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[openssl.git] / fuzz / asn1.c
1 /*
2  * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
3  *
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.
9  */
10
11 /*
12  * Fuzz ASN.1 parsing for various data structures. Specify which on the
13  * command line:
14  *
15  * asn1 <data structure>
16  */
17
18 /* We need to use some deprecated APIs */
19 #define OPENSSL_SUPPRESS_DEPRECATED
20
21 #include <stdio.h>
22 #include <string.h>
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>
41 #include "fuzzer.h"
42
43 #include "rand.inc"
44
45 static ASN1_ITEM_EXP *item_type[] = {
46     ASN1_ITEM_ref(ACCESS_DESCRIPTION),
47 #ifndef OPENSSL_NO_RFC3779
48     ASN1_ITEM_ref(ASIdentifierChoice),
49     ASN1_ITEM_ref(ASIdentifiers),
50     ASN1_ITEM_ref(ASIdOrRange),
51 #endif
52     ASN1_ITEM_ref(ASN1_ANY),
53     ASN1_ITEM_ref(ASN1_BIT_STRING),
54     ASN1_ITEM_ref(ASN1_BMPSTRING),
55     ASN1_ITEM_ref(ASN1_BOOLEAN),
56     ASN1_ITEM_ref(ASN1_ENUMERATED),
57     ASN1_ITEM_ref(ASN1_FBOOLEAN),
58     ASN1_ITEM_ref(ASN1_GENERALIZEDTIME),
59     ASN1_ITEM_ref(ASN1_GENERALSTRING),
60     ASN1_ITEM_ref(ASN1_IA5STRING),
61     ASN1_ITEM_ref(ASN1_INTEGER),
62     ASN1_ITEM_ref(ASN1_NULL),
63     ASN1_ITEM_ref(ASN1_OBJECT),
64     ASN1_ITEM_ref(ASN1_OCTET_STRING),
65     ASN1_ITEM_ref(ASN1_OCTET_STRING_NDEF),
66     ASN1_ITEM_ref(ASN1_PRINTABLE),
67     ASN1_ITEM_ref(ASN1_PRINTABLESTRING),
68     ASN1_ITEM_ref(ASN1_SEQUENCE),
69     ASN1_ITEM_ref(ASN1_SEQUENCE_ANY),
70     ASN1_ITEM_ref(ASN1_SET_ANY),
71     ASN1_ITEM_ref(ASN1_T61STRING),
72     ASN1_ITEM_ref(ASN1_TBOOLEAN),
73     ASN1_ITEM_ref(ASN1_TIME),
74     ASN1_ITEM_ref(ASN1_UNIVERSALSTRING),
75     ASN1_ITEM_ref(ASN1_UTCTIME),
76     ASN1_ITEM_ref(ASN1_UTF8STRING),
77     ASN1_ITEM_ref(ASN1_VISIBLESTRING),
78 #ifndef OPENSSL_NO_RFC3779
79     ASN1_ITEM_ref(ASRange),
80 #endif
81     ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
82     ASN1_ITEM_ref(AUTHORITY_KEYID),
83     ASN1_ITEM_ref(BASIC_CONSTRAINTS),
84     ASN1_ITEM_ref(BIGNUM),
85     ASN1_ITEM_ref(CBIGNUM),
86     ASN1_ITEM_ref(CERTIFICATEPOLICIES),
87 #ifndef OPENSSL_NO_CMS
88     ASN1_ITEM_ref(CMS_ContentInfo),
89     ASN1_ITEM_ref(CMS_ReceiptRequest),
90     ASN1_ITEM_ref(CRL_DIST_POINTS),
91 #endif
92 #ifndef OPENSSL_NO_DH
93     ASN1_ITEM_ref(DHparams),
94 #endif
95     ASN1_ITEM_ref(DIRECTORYSTRING),
96     ASN1_ITEM_ref(DISPLAYTEXT),
97     ASN1_ITEM_ref(DIST_POINT),
98     ASN1_ITEM_ref(DIST_POINT_NAME),
99 #ifndef OPENSSL_NO_EC
100     ASN1_ITEM_ref(ECPARAMETERS),
101     ASN1_ITEM_ref(ECPKPARAMETERS),
102 #endif
103     ASN1_ITEM_ref(EDIPARTYNAME),
104     ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
105     ASN1_ITEM_ref(GENERAL_NAME),
106     ASN1_ITEM_ref(GENERAL_NAMES),
107     ASN1_ITEM_ref(GENERAL_SUBTREE),
108 #ifndef OPENSSL_NO_RFC3779
109     ASN1_ITEM_ref(IPAddressChoice),
110     ASN1_ITEM_ref(IPAddressFamily),
111     ASN1_ITEM_ref(IPAddressOrRange),
