitialize(int *argc
, char ***argv
)
288 pctx
= ASN1_PCTX_new();
289 ASN1_PCTX_set_flags(pctx
, ASN1_PCTX_FLAGS_SHOW_ABSENT
|
290 ASN1_PCTX_FLAGS_SHOW_SEQUENCE
| ASN1_PCTX_FLAGS_SHOW_SSOF
|
291 ASN1_PCTX_FLAGS_SHOW_TYPE
| ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME
);
292 ASN1_PCTX_set_str_flags(pctx
, ASN1_STRFLGS_UTF8_CONVERT
|
293 ASN1_STRFLGS_SHOW_TYPE
| ASN1_STRFLGS_DUMP_ALL
);
295 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS
, NULL
);
296 OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
);
298 CRYPTO_free_ex_index(0, -1);
303 int FuzzerTestOneInput(const uint8_t *buf
, size_t len
)
308 for (n
= 0; item_type
[n
] != NULL
; ++n
) {
309 const uint8_t *b
= buf
;
310 unsigned char *der
= NULL
;
311 const ASN1_ITEM
*i
= ASN1_ITEM_ptr(item_type
[n
]);
312 ASN1_VALUE
*o
= ASN1_item_d2i(NULL
, &b
, len
, i
);
316 * Don't print excessively long output to prevent spurious fuzzer
319 if (b
- buf
< 10000) {
320 BIO
*bio
= BIO_new(BIO_s_null());
322 ASN1_item_print(bio
, o
, 4, i
, pctx
);
326 if (ASN1_item_i2d(o
, &der
, i
) > 0) {
329 ASN1_item_free(o
, i
);
333 #ifndef OPENSSL_NO_TS
334 DO_TEST(TS_REQ
, d2i_TS_REQ
, i2d_TS_REQ
, TS_REQ_print_bio
);
335 DO_TEST(TS_MSG_IMPRINT
, d2i_TS_MSG_IMPRINT
, i2d_TS_MSG_IMPRINT
, TS_MSG_IMPRINT_print_bio
);
336 DO_TEST(TS_RESP
, d2i_TS_RESP
, i2d_TS_RESP
, TS_RESP_print_bio
);
337 DO_TEST(TS_STATUS_INFO
, d2i_TS_STATUS_INFO
, i2d_TS_STATUS_INFO
, TS_STATUS_INFO_print_bio
);
338 DO_TEST(TS_TST_INFO
, d2i_TS_TST_INFO
, i2d_TS_TST_INFO
, TS_TST_INFO_print_bio
);
339 DO_TEST_NO_PRINT(TS_ACCURACY
, d2i_TS_ACCURACY
, i2d_TS_ACCURACY
);
341 DO_TEST_NO_PRINT(ESS_ISSUER_SERIAL
, d2i_ESS_ISSUER_SERIAL
, i2d_ESS_ISSUER_SERIAL
);
342 DO_TEST_NO_PRINT(ESS_CERT_ID
, d2i_ESS_CERT_ID
, i2d_ESS_CERT_ID
);
343 DO_TEST_NO_PRINT(ESS_SIGNING_CERT
, d2i_ESS_SIGNING_CERT
, i2d_ESS_SIGNING_CERT
);
344 DO_TEST_NO_PRINT(ESS_CERT_ID_V2
, d2i_ESS_CERT_ID_V2
, i2d_ESS_CERT_ID_V2
);
345 DO_TEST_NO_PRINT(ESS_SIGNING_CERT_V2
, d2i_ESS_SIGNING_CERT_V2
, i2d_ESS_SIGNING_CERT_V2
);
346 #if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0)
347 DO_TEST_NO_PRINT(DH
, d2i_DHparams
, i2d_DHparams
);
348 DO_TEST_NO_PRINT(DH
, d2i_DHxparams
, i2d_DHxparams
);
350 #ifndef OPENSSL_NO_DSA
351 DO_TEST_NO_PRINT(DSA_SIG
, d2i_DSA_SIG
, i2d_DSA_SIG
);
352 # ifndef OPENSSL_NO_DEPRECATED_3_0
353 DO_TEST_NO_PRINT(DSA
, d2i_DSAPrivateKey
, i2d_DSAPrivateKey
);
354 DO_TEST_NO_PRINT(DSA
, d2i_DSAPublicKey
, i2d_DSAPublicKey
);
355 DO_TEST_NO_PRINT(DSA
, d2i_DSAparams
, i2d_DSAparams
);
358 #ifndef OPENSSL_NO_DEPRECATED_3_0
359 DO_TEST_NO_PRINT(RSA
, d2i_RSAPublicKey
, i2d_RSAPublicKey
);
361 #ifndef OPENSSL_NO_EC
362 # ifndef OPENSSL_NO_DEPRECATED_3_0
363 DO_TEST_PRINT_OFFSET(EC_GROUP
, d2i_ECPKParameters
, i2d_ECPKParameters
, ECPKParameters_print
);
364 DO_TEST_PRINT_OFFSET(EC_KEY
, d2i_ECPrivateKey
, i2d_ECPrivateKey
, EC_KEY_print
);
365 DO_TEST(EC_KEY
, d2i_ECParameters
, i2d_ECParameters
, ECParameters_print
);
366 DO_TEST_NO_PRINT(ECDSA_SIG
, d2i_ECDSA_SIG
, i2d_ECDSA_SIG
);
369 DO_TEST_PRINT_PCTX(EVP_PKEY
, d2i_AutoPrivateKey
, i2d_PrivateKey
, EVP_PKEY_print_private
);
370 DO_TEST(SSL_SESSION
, d2i_SSL_SESSION
, i2d_SSL_SESSION
, SSL_SESSION_print
);
377 void FuzzerCleanup(void)
379 ASN1_PCTX_free(pctx
);