crypto/srp/srp_lib.c:202: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_exp`.
Showing all 38 steps of the trace


crypto/srp/srp_lib.c:174:1: Parameter `N->top`
172.   }
173.   
174. > BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
175.                               const BIGNUM *x, const BIGNUM *a, const BIGNUM *u)
176.   {

crypto/srp/srp_lib.c:189:10: Call
187.           goto err;
188.   
189.       if (!BN_mod_exp(tmp, g, x, N, bn_ctx))
                ^
190.           goto err;
191.       if ((k = srp_Calc_k(N, g)) == NULL)

crypto/bn/bn_exp.c:89:1: Parameter `m->top`
  87.   }
  88.   
  89. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  90.                  BN_CTX *ctx)
  91.   {

crypto/bn/bn_exp.c:134:9: Call
  132.   
  133.   #ifdef MONT_MUL_MOD
  134.       if (BN_is_odd(m)) {
                 ^
  135.   # ifdef MONT_EXP_WORD
  136.           if (a->top == 1 && !a->neg

crypto/bn/bn_lib.c:861:1: Parameter `a->top`
    859.   }
    860.   
    861. > int BN_is_odd(const BIGNUM *a)
    862.   {
    863.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:141:19: Call
  139.               && (BN_get_flags(m, BN_FLG_CONSTTIME) == 0)) {
  140.               BN_ULONG A = a->d[0];
  141.               ret = BN_mod_exp_mont_word(r, A, p, m, ctx, NULL);
                           ^
  142.           } else
  143.   # endif

crypto/bn/bn_exp.c:1127:1: Parameter `m->top`
    1125.   }
    1126.   
    1127. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1128.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1129.   {

crypto/srp/srp_lib.c:191:14: Call
189.       if (!BN_mod_exp(tmp, g, x, N, bn_ctx))
190.           goto err;
191.       if ((k = srp_Calc_k(N, g)) == NULL)
                    ^
192.           goto err;
193.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))

crypto/srp/srp_lib.c:45:1: Parameter `N->top`
  43.   }
  44.   
  45. > static BIGNUM *srp_Calc_k(const BIGNUM *N, const BIGNUM *g)
  46.   {
  47.       /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */

crypto/srp/srp_lib.c:48:12: Call
  46.   {
  47.       /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */
  48.       return srp_Calc_xy(N, g, N);
                   ^
  49.   }
  50.   

crypto/srp/srp_lib.c:23:1: Parameter `N->top`
    21.   /* calculate = SHA1(PAD(x) || PAD(y)) */
    22.   
    23. > static BIGNUM *srp_Calc_xy(const BIGNUM *x, const BIGNUM *y, const BIGNUM *N)
    24.   {
    25.       unsigned char digest[SHA_DIGEST_LENGTH];

crypto/srp/srp_lib.c:27:16: Call
    25.       unsigned char digest[SHA_DIGEST_LENGTH];
    26.       unsigned char *tmp = NULL;
    27.       int numN = BN_num_bytes(N);
                         ^
    28.       BIGNUM *res = NULL;
    29.       if (x != N && BN_ucmp(x, N) >= 0)

crypto/bn/bn_lib.c:139:9: Call
      137.       bn_check_top(a);
      138.   
      139.       if (BN_is_zero(a))
                     ^
      140.           return 0;
      141.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));

crypto/bn/bn_lib.c:846:1: Parameter `a->top`
        844.   }
        845.   
        846. > int BN_is_zero(const BIGNUM *a)
        847.   {
        848.       return a->top == 0;

crypto/srp/srp_lib.c:193:10: Call
191.       if ((k = srp_Calc_k(N, g)) == NULL)
192.           goto err;
193.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))
                ^
194.           goto err;
195.       if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx))

crypto/bn/bn_mod.c:73:1: Parameter `m->top`
  71.   
  72.   /* slow but works */
  73. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  74.                  BN_CTX *ctx)
  75.   {

crypto/srp/srp_lib.c:195:10: Call
193.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))
194.           goto err;
195.       if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx))
                ^
196.           goto err;
197.       if (!BN_mul(tmp3, u, x, bn_ctx))

crypto/bn/bn_mod.c:50:1: Parameter `m->top`
  48.   }
  49.   
  50. > int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  51.                  BN_CTX *ctx)
  52.   {

