crypto/rsa/rsa_sp800_56b_check.c:375: error: BUFFER_OVERRUN_L3
  Offset: [-1, +oo] Size: [1, +oo] by call to `rsa_check_private_exponent`.
Showing all 39 steps of the trace


crypto/rsa/rsa_sp800_56b_check.c:360:5: Call
358.           return 0;
359.   
360.       BN_CTX_start(ctx);
           ^
361.       r = BN_CTX_get(ctx);
362.       if (r == NULL || !BN_mul(r, rsa->p, rsa->q, ctx))

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
  169.   }
  170.   
  171. > void BN_CTX_start(BN_CTX *ctx)
  172.   {
  173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/rsa/rsa_sp800_56b_check.c:375:14: Call
373.             && (rsa_check_pminusq_diff(r, rsa->p, rsa->q, nbits) > 0)
374.             /* (Step 6): Check the private exponent d */
375.             && rsa_check_private_exponent(rsa, nbits, ctx)
                    ^
376.             /* 6.4.1.2.3 (Step 7): Check the CRT components */
377.             && rsa_check_crt_components(rsa, ctx);

crypto/rsa/rsa_sp800_56b_check.c:157:1: Parameter `ctx->stack.depth`
  155.    *     (Step 6b) 1 = (d*e) mod LCM(p–1, q–1)
  156.    */
  157. > int rsa_check_private_exponent(const RSA *rsa, int nbits, BN_CTX *ctx)
  158.   {
  159.       int ret;

crypto/rsa/rsa_sp800_56b_check.c:166:5: Call
  164.           return 0;
  165.   
  166.       BN_CTX_start(ctx);
             ^
  167.       r = BN_CTX_get(ctx);
  168.       p1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
    169.   }
    170.   
    171. > void BN_CTX_start(BN_CTX *ctx)
    172.   {
    173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/rsa/rsa_sp800_56b_check.c:167:9: Call
  165.   
  166.       BN_CTX_start(ctx);
  167.       r = BN_CTX_get(ctx);
                 ^
  168.       p1 = BN_CTX_get(ctx);
  169.       q1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:168:10: Call
  166.       BN_CTX_start(ctx);
  167.       r = BN_CTX_get(ctx);
  168.       p1 = BN_CTX_get(ctx);
                  ^
  169.       q1 = BN_CTX_get(ctx);
  170.       lcm = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:169:10: Call
  167.       r = BN_CTX_get(ctx);
  168.       p1 = BN_CTX_get(ctx);
  169.       q1 = BN_CTX_get(ctx);
                  ^
  170.       lcm = BN_CTX_get(ctx);
  171.       p1q1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:170:11: Call
  168.       p1 = BN_CTX_get(ctx);
  169.       q1 = BN_CTX_get(ctx);
  170.       lcm = BN_CTX_get(ctx);
                   ^
  171.       p1q1 = BN_CTX_get(ctx);
  172.       gcd = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:171:12: Call
  169.       q1 = BN_CTX_get(ctx);
  170.       lcm = BN_CTX_get(ctx);
  171.       p1q1 = BN_CTX_get(ctx);
                    ^
  172.       gcd = BN_CTX_get(ctx);
  173.       ret = (gcd != NULL

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:172:11: Call
  170.       lcm = BN_CTX_get(ctx);
  171.       p1q1 = BN_CTX_get(ctx);
  172.       gcd = BN_CTX_get(ctx);
                   ^
  173.       ret = (gcd != NULL
  174.             /* LCM(p - 1, q - 1) */

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/rsa/rsa_sp800_56b_check.c:175:15: Call
  173.       ret = (gcd != NULL
  174.             /* LCM(p - 1, q - 1) */
  175.             && (rsa_get_lcm(ctx, rsa->p, rsa->q, lcm, gcd, p1, q1, p1q1) == 1)
                       ^
  176.             /* (Step 6a) d < LCM(p - 1, q - 1) */
  177.             && (BN_cmp(rsa->d, lcm) < 0)

crypto/rsa/rsa_sp800_56b_check.c:220:1: Parameter `ctx->stack.depth`
    218.   
    219.   /* return LCM(p-1, q-1) */
    220. > int rsa_get_lcm(BN_CTX *ctx, const BIGNUM *p, const BIGNUM *q,
    221.                   BIGNUM *lcm, BIGNUM *gcd, BIGNUM *p1, BIGNUM *q1,
    222.                   BIGNUM *p1q1)

crypto/rsa/rsa_sp800_56b_check.c:179:14: Call
  177.             && (BN_cmp(rsa->d, lcm) < 0)
  178.             /* (Step 6b) 1 = (e . d) mod LCM(p - 1, q - 1) */
  179.             && BN_mod_mul(r, rsa->e, rsa->d, lcm, ctx)
                      ^
  180.             && BN_is_one(r));
  181.   

