crypto/rand/drbg_lib.c:579: error: BUFFER_OVERRUN_L3
  Offset added: [0, 15] Size: [0, +oo] by call to `RAND_DRBG_generate`.
Showing all 10 steps of the trace


crypto/rand/drbg_lib.c:562:1: Parameter `count`
560.   
561.   /* Implements the default OpenSSL RAND_bytes() method */
562. > static int drbg_bytes(unsigned char *out, int count)
563.   {
564.       int ret = 0;

crypto/rand/drbg_lib.c:576:9: Assignment
574.   
575.       for ( ; count > 0; count -= chunk, out += chunk) {
576.           chunk = count;
               ^
577.           if (chunk > drbg->max_request)
578.               chunk = drbg->max_request;

crypto/rand/drbg_lib.c:579:15: Call
577.           if (chunk > drbg->max_request)
578.               chunk = drbg->max_request;
579.           ret = RAND_DRBG_generate(drbg, out, chunk, 0, NULL, 0);
                     ^
580.           if (!ret)
581.               goto err;

crypto/rand/drbg_lib.c:355:1: Parameter `outlen`
  353.    *
  354.    */
  355. > int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
  356.                          int prediction_resistance,
  357.                          const unsigned char *adin, size_t adinlen)

crypto/rand/drbg_lib.c:401:10: Call
  399.       }
  400.   
  401.       if (!ctr_generate(drbg, out, outlen, adin, adinlen)) {
                  ^
  402.           drbg->state = DRBG_ERROR;
  403.           RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_GENERATE_ERROR);

crypto/rand/drbg_rand.c:266:1: <Offset trace>
264.   }
265.   
266. > int ctr_generate(RAND_DRBG *drbg,
267.                    unsigned char *out, size_t outlen,
268.                    const unsigned char *adin, size_t adinlen)

crypto/rand/drbg_rand.c:266:1: Parameter `outlen`
    264.   }
    265.   
    266. > int ctr_generate(RAND_DRBG *drbg,
    267.                    unsigned char *out, size_t outlen,
    268.                    const unsigned char *adin, size_t adinlen)

crypto/rand/drbg_rand.c:266:1: <Length trace>
264.   }
265.   
266. > int ctr_generate(RAND_DRBG *drbg,
267.                    unsigned char *out, size_t outlen,
268.                    const unsigned char *adin, size_t adinlen)

crypto/rand/drbg_rand.c:266:1: Parameter `drbg->ctr.K[*]`
    264.   }
    265.   
    266. > int ctr_generate(RAND_DRBG *drbg,
    267.                    unsigned char *out, size_t outlen,
    268.                    const unsigned char *adin, size_t adinlen)

crypto/rand/drbg_rand.c:288:13: Array access: Offset added: [0, 15] Size: [0, +oo] by call to `RAND_DRBG_generate` 
    286.               /* Use K as temp space as it will be updated */
    287.               AES_encrypt(ctr->V, ctr->K, &ctr->ks);
    288.               memcpy(out, ctr->K, outlen);
                       ^
    289.               break;
    290.           }

int ctr_generate(RAND_DRBG *drbg,
                 unsigned char *out, size_t outlen,
                 const unsigned char *adin, size_t adinlen)
{
    RAND_DRBG_CTR *ctr = &drbg->ctr;
    if (adin != NULL && adinlen != 0) {
        ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0);
        if (drbg->flags & RAND_DRBG_FLAG_CTR_USE_DF) {
            adin = NULL;
            adinlen = 1;
        }
    } else {
        adinlen = 0;
    }
    for ( ; ; ) {
        inc_128(ctr);
        if (outlen < 16) {
            AES_encrypt(ctr->V, ctr->K, &ctr->ks);
            memcpy(out, ctr->K, outlen);
            break;
        }
        AES_encrypt(ctr->V, out, &ctr->ks);
        out += 16;
        outlen -= 16;
        if (outlen == 0)
            break;
    }
    ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0);
    return 1;
}
['static int drbg_bytes(unsigned char *out, int count)\n{\n    int ret = 0;\n    size_t chunk;\n    RAND_DRBG *drbg = RAND_DRBG_get0_global();\n    if (drbg == NULL)\n        return 0;\n    CRYPTO_THREAD_write_lock(drbg->lock);\n    if (drbg->state == DRBG_UNINITIALISED)\n        goto err;\n    for ( ; count > 0; count -= chunk, out += chunk) {\n        chunk = count;\n        if (chunk > drbg->max_request)\n            chunk = drbg->max_request;\n        ret = RAND_DRBG_generate(drbg, out, chunk, 0, NULL, 0);\n        if (!ret)\n            goto err;\n    }\n    ret = 1;\nerr:\n    CRYPTO_THREAD_unlock(drbg->lock);\n    return ret;\n}', 'int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,\n                       int prediction_resistance,\n                       const unsigned char *adin, size_t adinlen)\n{\n    int reseed_required = 0;\n    if (drbg->state != DRBG_READY) {\n        rand_drbg_restart(drbg, NULL, 0, 0);\n        if (drbg->state == DRBG_ERROR) {\n            RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_IN_ERROR_STATE);\n            return 0;\n        }\n        if (drbg->state == DRBG_UNINITIALISED) {\n            RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_NOT_INSTANTIATED);\n            return 0;\n        }\n    }\n    if (outlen > drbg->max_request) {\n        RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_REQUEST_TOO_LARGE_FOR_DRBG);\n        return 0;\n    }\n    if (adinlen > drbg->max_adinlen) {\n        RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_ADDITIONAL_INPUT_TOO_LONG);\n        return 0;\n    }\n    if (drbg->fork_count != rand_fork_count) {\n        drbg->fork_count = rand_fork_count;\n        reseed_required = 1;\n    }\n    if (drbg->reseed_counter >= drbg->reseed_interval)\n        reseed_required = 1;\n    if (reseed_required || prediction_resistance) {\n        if (!RAND_DRBG_reseed(drbg, adin, adinlen)) {\n            RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_RESEED_ERROR);\n            return 0;\n        }\n        adin = NULL;\n        adinlen = 0;\n    }\n    if (!ctr_generate(drbg, out, outlen, adin, adinlen)) {\n        drbg->state = DRBG_ERROR;\n        RANDerr(RAND_F_RAND_DRBG_GENERATE, RAND_R_GENERATE_ERROR);\n        return 0;\n    }\n    drbg->reseed_counter++;\n    return 1;\n}', 'int ctr_generate(RAND_DRBG *drbg,\n                 unsigned char *out, size_t outlen,\n                 const unsigned char *adin, size_t adinlen)\n{\n    RAND_DRBG_CTR *ctr = &drbg->ctr;\n    if (adin != NULL && adinlen != 0) {\n        ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0);\n        if (drbg->flags & RAND_DRBG_FLAG_CTR_USE_DF) {\n            adin = NULL;\n            adinlen = 1;\n        }\n    } else {\n        adinlen = 0;\n    }\n    for ( ; ; ) {\n        inc_128(ctr);\n        if (outlen < 16) {\n            AES_encrypt(ctr->V, ctr->K, &ctr->ks);\n            memcpy(out, ctr->K, outlen);\n            break;\n        }\n        AES_encrypt(ctr->V, out, &ctr->ks);\n        out += 16;\n        outlen -= 16;\n        if (outlen == 0)\n            break;\n    }\n    ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0);\n    return 1;\n}']