9b122fc7a91a241c2bccda38dc875a48c32344e4
[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/ec.h>
27 #include <openssl/ocsp.h>
28 #include <openssl/pkcs12.h>
29 #include <openssl/rsa.h>
30 #include <openssl/ts.h>
31 #include <openssl/x509v3.h>
32 #include <openssl/cms.h>
33 #include <openssl/ess.h>
34 #include <openssl/err.h>
35 #include <openssl/rand.h>
36 #include <openssl/bio.h>
37 #include <openssl/evp.h>
38 #include <openssl/ssl.h>
39 #include <internal/nelem.h>
40 #include "fuzzer.h"
41
42 #include "rand.inc"
43
44 static ASN1_ITEM_EXP *item_type[] = {
45     ASN1_ITEM_ref(ACCESS_DESCRIPTION),
46 #ifndef OPENSSL_NO_RFC3779
47     ASN1_ITEM_ref(ASIdentifierChoice),
48     ASN1_ITEM_ref(ASIdentifiers),
49     ASN1_ITEM_ref(ASIdOrRange),
50 #endif
51     ASN1_ITEM_ref(ASN1_ANY),
52     ASN1_ITEM_ref(ASN1_BIT_STRING),
53     ASN1_ITEM_ref(ASN1_BMPSTRING),
54     ASN1_ITEM_ref(ASN1_BOOLEAN),
55     ASN1_ITEM_ref(ASN1_ENUMERATED),
56     ASN1_ITEM_ref(ASN1_FBOOLEAN),
57     ASN1_ITEM_ref(ASN1_GENERALIZEDTIME),
58     ASN1_ITEM_ref(ASN1_GENERALSTRING),
59     ASN1_ITEM_ref(ASN1_IA5STRING),
60     ASN1_ITEM_ref(ASN1_INTEGER),
61     ASN1_ITEM_ref(ASN1_NULL),
62     ASN1_ITEM_ref(ASN1_OBJECT),
63     ASN1_ITEM_ref(ASN1_OCTET_STRING),
64     ASN1_ITEM_ref(ASN1_OCTET_STRING_NDEF),
65     ASN1_ITEM_ref(ASN1_PRINTABLE),
66     ASN1_ITEM_ref(ASN1_PRINTABLESTRING),
67     ASN1_ITEM_ref(ASN1_SEQUENCE),
68     ASN1_ITEM_ref(ASN1_SEQUENCE_ANY),
69     ASN1_ITEM_ref(ASN1_SET_ANY),
70     ASN1_ITEM_ref(ASN1_T61STRING),
71     ASN1_ITEM_ref(ASN1_TBOOLEAN),
72     ASN1_ITEM_ref(ASN1_TIME),
73     ASN1_ITEM_ref(ASN1_UNIVERSALSTRING),
74     ASN1_ITEM_ref(ASN1_UTCTIME),
75     ASN1_ITEM_ref(ASN1_UTF8STRING),
76     ASN1_ITEM_ref(ASN1_VISIBLESTRING),
77 #ifndef OPENSSL_NO_RFC3779
78     ASN1_ITEM_ref(ASRange),
79 #endif
80     ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
81     ASN1_ITEM_ref(AUTHORITY_KEYID),
82     ASN1_ITEM_ref(BASIC_CONSTRAINTS),
83     ASN1_ITEM_ref(BIGNUM),
84     ASN1_ITEM_ref(CBIGNUM),
85     ASN1_ITEM_ref(CERTIFICATEPOLICIES),
86 #ifndef OPENSSL_NO_CMS
87     ASN1_ITEM_ref(CMS_ContentInfo),
88     ASN1_ITEM_ref(CMS_ReceiptRequest),
89     ASN1_ITEM_ref(CRL_DIST_POINTS),
90 #endif
91 #ifndef OPENSSL_NO_DH
92     ASN1_ITEM_ref(DHparams),
93 #endif
94     ASN1_ITEM_ref(DIRECTORYSTRING),
95     ASN1_ITEM_ref(DISPLAYTEXT),
96     ASN1_ITEM_ref(DIST_POINT),
97     ASN1_ITEM_ref(DIST_POINT_NAME),
98 #ifndef OPENSSL_NO_EC
99     ASN1_ITEM_ref(ECPARAMETERS),
100     ASN1_ITEM_ref(ECPKPARAMETERS),
101 #endif
102     ASN1_ITEM_ref(EDIPARTYNAME),
103     ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
104     ASN1_ITEM_ref(GENERAL_NAME),
105     ASN1_ITEM_ref(GENERAL_NAMES),
106     ASN1_ITEM_ref(GENERAL_SUBTREE),
107 #ifndef OPENSSL_NO_RFC3779
108     ASN1_ITEM_ref(IPAddressChoice),
109     ASN1_ITEM_ref(IPAddressFamily),
110     ASN1_ITEM_ref(IPAddressOrRange),
111     ASN1_ITEM_ref(IPAddressRange),
