summaryrefslogtreecommitdiffstats
path: root/regress/unittests/sshbuf/test_sshbuf_getput_fuzz.c
blob: c6b5c29d176b708fada046429474a6d5a532cb29 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/* 	$OpenBSD: test_sshbuf_getput_fuzz.c,v 1.2 2014/05/02 02:54:00 djm Exp $ */
/*
 * Regress test for sshbuf.h buffer API
 *
 * Placed in the public domain
 */

#include "includes.h"

#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#include <stdlib.h>
#include <string.h>

#include <openssl/bn.h>
#include <openssl/objects.h>
#ifdef OPENSSL_HAS_NISTP256
# include <openssl/ec.h>
#endif

#include "../test_helper/test_helper.h"
#include "ssherr.h"
#include "sshbuf.h"

void sshbuf_getput_fuzz_tests(void);

static void
attempt_parse_blob(u_char *blob, size_t len)
{
	struct sshbuf *p1;
	BIGNUM *bn;
#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
	EC_KEY *eck;
#endif
	u_char *s;
	size_t l;
	u_int8_t u8;
	u_int16_t u16;
	u_int32_t u32;
	u_int64_t u64;

	p1 = sshbuf_new();
	ASSERT_PTR_NE(p1, NULL);
	ASSERT_INT_EQ(sshbuf_put(p1, blob, len), 0);
	sshbuf_get_u8(p1, &u8);
	sshbuf_get_u16(p1, &u16);
	sshbuf_get_u32(p1, &u32);
	sshbuf_get_u64(p1, &u64);
	if (sshbuf_get_string(p1, &s, &l) == 0) {
		bzero(s, l);
		free(s);
	}
	bn = BN_new();
	sshbuf_get_bignum1(p1, bn);
	BN_clear_free(bn);
	bn = BN_new();
	sshbuf_get_bignum2(p1, bn);
	BN_clear_free(bn);
#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
	eck = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
	ASSERT_PTR_NE(eck, NULL);
	sshbuf_get_eckey(p1, eck);
	EC_KEY_free(eck);
#endif
	sshbuf_free(p1);
}


static void
onerror(void *fuzz)
{
	fprintf(stderr, "Failed during fuzz:\n");
	fuzz_dump((struct fuzz *)fuzz);
}

void
sshbuf_getput_fuzz_tests(void)
{
	u_char blob[] = {
		/* u8 */
		0xd0,
		/* u16 */
		0xc0, 0xde,
		/* u32 */
		0xfa, 0xce, 0xde, 0xad,
		/* u64 */
		0xfe, 0xed, 0xac, 0x1d, 0x1f, 0x1c, 0xbe, 0xef,
		/* string */
		0x00, 0x00, 0x00, 0x09,
		'O', ' ', 'G', 'o', 'r', 'g', 'o', 'n', '!',
		/* bignum1 */
		0x79,
		0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
		0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
		/* bignum2 */
		0x00, 0x00, 0x00, 0x14,
		0x00,
		0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
		0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
		0x7f, 0xff, 0x11,
		/* EC point (NIST-256 curve) */
		0x00, 0x00, 0x00, 0x41,
		0x04,
		0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06,
		0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57,
		0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86,
		0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99,
		0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b,
		0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2,
		0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
		0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4,
	};
	struct fuzz *fuzz;

	TEST_START("fuzz blob parsing");
	fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | FUZZ_2_BIT_FLIP |
	    FUZZ_1_BYTE_FLIP | FUZZ_2_BYTE_FLIP |
	    FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END, blob, sizeof(blob));
	TEST_ONERROR(onerror, fuzz);
	for(; !fuzz_done(fuzz); fuzz_next(fuzz))
		attempt_parse_blob(blob, sizeof(blob));
	fuzz_cleanup(fuzz);
	TEST_DONE();
	TEST_ONERROR(NULL, NULL);
}