crypto/bn/bn_mod.c:193:1: Parameter `ctx->stack.depth`
    191.   
    192.   /* slow but works */
    193. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
    194.                  BN_CTX *ctx)
    195.   {

crypto/bn/bn_mod.c:203:5: Call
    201.       bn_check_top(m);
    202.   
    203.       BN_CTX_start(ctx);
               ^
    204.       if ((t = BN_CTX_get(ctx)) == NULL)
    205.           goto err;

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
      169.   }
      170.   
      171. > void BN_CTX_start(BN_CTX *ctx)
      172.   {
      173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/bn/bn_mod.c:204:14: Call
    202.   
    203.       BN_CTX_start(ctx);
    204.       if ((t = BN_CTX_get(ctx)) == NULL)
                        ^
    205.           goto err;
    206.       if (a == b) {

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
      200.   }
      201.   
      202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
      203.   {
      204.       BIGNUM *ret;

crypto/bn/bn_mod.c:207:14: Call
    205.           goto err;
    206.       if (a == b) {
    207.           if (!BN_sqr(t, a, ctx))
                        ^
    208.               goto err;
    209.       } else {

crypto/bn/bn_sqr.c:17:1: Parameter `ctx->stack.depth`
      15.    * I've just gone over this and it is now %20 faster on x86 - eay - 27 Jun 96
      16.    */
      17. > int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
      18.   {
      19.       int ret = bn_sqr_fixed_top(r, a, ctx);

crypto/bn/bn_sqr.c:19:15: Call
      17.   int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
      18.   {
      19.       int ret = bn_sqr_fixed_top(r, a, ctx);
                          ^
      20.   
      21.       bn_correct_top(r);

crypto/bn/bn_sqr.c:42:5: Call
        40.       }
        41.   
        42.       BN_CTX_start(ctx);
                  ^
        43.       rr = (a != r) ? r : BN_CTX_get(ctx);
        44.       tmp = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:171:1: Parameter `*ctx->stack.indexes`
          169.   }
          170.   
          171. > void BN_CTX_start(BN_CTX *ctx)
          172.   {
          173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/bn/bn_sqr.c:104:5: Call
        102.       bn_check_top(rr);
        103.       bn_check_top(tmp);
        104.       BN_CTX_end(ctx);
                   ^
        105.       return ret;
        106.   }

crypto/bn/bn_ctx.c:185:1: Parameter `*ctx->stack.indexes`
          183.   }
          184.   
          185. > void BN_CTX_end(BN_CTX *ctx)
          186.   {
          187.       CTXDBG("ENTER BN_CTX_end()", ctx);

crypto/bn/bn_ctx.c:191:27: Call
          189.           ctx->err_stack--;
          190.       else {
          191.           unsigned int fp = BN_STACK_pop(&ctx->stack);
                                           ^
          192.           /* Does this stack frame have anything to release? */
          193.           if (fp < ctx->used)

crypto/bn/bn_ctx.c:266:1: <Offset trace>
264.   }
265.   
266. > static unsigned int BN_STACK_pop(BN_STACK *st)
267.   {
268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:266:1: Parameter `st->depth`
            264.   }
            265.   
            266. > static unsigned int BN_STACK_pop(BN_STACK *st)
            267.   {
            268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:266:1: <Length trace>
264.   }
265.   
266. > static unsigned int BN_STACK_pop(BN_STACK *st)
267.   {
268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:266:1: Parameter `*st->indexes`
            264.   }
            265.   
            266. > static unsigned int BN_STACK_pop(BN_STACK *st)
            267.   {
            268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:268:12: Array access: Offset: [-1, +oo] Size: [1, +oo] by call to `rsa_check_private_exponent` 
            266.   static unsigned int BN_STACK_pop(BN_STACK *st)
            267.   {
            268.       return st->indexes[--(st->depth)];
                              ^
            269.   }
            270.   