112 #endif
113     ASN1_ITEM_ref(ISSUING_DIST_POINT),
114 #ifndef OPENSSL_NO_DEPRECATED_3_0
115     ASN1_ITEM_ref(LONG),
116 #endif
117     ASN1_ITEM_ref(NAME_CONSTRAINTS),
118     ASN1_ITEM_ref(NETSCAPE_CERT_SEQUENCE),
119     ASN1_ITEM_ref(NETSCAPE_SPKAC),
120     ASN1_ITEM_ref(NETSCAPE_SPKI),
121     ASN1_ITEM_ref(NOTICEREF),
122 #ifndef OPENSSL_NO_OCSP
123     ASN1_ITEM_ref(OCSP_BASICRESP),
124     ASN1_ITEM_ref(OCSP_CERTID),
125     ASN1_ITEM_ref(OCSP_CERTSTATUS),
126     ASN1_ITEM_ref(OCSP_CRLID),
127     ASN1_ITEM_ref(OCSP_ONEREQ),
128     ASN1_ITEM_ref(OCSP_REQINFO),
129     ASN1_ITEM_ref(OCSP_REQUEST),
130     ASN1_ITEM_ref(OCSP_RESPBYTES),
131     ASN1_ITEM_ref(OCSP_RESPDATA),
132     ASN1_ITEM_ref(OCSP_RESPID),
133     ASN1_ITEM_ref(OCSP_RESPONSE),
134     ASN1_ITEM_ref(OCSP_REVOKEDINFO),
135     ASN1_ITEM_ref(OCSP_SERVICELOC),
136     ASN1_ITEM_ref(OCSP_SIGNATURE),
137     ASN1_ITEM_ref(OCSP_SINGLERESP),
138 #endif
139     ASN1_ITEM_ref(OTHERNAME),
140     ASN1_ITEM_ref(PBE2PARAM),
141     ASN1_ITEM_ref(PBEPARAM),
142     ASN1_ITEM_ref(PBKDF2PARAM),
143     ASN1_ITEM_ref(PKCS12),
144     ASN1_ITEM_ref(PKCS12_AUTHSAFES),
145     ASN1_ITEM_ref(PKCS12_BAGS),
146     ASN1_ITEM_ref(PKCS12_MAC_DATA),
147     ASN1_ITEM_ref(PKCS12_SAFEBAG),
148     ASN1_ITEM_ref(PKCS12_SAFEBAGS),
149     ASN1_ITEM_ref(PKCS7),
150     ASN1_ITEM_ref(PKCS7_ATTR_SIGN),
151     ASN1_ITEM_ref(PKCS7_ATTR_VERIFY),
152     ASN1_ITEM_ref(PKCS7_DIGEST),
153     ASN1_ITEM_ref(PKCS7_ENC_CONTENT),
154     ASN1_ITEM_ref(PKCS7_ENCRYPT),
155     ASN1_ITEM_ref(PKCS7_ENVELOPE),
156     ASN1_ITEM_ref(PKCS7_ISSUER_AND_SERIAL),
157     ASN1_ITEM_ref(PKCS7_RECIP_INFO),
158     ASN1_ITEM_ref(PKCS7_SIGNED),
159     ASN1_ITEM_ref(PKCS7_SIGN_ENVELOPE),
160     ASN1_ITEM_ref(PKCS7_SIGNER_INFO),
161     ASN1_ITEM_ref(PKCS8_PRIV_KEY_INFO),
162     ASN1_ITEM_ref(PKEY_USAGE_PERIOD),
163     ASN1_ITEM_ref(POLICY_CONSTRAINTS),
164     ASN1_ITEM_ref(POLICYINFO),
165     ASN1_ITEM_ref(POLICY_MAPPING),
166     ASN1_ITEM_ref(POLICY_MAPPINGS),
167     ASN1_ITEM_ref(POLICYQUALINFO),
168     ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
169     ASN1_ITEM_ref(PROXY_POLICY),
170     ASN1_ITEM_ref(RSA_OAEP_PARAMS),
171     ASN1_ITEM_ref(RSAPrivateKey),
172     ASN1_ITEM_ref(RSA_PSS_PARAMS),
173     ASN1_ITEM_ref(RSAPublicKey),
174     ASN1_ITEM_ref(SXNET),
175     ASN1_ITEM_ref(SXNETID),
176     ASN1_ITEM_ref(USERNOTICE),
177     ASN1_ITEM_ref(X509),
178     ASN1_ITEM_ref(X509_ALGOR),
179     ASN1_ITEM_ref(X509_ALGORS),
180     ASN1_ITEM_ref(X509_ATTRIBUTE),
181     ASN1_ITEM_ref(X509_CERT_AUX),
182     ASN1_ITEM_ref(X509_CINF),
183     ASN1_ITEM_ref(X509_CRL),
184     ASN1_ITEM_ref(X509_CRL_INFO),
185     ASN1_ITEM_ref(X509_EXTENSION),
186     ASN1_ITEM_ref(X509_EXTENSIONS),
187     ASN1_ITEM_ref(X509_NAME),
188     ASN1_ITEM_ref(X509_NAME_ENTRY),
189     ASN1_ITEM_ref(X509_PUBKEY),
190     ASN1_ITEM_ref(X509_REQ),
191     ASN1_ITEM_ref(X509_REQ_INFO),