crypto/srp/srp_lib.c:202:23: Call
200.           goto err;
201.       K = BN_new();
202.       if (K != NULL && !BN_mod_exp(K, tmp, tmp2, N, bn_ctx)) {
                             ^
203.           BN_free(K);
204.           K = NULL;

crypto/bn/bn_exp.c:89:1: Parameter `m->top`
  87.   }
  88.   
  89. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  90.                  BN_CTX *ctx)
  91.   {

crypto/bn/bn_exp.c:134:9: Call
  132.   
  133.   #ifdef MONT_MUL_MOD
  134.       if (BN_is_odd(m)) {
                 ^
  135.   # ifdef MONT_EXP_WORD
  136.           if (a->top == 1 && !a->neg

crypto/bn/bn_lib.c:861:1: Parameter `a->top`
    859.   }
    860.   
    861. > int BN_is_odd(const BIGNUM *a)
    862.   {
    863.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:141:19: Call
  139.               && (BN_get_flags(m, BN_FLG_CONSTTIME) == 0)) {
  140.               BN_ULONG A = a->d[0];
  141.               ret = BN_mod_exp_mont_word(r, A, p, m, ctx, NULL);
                           ^
  142.           } else
  143.   # endif

crypto/bn/bn_exp.c:1127:1: Parameter `m->top`
    1125.   }
    1126.   
    1127. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1128.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1129.   {

crypto/bn/bn_exp.c:1163:10: Call
    1161.       bn_check_top(m);
    1162.   
    1163.       if (!BN_is_odd(m)) {
                     ^
    1164.           BNerr(BN_F_BN_MOD_EXP_MONT_WORD, BN_R_CALLED_WITH_EVEN_MODULUS);
    1165.           return 0;

crypto/bn/bn_lib.c:861:1: Parameter `a->top`
      859.   }
      860.   
      861. > int BN_is_odd(const BIGNUM *a)
      862.   {
      863.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:1198:14: Call
    1196.           if ((mont = BN_MONT_CTX_new()) == NULL)
    1197.               goto err;
    1198.           if (!BN_MONT_CTX_set(mont, m, ctx))
                         ^
    1199.               goto err;
    1200.       }

crypto/bn/bn_mont.c:233:1: Parameter `mod->top`
      231.   }
      232.   
      233. > int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx)
      234.   {
      235.       int ret = 0;

crypto/bn/bn_mont.c:238:9: Call
      236.       BIGNUM *Ri, *R;
      237.   
      238.       if (BN_is_zero(mod))
                     ^
      239.           return 0;
      240.   

crypto/bn/bn_lib.c:846:1: Parameter `a->top`
        844.   }
        845.   
        846. > int BN_is_zero(const BIGNUM *a)
        847.   {
        848.       return a->top == 0;

crypto/bn/bn_mont.c:245:10: Call
      243.           goto err;
      244.       R = &(mont->RR);            /* grab RR as a temp */
      245.       if (!BN_copy(&(mont->N), mod))
                      ^
      246.           goto err;               /* Set N */
      247.       if (BN_get_flags(mod, BN_FLG_CONSTTIME) != 0)

crypto/bn/bn_lib.c:280:1: <Offset trace>
278.   }
279.   
280. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
281.   {
282.       bn_check_top(b);

crypto/bn/bn_lib.c:280:1: Parameter `b->top`
        278.   }
        279.   
        280. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
        281.   {
        282.       bn_check_top(b);

crypto/bn/bn_lib.c:280:1: <Length trace>
278.   }
279.   
280. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
281.   {
282.       bn_check_top(b);

crypto/bn/bn_lib.c:280:1: Parameter `*a->d`
        278.   }
        279.   
        280. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
        281.   {
        282.       bn_check_top(b);

crypto/bn/bn_lib.c:286:9: Call
        284.       if (a == b)
        285.           return a;
        286.       if (bn_wexpand(a, b->top) == NULL)
                       ^
        287.           return NULL;
        288.   

crypto/bn/bn_lib.c:942:1: Parameter `*a->d`
          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:290:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_exp` 
        288.   
        289.       if (b->top > 0)
        290.           memcpy(a->d, b->d, sizeof(b->d[0]) * b->top);
                       ^
        291.   
        292.       a->neg = b->neg;