static unsigned int BN_STACK_pop(BN_STACK *st)
{
    return st->indexes[--(st->depth)];
}
['int rsa_sp800_56b_check_keypair(const RSA *rsa, const BIGNUM *efixed,\n                                int strength, int nbits)\n{\n    int ret = 0;\n    BN_CTX *ctx = NULL;\n    BIGNUM *r = NULL;\n    if (rsa->p == NULL\n            || rsa->q == NULL\n            || rsa->e == NULL\n            || rsa->d == NULL\n            || rsa->n == NULL) {\n        RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR, RSA_R_INVALID_REQUEST);\n        return 0;\n    }\n    if (!rsa_sp800_56b_validate_strength(nbits, strength))\n        return 0;\n    if (efixed != NULL) {\n        if (BN_cmp(efixed, rsa->e) != 0) {\n            RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR, RSA_R_INVALID_REQUEST);\n            return 0;\n        }\n    }\n    if (!rsa_check_public_exponent(rsa->e)) {\n        RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR,\n               RSA_R_PUB_EXPONENT_OUT_OF_RANGE);\n        return 0;\n    }\n    if (nbits != BN_num_bits(rsa->n)) {\n        RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR, RSA_R_INVALID_KEYPAIR);\n        return 0;\n    }\n    ctx = BN_CTX_new();\n    if (ctx == NULL)\n        return 0;\n    BN_CTX_start(ctx);\n    r = BN_CTX_get(ctx);\n    if (r == NULL || !BN_mul(r, rsa->p, rsa->q, ctx))\n        goto err;\n    if (BN_cmp(rsa->n, r) != 0) {\n        RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR, RSA_R_INVALID_REQUEST);\n        goto err;\n    }\n    ret = rsa_check_prime_factor(rsa->p, rsa->e, nbits, ctx)\n          && rsa_check_prime_factor(rsa->q, rsa->e, nbits, ctx)\n          && (rsa_check_pminusq_diff(r, rsa->p, rsa->q, nbits) > 0)\n          && rsa_check_private_exponent(rsa, nbits, ctx)\n          && rsa_check_crt_components(rsa, ctx);\n    if (ret != 1)\n        RSAerr(RSA_F_RSA_SP800_56B_CHECK_KEYPAIR, RSA_R_INVALID_KEYPAIR);\nerr:\n    BN_clear(r);\n    BN_CTX_end(ctx);\n    BN_CTX_free(ctx);\n    return ret;\n}', 'void BN_CTX_start(BN_CTX *ctx)\n{\n    CTXDBG("ENTER BN_CTX_start()", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        ctx->err_stack++;\n    else if (!BN_STACK_push(&ctx->stack, ctx->used)) {\n        BNerr(BN_F_BN_CTX_START, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        ctx->err_stack++;\n    }\n    CTXDBG("LEAVE BN_CTX_start()", ctx);\n}', 'int rsa_check_private_exponent(const RSA *rsa, int nbits, BN_CTX *ctx)\n{\n    int ret;\n    BIGNUM *r, *p1, *q1, *lcm, *p1q1, *gcd;\n    if (BN_num_bits(rsa->d) <= (nbits >> 1))\n        return 0;\n    BN_CTX_start(ctx);\n    r = BN_CTX_get(ctx);\n    p1 = BN_CTX_get(ctx);\n    q1 = BN_CTX_get(ctx);\n    lcm = BN_CTX_get(ctx);\n    p1q1 = BN_CTX_get(ctx);\n    gcd = BN_CTX_get(ctx);\n    ret = (gcd != NULL\n          && (rsa_get_lcm(ctx, rsa->p, rsa->q, lcm, gcd, p1, q1, p1q1) == 1)\n          && (BN_cmp(rsa->d, lcm) < 0)\n          && BN_mod_mul(r, rsa->e, rsa->d, lcm, ctx)\n          && BN_is_one(r));\n    BN_clear(p1);\n    BN_clear(q1);\n    BN_clear(lcm);\n    BN_clear(gcd);\n    BN_CTX_end(ctx);\n    return ret;\n}', 'BIGNUM *BN_CTX_get(BN_CTX *ctx)\n{\n    BIGNUM *ret;\n    CTXDBG("ENTER BN_CTX_get()", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        return NULL;\n    if ((ret = BN_POOL_get(&ctx->pool, ctx->flags)) == NULL) {\n        ctx->too_many = 1;\n        BNerr(BN_F_BN_CTX_GET, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        return NULL;\n    }\n    BN_zero(ret);\n    ret->flags &= (~BN_FLG_CONSTTIME);\n    ctx->used++;\n    