112     ASN1_ITEM_ref(IPAddressRange),
113 #endif
114     ASN1_ITEM_ref(ISSUING_DIST_POINT),
115 #ifndef OPENSSL_NO_DEPRECATED_3_0
116     ASN1_ITEM_ref(LONG),
117 #endif
118     ASN1_ITEM_ref(NAME_CONSTRAINTS),
119     ASN1_ITEM_ref(NETSCAPE_CERT_SEQUENCE),
120     ASN1_ITEM_ref(NETSCAPE_SPKAC),
121     ASN1_ITEM_ref(NETSCAPE_SPKI),
122     ASN1_ITEM_ref(NOTICEREF),
123 #ifndef OPENSSL_NO_OCSP
124     ASN1_ITEM_ref(OCSP_BASICRESP),
125     ASN1_ITEM_ref(OCSP_CERTID),
126     ASN1_ITEM_ref(OCSP_CERTSTATUS),
127     ASN1_ITEM_ref(OCSP_CRLID),
128     ASN1_ITEM_ref(OCSP_ONEREQ),
129     ASN1_ITEM_ref(OCSP_REQINFO),
130     ASN1_ITEM_ref(OCSP_REQUEST),
131     ASN1_ITEM_ref(OCSP_RESPBYTES),
132     ASN1_ITEM_ref(OCSP_RESPDATA),
133     ASN1_ITEM_ref(OCSP_RESPID),
134     ASN1_ITEM_ref(OCSP_RESPONSE),
135     ASN1_ITEM_ref(OCSP_REVOKEDINFO),
136     ASN1_ITEM_ref(OCSP_SERVICELOC),
137     ASN1_ITEM_ref(OCSP_SIGNATURE),
138     ASN1_ITEM_ref(OCSP_SINGLERESP),
139 #endif
140     ASN1_ITEM_ref(OTHERNAME),
141     ASN1_ITEM_ref(PBE2PARAM),
142     ASN1_ITEM_ref(PBEPARAM),
143     ASN1_ITEM_ref(PBKDF2PARAM),
144     ASN1_ITEM_ref(PKCS12),
145     ASN1_ITEM_ref(PKCS12_AUTHSAFES),
146     ASN1_ITEM_ref(PKCS12_BAGS),
147     ASN1_ITEM_ref(PKCS12_MAC_DATA),
148     ASN1_ITEM_ref(PKCS12_SAFEBAG),
149     ASN1_ITEM_ref(PKCS12_SAFEBAGS),
150     ASN1_ITEM_ref(PKCS7),
151     ASN1_ITEM_ref(PKCS7_ATTR_SIGN),
152     ASN1_ITEM_ref(PKCS7_ATTR_VERIFY),
153     ASN1_ITEM_ref(PKCS7_DIGEST),
154     ASN1_ITEM_ref(PKCS7_ENC_CONTENT),
155     ASN1_ITEM_ref(PKCS7_ENCRYPT),
156     ASN1_ITEM_ref(PKCS7_ENVELOPE),
157     ASN1_ITEM_ref(PKCS7_ISSUER_AND_SERIAL),
158     ASN1_ITEM_ref(PKCS7_RECIP_INFO),
159     ASN1_ITEM_ref(PKCS7_SIGNED),
160     ASN1_ITEM_ref(PKCS7_SIGN_ENVELOPE),
161     ASN1_ITEM_ref(PKCS7_SIGNER_INFO),
162     ASN1_ITEM_ref(PKCS8_PRIV_KEY_INFO),
163     ASN1_ITEM_ref(PKEY_USAGE_PERIOD),
164     ASN1_ITEM_ref(POLICY_CONSTRAINTS),
165     ASN1_ITEM_ref(POLICYINFO),
166     ASN1_ITEM_ref(POLICY_MAPPING),
167     ASN1_ITEM_ref(POLICY_MAPPINGS),
168     ASN1_ITEM_ref(POLICYQUALINFO),
169     ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
170     ASN1_ITEM_ref(PROXY_POLICY),
171     ASN1_ITEM_ref(RSA_OAEP_PARAMS),
172     ASN1_ITEM_ref(RSA_PSS_PARAMS),
173 #ifndef OPENSSL_NO_DEPRECATED_3_0
174     ASN1_ITEM_ref(RSAPrivateKey),
175     ASN1_ITEM_ref(RSAPublicKey),
176 #endif
177     ASN1_ITEM_ref(SXNET),
178     ASN1_ITEM_ref(SXNETID),
179     ASN1_ITEM_ref(USERNOTICE),
180     ASN1_ITEM_ref(X509),
181     ASN1_ITEM_ref(X509_ALGOR),
182     ASN1_ITEM_ref(X509_ALGORS),
183     ASN1_ITEM_ref(X509_ATTRIBUTE),
184     ASN1_ITEM_ref(X509_CERT_AUX),
185     ASN1_ITEM_ref(X509_CINF),
186     ASN1_ITEM_ref(X509_CRL),
187     ASN1_ITEM_ref(X509_CRL_INFO),
188     ASN1_ITEM_ref(X509_EXTENSION),
189     ASN1_ITEM_ref(X509_EXTENSIONS),
190     ASN1_ITEM_ref(X509_NAME),
191     ASN1_ITEM_ref(X509_NAME_ENTRY),
192     ASN1_ITEM_ref(X509_PUBKEY),
