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:868:1: Parameter `a->top`
    866.   }
    867.   
    868. > int BN_is_odd(const BIGNUM *a)
    869.   {
    870.       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:1132:1: Parameter `m->top`
    1130.   }
    1131.   
    1132. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1133.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1134.   {

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

crypto/bn/bn_lib.c:853:1: Parameter `a->top`
        851.   }
        852.   
        853. > int BN_is_zero(const BIGNUM *a)
        854.   {
        855.       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:868:1: Parameter `a->top`
    866.   }
    867.   
    868. > int BN_is_odd(const BIGNUM *a)
    869.   {
    870.       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:1132:1: Parameter `m->top`
    1130.   }
    1131.   
    1132. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1133.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1134.   {

crypto/bn/bn_exp.c:1168:10: Call
    1166.       bn_check_top(m);
    1167.   
    1168.       if (!BN_is_odd(m)) {
                     ^
    1169.           BNerr(BN_F_BN_MOD_EXP_MONT_WORD, BN_R_CALLED_WITH_EVEN_MODULUS);
    1170.           return 0;

crypto/bn/bn_lib.c:868:1: Parameter `a->top`
      866.   }
      867.   
      868. > int BN_is_odd(const BIGNUM *a)
      869.   {
      870.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:1203:14: Call
    1201.           if ((mont = BN_MONT_CTX_new()) == NULL)
    1202.               goto err;
    1203.           if (!BN_MONT_CTX_set(mont, m, ctx))
                         ^
    1204.               goto err;
    1205.       }

crypto/bn/bn_mont.c:251:1: Parameter `mod->top`
      249.   }
      250.   
      251. > int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx)
      252.   {
      253.       int i, ret = 0;

crypto/bn/bn_mont.c:256:9: Call
      254.       BIGNUM *Ri, *R;
      255.   
      256.       if (BN_is_zero(mod))
                     ^
      257.           return 0;
      258.   

crypto/bn/bn_lib.c:853:1: Parameter `a->top`
        851.   }
        852.   
        853. > int BN_is_zero(const BIGNUM *a)
        854.   {
        855.       return a->top == 0;

crypto/bn/bn_mont.c:263:10: Call
      261.           goto err;
      262.       R = &(mont->RR);            /* grab RR as a temp */
      263.       if (!BN_copy(&(mont->N), mod))
                      ^
      264.           goto err;               /* Set N */
      265.       if (BN_get_flags(mod, BN_FLG_CONSTTIME) != 0)

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

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

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

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

crypto/bn/bn_lib.c:287:9: Call
        285.       if (a == b)
        286.           return a;
        287.       if (bn_wexpand(a, b->top) == NULL)
                       ^
        288.           return NULL;
        289.   

crypto/bn/bn_lib.c:949:1: Parameter `*a->d`
          947.   }
          948.   
          949. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
          950.   {
          951.       return (words <= a->dmax) ? a : bn_expand2(a, words);

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