190 lines
6.0 KiB
C
190 lines
6.0 KiB
C
#define MBEDTLS_ALLOW_PRIVATE_ACCESS
|
|
|
|
#include "mbedtls/ssl.h"
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
#include "mbedtls/ssl_ticket.h"
|
|
#include "test/certs.h"
|
|
#include "common.h"
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
|
|
|
|
#if defined(MBEDTLS_SSL_SRV_C) && \
|
|
defined(MBEDTLS_ENTROPY_C) && \
|
|
defined(MBEDTLS_CTR_DRBG_C)
|
|
const char *pers = "fuzz_server";
|
|
static int initialized = 0;
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
|
|
static mbedtls_x509_crt srvcert;
|
|
static mbedtls_pk_context pkey;
|
|
#endif
|
|
const char *alpn_list[3];
|
|
|
|
#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
|
|
const unsigned char psk[] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
|
|
};
|
|
const char psk_id[] = "Client_identity";
|
|
#endif
|
|
#endif // MBEDTLS_SSL_SRV_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C
|
|
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
|
#if defined(MBEDTLS_SSL_SRV_C) && \
|
|
defined(MBEDTLS_ENTROPY_C) && \
|
|
defined(MBEDTLS_CTR_DRBG_C)
|
|
int ret;
|
|
size_t len;
|
|
mbedtls_ssl_context ssl;
|
|
mbedtls_ssl_config conf;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
mbedtls_entropy_context entropy;
|
|
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
|
mbedtls_ssl_ticket_context ticket_ctx;
|
|
#endif
|
|
unsigned char buf[4096];
|
|
fuzzBufferOffset_t biomemfuzz;
|
|
uint8_t options;
|
|
|
|
//we take 1 byte as options input
|
|
if (Size < 1) {
|
|
return 0;
|
|
}
|
|
options = Data[Size - 1];
|
|
|
|
if (initialized == 0) {
|
|
mbedtls_ctr_drbg_init( &ctr_drbg );
|
|
mbedtls_entropy_init( &entropy );
|
|
|
|
if( mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy,
|
|
(const unsigned char *) pers, strlen( pers ) ) != 0 )
|
|
return 1;
|
|
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
|
|
mbedtls_x509_crt_init( &srvcert );
|
|
mbedtls_pk_init( &pkey );
|
|
if (mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
|
|
mbedtls_test_srv_crt_len ) != 0)
|
|
return 1;
|
|
if (mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
|
|
mbedtls_test_cas_pem_len ) != 0)
|
|
return 1;
|
|
if (mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
|
|
mbedtls_test_srv_key_len, NULL, 0,
|
|
dummy_random, &ctr_drbg ) != 0)
|
|
return 1;
|
|
#endif
|
|
|
|
alpn_list[0] = "HTTP";
|
|
alpn_list[1] = "fuzzalpn";
|
|
alpn_list[2] = NULL;
|
|
|
|
dummy_init();
|
|
|
|
initialized = 1;
|
|
}
|
|
mbedtls_ssl_init( &ssl );
|
|
mbedtls_ssl_config_init( &conf );
|
|
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
|
mbedtls_ssl_ticket_init( &ticket_ctx );
|
|
#endif
|
|
|
|
if( mbedtls_ssl_config_defaults( &conf,
|
|
MBEDTLS_SSL_IS_SERVER,
|
|
MBEDTLS_SSL_TRANSPORT_STREAM,
|
|
MBEDTLS_SSL_PRESET_DEFAULT ) != 0 )
|
|
goto exit;
|
|
|
|
srand(1);
|
|
mbedtls_ssl_conf_rng( &conf, dummy_random, &ctr_drbg );
|
|
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
|
|
mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
|
|
if( mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) != 0 )
|
|
goto exit;
|
|
#endif
|
|
|
|
mbedtls_ssl_conf_cert_req_ca_list( &conf, (options & 0x1) ? MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED : MBEDTLS_SSL_CERT_REQ_CA_LIST_DISABLED );
|
|
#if defined(MBEDTLS_SSL_ALPN)
|
|
if (options & 0x2) {
|
|
mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list );
|
|
}
|
|
#endif
|
|
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
|
if( options & 0x4 )
|
|
{
|
|
if( mbedtls_ssl_ticket_setup( &ticket_ctx,
|
|
dummy_random, &ctr_drbg,
|
|
MBEDTLS_CIPHER_AES_256_GCM,
|
|
86400 ) != 0 )
|
|
goto exit;
|
|
|
|
mbedtls_ssl_conf_session_tickets_cb( &conf,
|
|
mbedtls_ssl_ticket_write,
|
|
mbedtls_ssl_ticket_parse,
|
|
&ticket_ctx );
|
|
}
|
|
#endif
|
|
#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
|
|
mbedtls_ssl_conf_extended_master_secret( &conf, (options & 0x10) ? MBEDTLS_SSL_EXTENDED_MS_DISABLED : MBEDTLS_SSL_EXTENDED_MS_ENABLED);
|
|
#endif
|
|
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
|
|
mbedtls_ssl_conf_encrypt_then_mac( &conf, (options & 0x20) ? MBEDTLS_SSL_ETM_ENABLED : MBEDTLS_SSL_ETM_DISABLED);
|
|
#endif
|
|
#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
|
|
if (options & 0x40) {
|
|
mbedtls_ssl_conf_psk( &conf, psk, sizeof( psk ),
|
|
(const unsigned char *) psk_id, sizeof( psk_id ) - 1 );
|
|
}
|
|
#endif
|
|
#if defined(MBEDTLS_SSL_RENEGOTIATION)
|
|
mbedtls_ssl_conf_renegotiation( &conf, (options & 0x80) ? MBEDTLS_SSL_RENEGOTIATION_ENABLED : MBEDTLS_SSL_RENEGOTIATION_DISABLED );
|
|
#endif
|
|
|
|
if( mbedtls_ssl_setup( &ssl, &conf ) != 0 )
|
|
goto exit;
|
|
|
|
biomemfuzz.Data = Data;
|
|
biomemfuzz.Size = Size-1;
|
|
biomemfuzz.Offset = 0;
|
|
mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, NULL );
|
|
|
|
mbedtls_ssl_session_reset( &ssl );
|
|
ret = mbedtls_ssl_handshake( &ssl );
|
|
if( ret == 0 )
|
|
{
|
|
//keep reading data from server until the end
|
|
do
|
|
{
|
|
len = sizeof( buf ) - 1;
|
|
ret = mbedtls_ssl_read( &ssl, buf, len );
|
|
|
|
if( ret == MBEDTLS_ERR_SSL_WANT_READ )
|
|
continue;
|
|
else if( ret <= 0 )
|
|
//EOF or error
|
|
break;
|
|
}
|
|
while( 1 );
|
|
}
|
|
|
|
exit:
|
|
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
|
mbedtls_ssl_ticket_free( &ticket_ctx );
|
|
#endif
|
|
mbedtls_entropy_free( &entropy );
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
mbedtls_ssl_config_free( &conf );
|
|
mbedtls_ssl_free( &ssl );
|
|
|
|
#else
|
|
(void) Data;
|
|
(void) Size;
|
|
#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */
|
|
|
|
return 0;
|
|
}
|