193     ASN1_ITEM_ref(X509_REQ),
194     ASN1_ITEM_ref(X509_REQ_INFO),
195     ASN1_ITEM_ref(X509_REVOKED),
196     ASN1_ITEM_ref(X509_SIG),
197     ASN1_ITEM_ref(X509_VAL),
198 #ifndef OPENSSL_NO_DEPRECATED_3_0
199     ASN1_ITEM_ref(ZLONG),
200 #endif
201     ASN1_ITEM_ref(INT32),
202     ASN1_ITEM_ref(ZINT32),
203     ASN1_ITEM_ref(UINT32),
204     ASN1_ITEM_ref(ZUINT32),
205     ASN1_ITEM_ref(INT64),
206     ASN1_ITEM_ref(ZINT64),
207     ASN1_ITEM_ref(UINT64),
208     ASN1_ITEM_ref(ZUINT64),
209     NULL
210 };
211
212 static ASN1_PCTX *pctx;
213
214 #define DO_TEST(TYPE, D2I, I2D, PRINT) { \
215     const unsigned char *p = buf; \
216     unsigned char *der = NULL; \
217     TYPE *type = D2I(NULL, &p, len); \
218     \
219     if (type != NULL) { \
220         int len2; \
221         BIO *bio = BIO_new(BIO_s_null()); \
222         \
223         PRINT(bio, type); \
224         BIO_free(bio); \
225         len2 = I2D(type, &der); \
226         if (len2 != 0) {} \
227         OPENSSL_free(der); \
228         TYPE ## _free(type); \
229     } \
230 }
231
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); \
236     \
237     if (type != NULL) { \
238         BIO *bio = BIO_new(BIO_s_null()); \
239         \
240         PRINT(bio, type, 0); \
241         BIO_free(bio); \
242         I2D(type, &der); \
243         OPENSSL_free(der); \
244         TYPE ## _free(type); \
245     } \
246 }
247
248 #define DO_TEST_PRINT_PCTX(TYPE, D2I, I2D, PRINT) { \
249     const unsigned char *p = buf; \
250     unsigned char *der = NULL; \
251     TYPE *type = D2I(NULL, &p, len); \
252     \
253     if (type != NULL) { \
254         BIO *bio = BIO_new(BIO_s_null()); \
255         \
256         PRINT(bio, type, 0, pctx); \
257         BIO_free(bio); \
258         I2D(type, &der); \
259         OPENSSL_free(der); \
260         TYPE ## _free(type); \
261     } \
262 }
263
264
265 #define DO_TEST_NO_PRINT(TYPE, D2I, I2D) { \
266     const unsigned char *p = buf; \
267     unsigned char *der = NULL; \
268     TYPE *type = D2I(NULL, &p, len); \
269     \
270     if (type != NULL) { \
271         BIO *bio = BIO_new(BIO_s_null()); \
272         \
273         BIO_free(bio); \
274         I2D(type, &der); \
275         OPENSSL_free(der); \
276         TYPE ## _free(type); \
277     } \
278 }
279
280
281 int FuzzerInitialize(int *argc, char ***argv)
282 {
283     pctx = ASN1_PCTX_new();
284     ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT |
285         ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF |
286         ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME);
287     ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT |
288         ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL);
289
290     OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
291     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
292     ERR_clear_error();
293     CRYPTO_free_ex_index(0, -1);
294     FuzzerSetRand();
295
