131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/* $OpenBSD: test_sshbuf_getput_fuzz.c,v 1.2 2014/05/02 02:54:00 djm Exp $ */
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/*
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* Regress test for sshbuf.h buffer API
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*
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* Placed in the public domain
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*/
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#include "includes.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef HAVE_STDINT_H
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# include <stdint.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/bn.h>
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#include <openssl/objects.h>
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#ifdef OPENSSL_HAS_NISTP256
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# include <openssl/ec.h>
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#endif
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#include "../test_helper/test_helper.h"
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#include "ssherr.h"
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#include "sshbuf.h"
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void sshbuf_getput_fuzz_tests(void);
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static void
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attempt_parse_blob(u_char *blob, size_t len)
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{
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struct sshbuf *p1;
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BIGNUM *bn;
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#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
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EC_KEY *eck;
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#endif
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u_char *s;
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size_t l;
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u_int8_t u8;
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u_int16_t u16;
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u_int32_t u32;
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u_int64_t u64;
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p1 = sshbuf_new();
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ASSERT_PTR_NE(p1, NULL);
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ASSERT_INT_EQ(sshbuf_put(p1, blob, len), 0);
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sshbuf_get_u8(p1, &u8);
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sshbuf_get_u16(p1, &u16);
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sshbuf_get_u32(p1, &u32);
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sshbuf_get_u64(p1, &u64);
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if (sshbuf_get_string(p1, &s, &l) == 0) {
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bzero(s, l);
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free(s);
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}
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bn = BN_new();
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sshbuf_get_bignum1(p1, bn);
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BN_clear_free(bn);
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bn = BN_new();
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sshbuf_get_bignum2(p1, bn);
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BN_clear_free(bn);
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#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
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eck = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
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ASSERT_PTR_NE(eck, NULL);
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sshbuf_get_eckey(p1, eck);
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EC_KEY_free(eck);
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#endif
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sshbuf_free(p1);
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}
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static void
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onerror(void *fuzz)
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{
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fprintf(stderr, "Failed during fuzz:\n");
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fuzz_dump((struct fuzz *)fuzz);
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}
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void
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sshbuf_getput_fuzz_tests(void)
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{
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u_char blob[] = {
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/* u8 */
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0xd0,
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/* u16 */
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0xc0, 0xde,
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/* u32 */
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0xfa, 0xce, 0xde, 0xad,
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/* u64 */
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0xfe, 0xed, 0xac, 0x1d, 0x1f, 0x1c, 0xbe, 0xef,
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/* string */
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0x00, 0x00, 0x00, 0x09,
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'O', ' ', 'G', 'o', 'r', 'g', 'o', 'n', '!',
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/* bignum1 */
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0x79,
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
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0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
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/* bignum2 */
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0x00, 0x00, 0x00, 0x14,
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0x00,
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0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
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0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
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0x7f, 0xff, 0x11,
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/* EC point (NIST-256 curve) */
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0x00, 0x00, 0x00, 0x41,
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0x04,
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0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06,
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0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57,
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0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86,
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0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99,
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0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b,
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0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2,
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0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
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0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4,
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};
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struct fuzz *fuzz;
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TEST_START("fuzz blob parsing");
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fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | FUZZ_2_BIT_FLIP |
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FUZZ_1_BYTE_FLIP | FUZZ_2_BYTE_FLIP |
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FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END, blob, sizeof(blob));
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TEST_ONERROR(onerror, fuzz);
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for(; !fuzz_done(fuzz); fuzz_next(fuzz))
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attempt_parse_blob(blob, sizeof(blob));
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fuzz_cleanup(fuzz);
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TEST_DONE();
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TEST_ONERROR(NULL, NULL);
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}
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