crypto/ec/ecdsa_ossl.c:83: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_set_bit`.
Showing all 19 steps of the trace


crypto/ec/ecdsa_ossl.c:83:10: Call
81.       /* Preallocate space */
82.       order_bits = BN_num_bits(order);
83.       if (!BN_set_bit(k, order_bits)
               ^
84.           || !BN_set_bit(r, order_bits)
85.           || !BN_set_bit(X, order_bits))

crypto/bn/bn_lib.c:588:1: Parameter `a->top`
  586.   }
  587.   
  588. > int BN_set_bit(BIGNUM *a, int n)
  589.   {
  590.       int i, j, k;

crypto/bn/bn_lib.c:598:13: Call
  596.       j = n % BN_BITS2;
  597.       if (a->top <= i) {
  598.           if (bn_wexpand(a, i + 1) == NULL)
                     ^
  599.               return 0;
  600.           for (k = a->top; k < i + 1; k++)

crypto/bn/bn_lib.c:942:1: Parameter `a->top`
    940.   }
    941.   
    942. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
    943.   {
    944.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:944:37: Call
    942.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
    943.   {
    944.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                               ^
    945.   }
    946.   

crypto/bn/bn_lib.c:244:1: Parameter `b->top`
      242.    */
      243.   
      244. > BIGNUM *bn_expand2(BIGNUM *b, int words)
      245.   {
      246.       if (words > b->dmax) {

crypto/bn/bn_lib.c:247:23: Call
      245.   {
      246.       if (words > b->dmax) {
      247.           BN_ULONG *a = bn_expand_internal(b, words);
                                   ^
      248.           if (!a)
      249.               return NULL;

crypto/bn/bn_lib.c:208:1: <Offset trace>
206.   /* This is used by bn_expand2() */
207.   /* The caller MUST check that words > b->dmax before calling this */
208. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
209.   {
210.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:208:1: Parameter `b->top`
        206.   /* This is used by bn_expand2() */
        207.   /* The caller MUST check that words > b->dmax before calling this */
        208. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
        209.   {
        210.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:208:1: <Length trace>
206.   /* This is used by bn_expand2() */
207.   /* The caller MUST check that words > b->dmax before calling this */
208. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
209.   {
210.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:208:1: Parameter `words`
        206.   /* This is used by bn_expand2() */
        207.   /* The caller MUST check that words > b->dmax before calling this */
        208. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
        209.   {
        210.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:223:13: Call
        221.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        222.       else
        223.           a = OPENSSL_zalloc(words * sizeof(*a));
                           ^
        224.       if (a == NULL) {
        225.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:228:1: Parameter `num`
          226.   }
          227.   
          228. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:230:17: Call
          228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);
                                 ^
          231.   
          232.       FAILTEST();

crypto/mem.c:201:9: Assignment
            199.   
            200.       if (num == 0)
            201.           return NULL;
                           ^
            202.   
            203.       FAILTEST();

crypto/mem.c:230:5: Assignment
          228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);
                     ^
          231.   
          232.       FAILTEST();

crypto/mem.c:235:5: Assignment
          233.       if (ret != NULL)
          234.           memset(ret, 0, num);
          235.       return ret;
                     ^
          236.   }
          237.   

crypto/bn/bn_lib.c:223:9: Assignment
        221.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        222.       else
        223.           a = OPENSSL_zalloc(words * sizeof(*a));
                       ^
        224.       if (a == NULL) {
        225.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:231:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_set_bit` 
        229.       assert(b->top <= words);
        230.       if (b->top > 0)
        231.           memcpy(a, b->d, sizeof(*a) * b->top);
                       ^
        232.   
        233.       return a;

