ssl/record/ssl3_record.c:1495: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [1, 64]):unsigned64 by call to `ssl3_cbc_copy_mac`.
Showing all 10 steps of the trace


ssl/record/ssl3_record.c:1370:1: Parameter `s->rlayer.rrec.length`
1368.   }
1369.   
1370. > int dtls1_process_record(SSL *s, DTLS1_BITMAP *bitmap)
1371.   {
1372.       int i, al;

ssl/record/ssl3_record.c:1410:5: Assignment
1408.       /* decrypt in place in 'rr->input' */
1409.       rr->data = rr->input;
1410.       rr->orig_len = rr->length;
            ^
1411.   
1412.       if (SSL_READ_ETM(s) && s->read_hash) {

ssl/record/ssl3_record.c:1495:13: Call
1493.                */
1494.               mac = mac_tmp;
1495.               ssl3_cbc_copy_mac(mac_tmp, rr, mac_size);
                    ^
1496.               rr->length -= mac_size;
1497.           } else {

ssl/record/ssl3_record.c:1298:1: Parameter `md_size`
  1296.   #define CBC_MAC_ROTATE_IN_PLACE
  1297.   
  1298. > void ssl3_cbc_copy_mac(unsigned char *out,
  1299.                          const SSL3_RECORD *rec, size_t md_size)
  1300.   {

ssl/record/ssl3_record.c:1355:26: Call
  1353.           ((volatile unsigned char *)rotated_mac)[rotate_offset ^ 32];
  1354.           out[j++] = rotated_mac[rotate_offset++];
  1355.           rotate_offset &= constant_time_lt_s(rotate_offset, md_size);
                                   ^
  1356.       }
  1357.   #else

include/internal/constant_time_locl.h:117:1: <LHS trace>
115.   }
116.   
117. > static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
118.   {
119.       return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));

include/internal/constant_time_locl.h:117:1: Parameter `a`
    115.   }
    116.   
    117. > static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
    118.   {
    119.       return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));

include/internal/constant_time_locl.h:117:1: <RHS trace>
115.   }
116.   
117. > static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
118.   {
119.       return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));

include/internal/constant_time_locl.h:117:1: Parameter `b`
    115.   }
    116.   
    117. > static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
    118.   {
    119.       return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));

include/internal/constant_time_locl.h:119:12: Binary operation: ([0, +oo] - [1, 64]):unsigned64 by call to `ssl3_cbc_copy_mac` 
    117.   static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
    118.   {
    119.       return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));
                      ^
    120.   }
    121.   