CTXDBG("LEAVE BN_CTX_get()", ctx);\n    return ret;\n}', 'int rsa_get_lcm(BN_CTX *ctx, const BIGNUM *p, const BIGNUM *q,\n                BIGNUM *lcm, BIGNUM *gcd, BIGNUM *p1, BIGNUM *q1,\n                BIGNUM *p1q1)\n{\n    return BN_sub(p1, p, BN_value_one())\n           && BN_sub(q1, q, BN_value_one())\n           && BN_mul(p1q1, p1, q1, ctx)\n           && BN_gcd(gcd, p1, q1, ctx)\n           && BN_div(lcm, NULL, p1q1, gcd, ctx);\n}', 'int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,\n               BN_CTX *ctx)\n{\n    BIGNUM *t;\n    int ret = 0;\n    bn_check_top(a);\n    bn_check_top(b);\n    bn_check_top(m);\n    BN_CTX_start(ctx);\n    if ((t = BN_CTX_get(ctx)) == NULL)\n        goto err;\n    if (a == b) {\n        if (!BN_sqr(t, a, ctx))\n            goto err;\n    } else {\n        if (!BN_mul(t, a, b, ctx))\n            goto err;\n    }\n    if (!BN_nnmod(r, t, m, ctx))\n        goto err;\n    bn_check_top(r);\n    ret = 1;\n err:\n    BN_CTX_end(ctx);\n    return ret;\n}', 'int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)\n{\n    int ret = bn_sqr_fixed_top(r, a, ctx);\n    bn_correct_top(r);\n    bn_check_top(r);\n    return ret;\n}', 'int bn_sqr_fixed_top(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)\n{\n    int max, al;\n    int ret = 0;\n    BIGNUM *tmp, *rr;\n    bn_check_top(a);\n    al = a->top;\n    if (al <= 0) {\n        r->top = 0;\n        r->neg = 0;\n        return 1;\n    }\n    BN_CTX_start(ctx);\n    rr = (a != r) ? r : BN_CTX_get(ctx);\n    tmp = BN_CTX_get(ctx);\n    if (rr == NULL || tmp == NULL)\n        goto err;\n    max = 2 * al;\n    if (bn_wexpand(rr, max) == NULL)\n        goto err;\n    if (al == 4) {\n#ifndef BN_SQR_COMBA\n        BN_ULONG t[8];\n        bn_sqr_normal(rr->d, a->d, 4, t);\n#else\n        bn_sqr_comba4(rr->d, a->d);\n#endif\n    } else if (al == 8) {\n#ifndef BN_SQR_COMBA\n        BN_ULONG t[16];\n        bn_sqr_normal(rr->d, a->d, 8, t);\n#else\n        bn_sqr_comba8(rr->d, a->d);\n#endif\n    } else {\n#if defined(BN_RECURSION)\n        if (al < BN_SQR_RECURSIVE_SIZE_NORMAL) {\n            BN_ULONG t[BN_SQR_RECURSIVE_SIZE_NORMAL * 2];\n            bn_sqr_normal(rr->d, a->d, al, t);\n        } else {\n            int j, k;\n            j = BN_num_bits_word((BN_ULONG)al);\n            j = 1 << (j - 1);\n            k = j + j;\n            if (al == j) {\n                if (bn_wexpand(tmp, k * 2) == NULL)\n                    goto err;\n                bn_sqr_recursive(rr->d, a->d, al, tmp->d);\n            } else {\n                if (bn_wexpand(tmp, max) == NULL)\n                    goto err;\n                bn_sqr_normal(rr->d, a->d, al, tmp->d);\n            }\n        }\n#else\n        if (bn_wexpand(tmp, max) == NULL)\n            goto err;\n        bn_sqr_normal(rr->d, a->d, al, tmp->d);\n#endif\n    }\n    rr->neg = 0;\n    rr->top = max;\n    rr->flags |= BN_FLG_FIXED_TOP;\n    if (r != rr && BN_copy(r, rr) == NULL)\n        goto err;\n    ret = 1;\n err:\n    bn_check_top(rr);\n    bn_check_top(tmp);\n    BN_CTX_end(ctx);\n    return ret;\n}', 'void BN_CTX_end(BN_CTX *ctx)\n{\n    CTXDBG("ENTER BN_CTX_end()", ctx);\n    if (ctx->err_stack)\n        ctx->err_stack--;\n    else {\n        unsigned int fp = BN_STACK_pop(&ctx->stack);\n        if (fp < ctx->used)\n            BN_POOL_release(&ctx->pool, ctx->used - fp);\n        ctx->used = fp;\n        ctx->too_many = 0;\n    }\n    CTXDBG("LEAVE BN_CTX_end()", ctx);\n}', 'static unsigned int BN_STACK_pop(BN_STACK *st)\n{\n    return st->indexes[--(st->depth)];\n}']