1 /* $OpenBSD: test_fuzz.c,v 1.6 2015/12/07 02:20:46 djm Exp $ */
3 * Fuzz tests for key parsing
5 * Placed in the public domain
10 #include <sys/types.h>
11 #include <sys/param.h>
22 #include <openssl/bn.h>
23 #include <openssl/rsa.h>
24 #include <openssl/dsa.h>
25 #include <openssl/objects.h>
26 #ifdef OPENSSL_HAS_NISTP256
27 # include <openssl/ec.h>
30 #include "../test_helper/test_helper.h"
39 void sshkey_fuzz_tests(void);
44 fprintf(stderr, "Failed during fuzz:\n");
45 fuzz_dump((struct fuzz *)fuzz);
49 public_fuzz(struct sshkey *k)
55 ASSERT_PTR_NE(buf = sshbuf_new(), NULL);
56 ASSERT_INT_EQ(sshkey_putb(k, buf), 0);
57 /* XXX need a way to run the tests in "slow, but complete" mode */
58 fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | /* XXX too slow FUZZ_2_BIT_FLIP | */
59 FUZZ_1_BYTE_FLIP | /* XXX too slow FUZZ_2_BYTE_FLIP | */
60 FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END,
61 sshbuf_mutable_ptr(buf), sshbuf_len(buf));
62 ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(buf), sshbuf_len(buf),
66 TEST_ONERROR(onerror, fuzz);
67 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
68 if (sshkey_from_blob(fuzz_ptr(fuzz), fuzz_len(fuzz), &k1) == 0)
75 sig_fuzz(struct sshkey *k, const char *sig_alg)
78 u_char *sig, c[] = "some junk to be signed";
81 ASSERT_INT_EQ(sshkey_sign(k, &sig, &l, c, sizeof(c), sig_alg, 0), 0);
82 ASSERT_SIZE_T_GT(l, 0);
83 fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | /* too slow FUZZ_2_BIT_FLIP | */
84 FUZZ_1_BYTE_FLIP | FUZZ_2_BYTE_FLIP |
85 FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END, sig, l);
86 ASSERT_INT_EQ(sshkey_verify(k, sig, l, c, sizeof(c), 0), 0);
88 TEST_ONERROR(onerror, fuzz);
89 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
90 /* Ensure 1-bit difference at least */
91 if (fuzz_matches_original(fuzz))
93 ASSERT_INT_NE(sshkey_verify(k, fuzz_ptr(fuzz), fuzz_len(fuzz),
100 sshkey_fuzz_tests(void)
103 struct sshbuf *buf, *fuzzed;
108 TEST_START("fuzz RSA1 private");
109 buf = load_file("rsa1_1");
110 fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | FUZZ_1_BYTE_FLIP |
111 FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END,
112 sshbuf_mutable_ptr(buf), sshbuf_len(buf));
113 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
116 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
117 TEST_ONERROR(onerror, fuzz);
118 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
119 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
121 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
123 sshbuf_reset(fuzzed);
129 TEST_START("fuzz RSA1 public");
130 buf = load_file("rsa1_1_pw");
131 fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | FUZZ_1_BYTE_FLIP |
132 FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END,
133 sshbuf_mutable_ptr(buf), sshbuf_len(buf));
134 ASSERT_INT_EQ(sshkey_parse_public_rsa1_fileblob(buf, &k1, NULL), 0);
137 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
138 TEST_ONERROR(onerror, fuzz);
139 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
140 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
142 if (sshkey_parse_public_rsa1_fileblob(fuzzed, &k1, NULL) == 0)
144 sshbuf_reset(fuzzed);
151 TEST_START("fuzz RSA private");
152 buf = load_file("rsa_1");
153 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
155 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
158 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
159 TEST_ONERROR(onerror, fuzz);
160 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
161 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
163 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
165 sshbuf_reset(fuzzed);
171 TEST_START("fuzz RSA new-format private");
172 buf = load_file("rsa_n");
173 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
175 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
178 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
179 TEST_ONERROR(onerror, fuzz);
180 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
181 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
183 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
185 sshbuf_reset(fuzzed);
191 TEST_START("fuzz DSA private");
192 buf = load_file("dsa_1");
193 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
195 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
198 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
199 TEST_ONERROR(onerror, fuzz);
200 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
201 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
203 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
205 sshbuf_reset(fuzzed);
211 TEST_START("fuzz DSA new-format private");
212 buf = load_file("dsa_n");
213 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
215 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
218 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
219 TEST_ONERROR(onerror, fuzz);
220 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
221 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
223 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
225 sshbuf_reset(fuzzed);
231 #ifdef OPENSSL_HAS_ECC
232 TEST_START("fuzz ECDSA private");
233 buf = load_file("ecdsa_1");
234 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
236 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
239 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
240 TEST_ONERROR(onerror, fuzz);
241 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
242 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
244 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
246 sshbuf_reset(fuzzed);
252 TEST_START("fuzz ECDSA new-format private");
253 buf = load_file("ecdsa_n");
254 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
256 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
259 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
260 TEST_ONERROR(onerror, fuzz);
261 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
262 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
264 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
266 sshbuf_reset(fuzzed);
273 TEST_START("fuzz Ed25519 private");
274 buf = load_file("ed25519_1");
275 fuzz = fuzz_begin(FUZZ_BASE64, sshbuf_mutable_ptr(buf),
277 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
280 ASSERT_PTR_NE(fuzzed = sshbuf_new(), NULL);
281 TEST_ONERROR(onerror, fuzz);
282 for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
283 r = sshbuf_put(fuzzed, fuzz_ptr(fuzz), fuzz_len(fuzz));
285 if (sshkey_parse_private_fileblob(fuzzed, "", &k1, NULL) == 0)
287 sshbuf_reset(fuzzed);
293 TEST_START("fuzz RSA public");
294 buf = load_file("rsa_1");
295 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
301 TEST_START("fuzz RSA cert");
302 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0);
307 TEST_START("fuzz DSA public");
308 buf = load_file("dsa_1");
309 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
315 TEST_START("fuzz DSA cert");
316 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("dsa_1"), &k1), 0);
321 #ifdef OPENSSL_HAS_ECC
322 TEST_START("fuzz ECDSA public");
323 buf = load_file("ecdsa_1");
324 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
330 TEST_START("fuzz ECDSA cert");
331 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("ecdsa_1"), &k1), 0);
337 TEST_START("fuzz Ed25519 public");
338 buf = load_file("ed25519_1");
339 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
345 TEST_START("fuzz Ed25519 cert");
346 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("ed25519_1"), &k1), 0);
351 TEST_START("fuzz RSA sig");
352 buf = load_file("rsa_1");
353 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
355 sig_fuzz(k1, "ssh-rsa");
359 TEST_START("fuzz RSA SHA256 sig");
360 buf = load_file("rsa_1");
361 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
363 sig_fuzz(k1, "rsa-sha2-256");
367 TEST_START("fuzz RSA SHA512 sig");
368 buf = load_file("rsa_1");
369 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
371 sig_fuzz(k1, "rsa-sha2-512");
375 TEST_START("fuzz DSA sig");
376 buf = load_file("dsa_1");
377 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
383 #ifdef OPENSSL_HAS_ECC
384 TEST_START("fuzz ECDSA sig");
385 buf = load_file("ecdsa_1");
386 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
393 TEST_START("fuzz Ed25519 sig");
394 buf = load_file("ed25519_1");
395 ASSERT_INT_EQ(sshkey_parse_private_fileblob(buf, "", &k1, NULL), 0);
401 /* XXX fuzz decoded new-format blobs too */