192     ASN1_ITEM_ref(X509_REVOKED),
193     ASN1_ITEM_ref(X509_SIG),
194     ASN1_ITEM_ref(X509_VAL),
195 #ifndef OPENSSL_NO_DEPRECATED_3_0
196     ASN1_ITEM_ref(ZLONG),
197 #endif
198     ASN1_ITEM_ref(INT32),
199     ASN1_ITEM_ref(ZINT32),
200     ASN1_ITEM_ref(UINT32),
201     ASN1_ITEM_ref(ZUINT32),
202     ASN1_ITEM_ref(INT64),
203     ASN1_ITEM_ref(ZINT64),
204     ASN1_ITEM_ref(UINT64),
205     ASN1_ITEM_ref(ZUINT64),
206     NULL
207 };
208
209 static ASN1_PCTX *pctx;
210
211 #define DO_TEST(TYPE, D2I, I2D, PRINT) { \
212     const unsigned char *p = buf; \
213     unsigned char *der = NULL; \
214     TYPE *type = D2I(NULL, &p, len); \
215     \
216     if (type != NULL) { \
217         int len2; \
218         BIO *bio = BIO_new(BIO_s_null()); \
219         \
220         PRINT(bio, type); \
221         BIO_free(bio); \
222         len2 = I2D(type, &der); \
223         if (len2 != 0) {} \
224         OPENSSL_free(der); \
225         TYPE ## _free(type); \
226     } \
227 }
228
229 #define DO_TEST_PRINT_OFFSET(TYPE, D2I, I2D, PRINT) { \
230     const unsigned char *p = buf; \
231     unsigned char *der = NULL; \
232     TYPE *type = D2I(NULL, &p, len); \
233     \
234     if (type != NULL) { \
235         BIO *bio = BIO_new(BIO_s_null()); \
236         \
237         PRINT(bio, type, 0); \
238         BIO_free(bio); \
239         I2D(type, &der); \
240         OPENSSL_free(der); \
241         TYPE ## _free(type); \
242     } \
243 }
244
245 #define DO_TEST_PRINT_PCTX(TYPE, D2I, I2D, PRINT) { \
246     const unsigned char *p = buf; \
247     unsigned char *der = NULL; \
248     TYPE *type = D2I(NULL, &p, len); \
249     \
250     if (type != NULL) { \
251         BIO *bio = BIO_new(BIO_s_null()); \
252         \
253         PRINT(bio, type, 0, pctx); \
254         BIO_free(bio); \
255         I2D(type, &der); \
256         OPENSSL_free(der); \
257         TYPE ## _free(type); \
258     } \
259 }
260
261
262 #define DO_TEST_NO_PRINT(TYPE, D2I, I2D) { \
263     const unsigned char *p = buf; \
264     unsigned char *der = NULL; \
265     TYPE *type = D2I(NULL, &p, len); \
266     \
267     if (type != NULL) { \
268         BIO *bio = BIO_new(BIO_s_null()); \
269         \
270         BIO_free(bio); \
271         I2D(type, &der); \
272         OPENSSL_free(der); \
273         TYPE ## _free(type); \
274     } \
275 }
276
277
278 int FuzzerInitialize(int *argc, char ***argv)
279 {
280     pctx = ASN1_PCTX_new();
281     ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT |
282         ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF |
283         ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME);
284     ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT |
285         ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL);
286
287     OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
288     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
289     ERR_clear_error();