296     return 1;
297 }
298
299 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
300 {
301     int n;
302
303
304     for (n = 0; item_type[n] != NULL; ++n) {
305         const uint8_t *b = buf;
306         unsigned char *der = NULL;
307         const ASN1_ITEM *i = ASN1_ITEM_ptr(item_type[n]);
308         ASN1_VALUE *o = ASN1_item_d2i(NULL, &b, len, i);
309
310         if (o != NULL) {
311             BIO *bio = BIO_new(BIO_s_null());
312
313             ASN1_item_print(bio, o, 4, i, pctx);
314             BIO_free(bio);
315             ASN1_item_i2d(o, &der, i);
316             OPENSSL_free(der);
317             ASN1_item_free(o, i);
318         }
319     }
320
321 #ifndef OPENSSL_NO_TS
322     DO_TEST(TS_REQ, d2i_TS_REQ, i2d_TS_REQ, TS_REQ_print_bio);
323     DO_TEST(TS_MSG_IMPRINT, d2i_TS_MSG_IMPRINT, i2d_TS_MSG_IMPRINT, TS_MSG_IMPRINT_print_bio);
324     DO_TEST(TS_RESP, d2i_TS_RESP, i2d_TS_RESP, TS_RESP_print_bio);
325     DO_TEST(TS_STATUS_INFO, d2i_TS_STATUS_INFO, i2d_TS_STATUS_INFO, TS_STATUS_INFO_print_bio);
326     DO_TEST(TS_TST_INFO, d2i_TS_TST_INFO, i2d_TS_TST_INFO, TS_TST_INFO_print_bio);
327     DO_TEST_NO_PRINT(TS_ACCURACY, d2i_TS_ACCURACY, i2d_TS_ACCURACY);
328 #endif
329     DO_TEST_NO_PRINT(ESS_ISSUER_SERIAL, d2i_ESS_ISSUER_SERIAL, i2d_ESS_ISSUER_SERIAL);
330     DO_TEST_NO_PRINT(ESS_CERT_ID, d2i_ESS_CERT_ID, i2d_ESS_CERT_ID);
331     DO_TEST_NO_PRINT(ESS_SIGNING_CERT, d2i_ESS_SIGNING_CERT, i2d_ESS_SIGNING_CERT);
332     DO_TEST_NO_PRINT(ESS_CERT_ID_V2, d2i_ESS_CERT_ID_V2, i2d_ESS_CERT_ID_V2);
333     DO_TEST_NO_PRINT(ESS_SIGNING_CERT_V2, d2i_ESS_SIGNING_CERT_V2, i2d_ESS_SIGNING_CERT_V2);
334 #if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0)
335     DO_TEST_NO_PRINT(DH, d2i_DHparams, i2d_DHparams);
336     DO_TEST_NO_PRINT(DH, d2i_DHxparams, i2d_DHxparams);
337 #endif
338 #ifndef OPENSSL_NO_DSA
339     DO_TEST_NO_PRINT(DSA_SIG, d2i_DSA_SIG, i2d_DSA_SIG);
340     DO_TEST_NO_PRINT(DSA, d2i_DSAPrivateKey, i2d_DSAPrivateKey);
341     DO_TEST_NO_PRINT(DSA, d2i_DSAPublicKey, i2d_DSAPublicKey);
342     DO_TEST_NO_PRINT(DSA, d2i_DSAparams, i2d_DSAparams);
343 #endif
344 #ifndef OPENSSL_NO_DEPRECATED_3_0
345     DO_TEST_NO_PRINT(RSA, d2i_RSAPublicKey, i2d_RSAPublicKey);
346 #endif
347 #ifndef OPENSSL_NO_EC
348     DO_TEST_PRINT_OFFSET(EC_GROUP, d2i_ECPKParameters, i2d_ECPKParameters, ECPKParameters_print);
349     DO_TEST_PRINT_OFFSET(EC_KEY, d2i_ECPrivateKey, i2d_ECPrivateKey, EC_KEY_print);
350     DO_TEST(EC_KEY, d2i_ECParameters, i2d_ECParameters, ECParameters_print);
351 # ifndef OPENSSL_NO_DEPRECATED_3_0
352     DO_TEST_NO_PRINT(ECDSA_SIG, d2i_ECDSA_SIG, i2d_ECDSA_SIG);
353 # endif
354 #endif
355     DO_TEST_PRINT_PCTX(EVP_PKEY, d2i_AutoPrivateKey, i2d_PrivateKey, EVP_PKEY_print_private);
356     DO_TEST(SSL_SESSION, d2i_SSL_SESSION, i2d_SSL_SESSION, SSL_SESSION_print);
357
358     ERR_clear_error();
359
360     return 0;
361 }
362
363 void FuzzerCleanup(void)
364 {
365     ASN1_PCTX_free(pctx);
366 }