static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)
{
    return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));
}
['int dtls1_process_record(SSL *s, DTLS1_BITMAP *bitmap)\n{\n    int i, al;\n    int enc_err;\n    SSL_SESSION *sess;\n    SSL3_RECORD *rr;\n    int imac_size;\n    size_t mac_size;\n    unsigned char md[EVP_MAX_MD_SIZE];\n    rr = RECORD_LAYER_get_rrec(&s->rlayer);\n    sess = s->session;\n    rr->input = &(RECORD_LAYER_get_packet(&s->rlayer)[DTLS1_RT_HEADER_LENGTH]);\n    if (rr->length > SSL3_RT_MAX_ENCRYPTED_LENGTH) {\n        al = SSL_AD_RECORD_OVERFLOW;\n        SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);\n        goto f_err;\n    }\n    rr->data = rr->input;\n    rr->orig_len = rr->length;\n    if (SSL_READ_ETM(s) && s->read_hash) {\n        unsigned char *mac;\n        mac_size = EVP_MD_CTX_size(s->read_hash);\n        OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);\n        if (rr->orig_len < mac_size) {\n            al = SSL_AD_DECODE_ERROR;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_LENGTH_TOO_SHORT);\n            goto f_err;\n        }\n        rr->length -= mac_size;\n        mac = rr->data + rr->length;\n        i = s->method->ssl3_enc->mac(s, rr, md, 0   );\n        if (i == 0 || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0) {\n            al = SSL_AD_BAD_RECORD_MAC;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD,\n                   SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);\n            goto f_err;\n        }\n    }\n    enc_err = s->method->ssl3_enc->enc(s, rr, 1, 0);\n    if (enc_err == 0) {\n        rr->length = 0;\n        RECORD_LAYER_reset_packet_length(&s->rlayer);\n        goto err;\n    }\n#ifdef SSL_DEBUG\n    printf("dec %ld\\n", rr->length);\n    {\n        size_t z;\n        for (z = 0; z < rr->length; z++)\n            printf("%02X%c", rr->data[z], ((z + 1) % 16) ? \' \' : \'\\n\');\n    }\n    printf("\\n");\n#endif\n    if ((sess != NULL) && !SSL_READ_ETM(s) &&\n        (s->enc_read_ctx != NULL) && (EVP_MD_CTX_md(s->read_hash) != NULL)) {\n        unsigned char *mac = NULL;\n        unsigned char mac_tmp[EVP_MAX_MD_SIZE];\n        imac_size = EVP_MD_CTX_size(s->read_hash);\n        if (imac_size < 0) {\n            al = SSL_AD_INTERNAL_ERROR;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD, ERR_LIB_EVP);\n            goto f_err;\n        }\n        mac_size = (size_t)imac_size;\n        OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);\n        if (rr->orig_len < mac_size ||\n            (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&\n             rr->orig_len < mac_size + 1)) {\n            al = SSL_AD_DECODE_ERROR;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_LENGTH_TOO_SHORT);\n            goto f_err;\n        }\n        if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE) {\n            mac = mac_tmp;\n            ssl3_cbc_copy_mac(mac_tmp, rr, mac_size);\n            rr->length -= mac_size;\n        } else {\n            rr->length -= mac_size;\n            mac = &rr->data[rr->length];\n        }\n        i = s->method->ssl3_enc->mac(s, rr, md, 0   );\n        if (i == 0 || mac == NULL\n            || CRYPTO_memcmp(md, mac, mac_size) != 0)\n            enc_err = -1;\n        if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size)\n            enc_err = -1;\n    }\n    if (enc_err < 0) {\n        rr->length = 0;\n        RECORD_LAYER_reset_packet_length(&s->rlayer);\n        goto err;\n    }\n    if (s->expand != NULL) {\n        if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH) {\n            al = SSL_AD_RECORD_OVERFLOW;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD,\n                   SSL_R_COMPRESSED_LENGTH_TOO_LONG);\n            goto f_err;\n        }\n        if (!ssl3_do_uncompress(s, rr)) {\n            al = SSL_AD_DECOMPRESSION_FAILURE;\n            SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_BAD_DECOMPRESSION);\n            goto f_err;\n        }\n    }\n    if (rr->length > SSL3_RT_MAX_PLAIN_LENGTH) {\n        al = SSL_AD_RECORD_OVERFLOW;\n        SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_DATA_LENGTH_TOO_LONG);\n        goto f_err;\n    }\n    rr->off = 0;\n    RECORD_LAYER_reset_packet_length(&s->rlayer);\n    dtls1_record_bitmap_update(s, bitmap);\n    return (1);\n f_err:\n    ssl3_send_alert(s, SSL3_AL_FATAL, al);\n err:\n    return (0);\n}', 'void ssl3_cbc_copy_mac(unsigned char *out,\n                       const SSL3_RECORD *rec, size_t md_size)\n{\n#if defined(CBC_MAC_ROTATE_IN_PLACE)\n    unsigned char rotated_mac_buf[64 + EVP_MAX_MD_SIZE];\n    unsigned char *rotated_mac;\n#else\n    unsigned char rotated_mac[EVP_MAX_MD_SIZE];\n#endif\n    size_t mac_end = rec->length;\n    size_t mac_start = mac_end - md_size;\n    size_t in_mac;\n    size_t scan_start = 0;\n    size_t i, j;\n    size_t rotate_offset;\n    OPENSSL_assert(rec->orig_len >= md_size);\n    OPENSSL_assert(md_size <= EVP_MAX_MD_SIZE);\n#if defined(CBC_MAC_ROTATE_IN_PLACE)\n    rotated_mac = rotated_mac_buf + ((0 - (size_t)rotated_mac_buf) & 63);\n#endif\n    if (rec->orig_len > md_size + 255 + 1)\n        scan_start = rec->orig_len - (md_size + 255 + 1);\n    in_mac = 0;\n    rotate_offset = 0;\n    memset(rotated_mac, 0, md_size);\n    for (i = scan_start, j = 0; i < rec->orig_len; i++) {\n        size_t mac_started = constant_time_eq_s(i, mac_start);\n        size_t mac_ended = constant_time_lt_s(i, mac_end);\n        unsigned char b = rec->data[i];\n        in_mac |= mac_started;\n        in_mac &= mac_ended;\n        rotate_offset |= j & mac_started;\n        rotated_mac[j++] |= b & in_mac;\n        j &= constant_time_lt_s(j, md_size);\n    }\n#if defined(CBC_MAC_ROTATE_IN_PLACE)\n    j = 0;\n    for (i = 0; i < md_size; i++) {\n        ((volatile unsigned char *)rotated_mac)[rotate_offset ^ 32];\n        out[j++] = rotated_mac[rotate_offset++];\n        rotate_offset &= constant_time_lt_s(rotate_offset, md_size);\n    }\n#else\n    memset(out, 0, md_size);\n    rotate_offset = md_size - rotate_offset;\n    rotate_offset &= constant_time_lt_s(rotate_offset, md_size);\n    for (i = 0; i < md_size; i++) {\n        for (j = 0; j < md_size; j++)\n            out[j] |= rotated_mac[i] & constant_time_eq_8_s(j, rotate_offset);\n        rotate_offset++;\n        rotate_offset &= constant_time_lt_s(rotate_offset, md_size);\n    }\n#endif\n}', 'static ossl_inline size_t constant_time_lt_s(size_t a, size_t b)\n{\n    return constant_time_msb_s(a ^ ((a ^ b) | ((a - b) ^ b)));\n}']