static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
{
    BN_ULONG *a = NULL;
    if (words > (INT_MAX / (4 * BN_BITS2))) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_SECURE))
        a = OPENSSL_secure_zalloc(words * sizeof(*a));
    else
        a = OPENSSL_zalloc(words * sizeof(*a));
    if (a == NULL) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    assert(b->top <= words);
    if (b->top > 0)
        memcpy(a, b->d, sizeof(*a) * b->top);
    return a;
}
['static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in,\n                            BIGNUM **kinvp, BIGNUM **rp,\n                            const unsigned char *dgst, int dlen)\n{\n    BN_CTX *ctx = NULL;\n    BIGNUM *k = NULL, *r = NULL, *X = NULL;\n    const BIGNUM *order;\n    EC_POINT *tmp_point = NULL;\n    const EC_GROUP *group;\n    int ret = 0;\n    int order_bits;\n    if (eckey == NULL || (group = EC_KEY_get0_group(eckey)) == NULL) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_PASSED_NULL_PARAMETER);\n        return 0;\n    }\n    if (!EC_KEY_can_sign(eckey)) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING);\n        return 0;\n    }\n    if (ctx_in == NULL) {\n        if ((ctx = BN_CTX_new()) == NULL) {\n            ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_MALLOC_FAILURE);\n            return 0;\n        }\n    } else\n        ctx = ctx_in;\n    k = BN_new();\n    r = BN_new();\n    X = BN_new();\n    if (k == NULL || r == NULL || X == NULL) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_MALLOC_FAILURE);\n        goto err;\n    }\n    if ((tmp_point = EC_POINT_new(group)) == NULL) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_EC_LIB);\n        goto err;\n    }\n    order = EC_GROUP_get0_order(group);\n    if (order == NULL) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_EC_LIB);\n        goto err;\n    }\n    order_bits = BN_num_bits(order);\n    if (!BN_set_bit(k, order_bits)\n        || !BN_set_bit(r, order_bits)\n        || !BN_set_bit(X, order_bits))\n        goto err;\n    do {\n        do\n            if (dgst != NULL) {\n                if (!BN_generate_dsa_nonce\n                    (k, order, EC_KEY_get0_private_key(eckey), dgst, dlen,\n                     ctx)) {\n                    ECerr(EC_F_ECDSA_SIGN_SETUP,\n                             EC_R_RANDOM_NUMBER_GENERATION_FAILED);\n                    goto err;\n                }\n            } else {\n                if (!BN_priv_rand_range(k, order)) {\n                    ECerr(EC_F_ECDSA_SIGN_SETUP,\n                             EC_R_RANDOM_NUMBER_GENERATION_FAILED);\n                    goto err;\n                }\n            }\n        while (BN_is_zero(k));\n        if (!EC_POINT_mul(group, tmp_point, k, NULL, NULL, ctx)) {\n            ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_EC_LIB);\n            goto err;\n        }\n        if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) ==\n            NID_X9_62_prime_field) {\n            if (!EC_POINT_get_affine_coordinates_GFp\n                (group, tmp_point, X, NULL, ctx)) {\n                ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_EC_LIB);\n                goto err;\n            }\n        }\n#ifndef OPENSSL_NO_EC2M\n        else {\n            if (!EC_POINT_get_affine_coordinates_GF2m(group,\n                                                      tmp_point, X, NULL,\n                                                      ctx)) {\n                ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_EC_LIB);\n                goto err;\n            }\n        }\n#endif\n        if (!BN_nnmod(r, X, order, ctx)) {\n            ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_BN_LIB);\n            goto err;\n        }\n    }\n    while (BN_is_zero(r));\n    if (!ec_group_do_inverse_ord(group, k, k, ctx)) {\n        ECerr(EC_F_ECDSA_SIGN_SETUP, ERR_R_BN_LIB);\n        goto err;\n    }\n    BN_clear_free(*rp);\n    BN_clear_free(*kinvp);\n    *rp = r;\n    *kinvp = k;\n    ret = 1;\n err:\n    if (!ret) {\n        BN_clear_free(k);\n        BN_clear_free(r);\n    }\n    if (ctx != ctx_in)\n        BN_CTX_free(ctx);\n    EC_POINT_free(tmp_point);\n    BN_clear_free(X);\n    return ret;\n}', 'int BN_set_bit(BIGNUM *a, int n)\n{\n    int i, j, k;\n    if (n < 0)\n        return 0;\n    i = n / BN_BITS2;\n    j = n % BN_BITS2;\n    if (a->top <= i) {\n        if (bn_wexpand(a, i + 1) == NULL)\n            return 0;\n        for (k = a->top; k < i + 1; k++)\n            a->d[k] = 0;\n        a->top = i + 1;\n        a->flags &= ~BN_FLG_FIXED_TOP;\n    }\n    a->d[i] |= (((BN_ULONG)1) << j);\n    bn_check_top(a);\n    return 1;\n}', 'BIGNUM *bn_wexpand(BIGNUM *a, int words)\n{\n    return (words <= a->dmax) ? a : bn_expand2(a, words);\n}', 'BIGNUM *bn_expand2(BIGNUM *b, int words)\n{\n    if (words > b->dmax) {\n        BN_ULONG *a = bn_expand_internal(b, words);\n        if (!a)\n            return NULL;\n        if (b->d) {\n            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));\n            bn_free_d(b);\n        }\n        b->d = a;\n        b->dmax = words;\n    }\n    return b;\n}', 'static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)\n{\n    BN_ULONG *a = NULL;\n    if (words > (INT_MAX / (4 * BN_BITS2))) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_SECURE))\n        a = OPENSSL_secure_zalloc(words * sizeof(*a));\n    else\n        a = OPENSSL_zalloc(words * sizeof(*a));\n    if (a == NULL) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);\n        return NULL;\n    }\n    assert(b->top <= words);\n    if (b->top > 0)\n        memcpy(a, b->d, sizeof(*a) * b->top);\n    return a;\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    INCREMENT(malloc_count);\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    if (allow_customize) {\n        allow_customize = 0;\n    }\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    (void)(file); (void)(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']