290     CRYPTO_free_ex_index(0, -1);
291     FuzzerSetRand();
292
293     return 1;
294 }
295
296 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
297 {
298     int n;
299
300
301     for (n = 0; item_type[n] != NULL; ++n) {
302         const uint8_t *b = buf;
303         unsigned char *der = NULL;
304         const ASN1_ITEM *i = ASN1_ITEM_ptr(item_type[n]);
305         ASN1_VALUE *o = ASN1_item_d2i(NULL, &b, len, i);
306
307         if (o != NULL) {
308             BIO *bio = BIO_new(BIO_s_null());
309
310             ASN1_item_print(bio, o, 4, i, pctx);
311             BIO_free(bio);
312             ASN1_item_i2d(o, &der, i);
313             OPENSSL_free(der);
314             ASN1_item_free(o, i);
315         }
316     }
317
318 #ifndef OPENSSL_NO_TS
319     DO_TEST(TS_REQ, d2i_TS_REQ, i2d_TS_REQ, TS_REQ_print_bio);
320     DO_TEST(TS_MSG_IMPRINT, d2i_TS_MSG_IMPRINT, i2d_TS_MSG_IMPRINT, TS_MSG_IMPRINT_print_bio);
321     DO_TEST(TS_RESP, d2i_TS_RESP, i2d_TS_RESP, TS_RESP_print_bio);
322     DO_TEST(TS_STATUS_INFO, d2i_TS_STATUS_INFO, i2d_TS_STATUS_INFO, TS_STATUS_INFO_print_bio);
323     DO_TEST(TS_TST_INFO, d2i_TS_TST_INFO, i2d_TS_TST_INFO, TS_TST_INFO_print_bio);
324     DO_TEST_NO_PRINT(TS_ACCURACY, d2i_TS_ACCURACY, i2d_TS_ACCURACY);
325 #endif
326     DO_TEST_NO_PRINT(ESS_ISSUER_SERIAL, d2i_ESS_ISSUER_SERIAL, i2d_ESS_ISSUER_SERIAL);
327     DO_TEST_NO_PRINT(ESS_CERT_ID, d2i_ESS_CERT_ID, i2d_ESS_CERT_ID);
328     DO_TEST_NO_PRINT(ESS_SIGNING_CERT, d2i_ESS_SIGNING_CERT, i2d_ESS_SIGNING_CERT);
329     DO_TEST_NO_PRINT(ESS_CERT_ID_V2, d2i_ESS_CERT_ID_V2, i2d_ESS_CERT_ID_V2);
330     DO_TEST_NO_PRINT(ESS_SIGNING_CERT_V2, d2i_ESS_SIGNING_CERT_V2, i2d_ESS_SIGNING_CERT_V2);
331 #ifndef OPENSSL_NO_DH
332     DO_TEST_NO_PRINT(DH, d2i_DHparams, i2d_DHparams);
333     DO_TEST_NO_PRINT(DH, d2i_DHxparams, i2d_DHxparams);
334 #endif
335 #ifndef OPENSSL_NO_DSA
336     DO_TEST_NO_PRINT(DSA_SIG, d2i_DSA_SIG, i2d_DSA_SIG);
337     DO_TEST_NO_PRINT(DSA, d2i_DSAPrivateKey, i2d_DSAPrivateKey);
338     DO_TEST_NO_PRINT(DSA, d2i_DSAPublicKey, i2d_DSAPublicKey);
339     DO_TEST_NO_PRINT(DSA, d2i_DSAparams, i2d_DSAparams);
340 #endif
341     DO_TEST_NO_PRINT(RSA, d2i_RSAPublicKey, i2d_RSAPublicKey);
342 #ifndef OPENSSL_NO_EC
343     DO_TEST_PRINT_OFFSET(EC_GROUP, d2i_ECPKParameters, i2d_ECPKParameters, ECPKParameters_print);
344     DO_TEST_PRINT_OFFSET(EC_KEY, d2i_ECPrivateKey, i2d_ECPrivateKey, EC_KEY_print);
345     DO_TEST(EC_KEY, d2i_ECParameters, i2d_ECParameters, ECParameters_print);
346 # ifndef OPENSSL_NO_DEPRECATED_3_0
347     DO_TEST_NO_PRINT(ECDSA_SIG, d2i_ECDSA_SIG, i2d_ECDSA_SIG);
348 # endif
349 #endif
350     DO_TEST_PRINT_PCTX(EVP_PKEY, d2i_AutoPrivateKey, i2d_PrivateKey, EVP_PKEY_print_private);
351     DO_TEST(SSL_SESSION, d2i_SSL_SESSION, i2d_SSL_SESSION, SSL_SESSION_print);
352
353     ERR_clear_error();
354
355     return 0;
356 }
357
358 void FuzzerCleanup(void)
359 {
360     ASN1_PCTX_free(pctx);
361 }