diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/fuzz')
29 files changed, 1250 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/fuzz/.gitignore b/lib/mbedtls-2.27.0/programs/fuzz/.gitignore new file mode 100644 index 0000000..5dc0960 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/.gitignore @@ -0,0 +1,9 @@ +fuzz_client +fuzz_dtlsclient +fuzz_dtlsserver +fuzz_privkey +fuzz_pubkey +fuzz_server +fuzz_x509crl +fuzz_x509crt +fuzz_x509csr diff --git a/lib/mbedtls-2.27.0/programs/fuzz/CMakeLists.txt b/lib/mbedtls-2.27.0/programs/fuzz/CMakeLists.txt new file mode 100644 index 0000000..fd55e31 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/CMakeLists.txt @@ -0,0 +1,55 @@ +set(libs + ${mbedtls_target} +) + +if(USE_PKCS11_HELPER_LIBRARY) + set(libs ${libs} pkcs11-helper) +endif(USE_PKCS11_HELPER_LIBRARY) + +if(ENABLE_ZLIB_SUPPORT) + set(libs ${libs} ${ZLIB_LIBRARIES}) +endif(ENABLE_ZLIB_SUPPORT) + +find_library(FUZZINGENGINE_LIB FuzzingEngine) +if(FUZZINGENGINE_LIB) + project(fuzz CXX) +endif() + +set(executables_no_common_c + fuzz_privkey + fuzz_pubkey + fuzz_x509crl + fuzz_x509crt + fuzz_x509csr +) + +set(executables_with_common_c + fuzz_client + fuzz_dtlsclient + fuzz_dtlsserver + fuzz_server +) + +foreach(exe IN LISTS executables_no_common_c executables_with_common_c) + + set(exe_sources ${exe}.c $<TARGET_OBJECTS:mbedtls_test>) + if(NOT FUZZINGENGINE_LIB) + list(APPEND exe_sources onefile.c) + endif() + + # This emulates "if ( ... IN_LIST ... )" which becomes available in CMake 3.3 + list(FIND executables_with_common_c ${exe} exe_index) + if(${exe_index} GREATER -1) + list(APPEND exe_sources common.c) + endif() + + add_executable(${exe} ${exe_sources}) + + if (NOT FUZZINGENGINE_LIB) + target_link_libraries(${exe} ${libs}) + else() + target_link_libraries(${exe} ${libs} FuzzingEngine) + SET_TARGET_PROPERTIES(${exe} PROPERTIES LINKER_LANGUAGE CXX) + endif() + +endforeach() diff --git a/lib/mbedtls-2.27.0/programs/fuzz/Makefile b/lib/mbedtls-2.27.0/programs/fuzz/Makefile new file mode 100644 index 0000000..084fc24 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/Makefile @@ -0,0 +1,72 @@ +MBEDTLS_TEST_PATH:=../../tests/src +MBEDTLS_TEST_OBJS:=$(patsubst %.c,%.o,$(wildcard ${MBEDTLS_TEST_PATH}/*.c ${MBEDTLS_TEST_PATH}/drivers/*.c)) + +LOCAL_CFLAGS = -I../../tests/include -I../../include -D_FILE_OFFSET_BITS=64 +LOCAL_LDFLAGS = ${MBEDTLS_TEST_OBJS} \ + -L../../library \ + -lmbedtls$(SHARED_SUFFIX) \ + -lmbedx509$(SHARED_SUFFIX) \ + -lmbedcrypto$(SHARED_SUFFIX) + +LOCAL_CFLAGS += $(patsubst -I../%,-I../../%,$(THIRDPARTY_INCLUDES)) + +ifndef SHARED +DEP=../../library/libmbedcrypto.a ../../library/libmbedx509.a ../../library/libmbedtls.a +else +DEP=../../library/libmbedcrypto.$(DLEXT) ../../library/libmbedx509.$(DLEXT) ../../library/libmbedtls.$(DLEXT) +endif + + +DLEXT ?= so +EXEXT= +SHARED_SUFFIX= + +# Zlib shared library extensions: +ifdef ZLIB +LOCAL_LDFLAGS += -lz +endif + +ifdef FUZZINGENGINE +LOCAL_LDFLAGS += -lFuzzingEngine +endif + +# A test application is built for each suites/test_suite_*.data file. +# Application name is same as .data file's base name and can be +# constructed by stripping path 'suites/' and extension .data. +APPS = $(basename $(wildcard fuzz_*.c)) + +# Construct executable name by adding OS specific suffix $(EXEXT). +BINARIES := $(addsuffix $(EXEXT),$(APPS)) + +.SILENT: + +.PHONY: all check test clean + +all: $(BINARIES) + +$(DEP): + $(MAKE) -C ../../library + +C_FILES := $(addsuffix .c,$(APPS)) + +%.o: %.c + $(CC) $(LOCAL_CFLAGS) $(CFLAGS) -c $< -o $@ + + +ifdef FUZZINGENGINE +$(BINARIES): %$(EXEXT): %.o common.o $(DEP) + echo " $(CC) common.o $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@" + $(CXX) common.o $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ +else +$(BINARIES): %$(EXEXT): %.o common.o onefile.o $(DEP) + echo " $(CC) common.o onefile.o $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@" + $(CC) common.o onefile.o $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ +endif + +clean: +ifndef WINDOWS + rm -rf $(BINARIES) *.o +else + if exist *.o del /Q /F *.o + if exist *.exe del /Q /F *.exe +endif diff --git a/lib/mbedtls-2.27.0/programs/fuzz/README.md b/lib/mbedtls-2.27.0/programs/fuzz/README.md new file mode 100644 index 0000000..b6a4333 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/README.md @@ -0,0 +1,68 @@ +What is it? +------ + +This directory contains fuzz targets. +Fuzz targets are simple codes using the library. +They are used with a so-called fuzz driver, which will generate inputs, try to process them with the fuzz target, and alert in case of an unwanted behavior (such as a buffer overflow for instance). + +These targets were meant to be used with oss-fuzz but can be used in other contexts. + +This code was contributed by Philippe Antoine ( Catena cyber ). + +How to run? +------ + +To run the fuzz targets like oss-fuzz: +``` +git clone https://github.com/google/oss-fuzz +cd oss-fuzz +python infra/helper.py build_image mbedtls +python infra/helper.py build_fuzzers --sanitizer address mbedtls +python infra/helper.py run_fuzzer mbedtls fuzz_client +``` +You can use `undefined` sanitizer as well as `address` sanitizer. +And you can run any of the fuzz targets like `fuzz_client`. + +To run the fuzz targets without oss-fuzz, you first need to install one libFuzzingEngine (libFuzzer for instance). +Then you need to compile the code with the compiler flags of the wished sanitizer. +``` +perl scripts/config.py set MBEDTLS_PLATFORM_TIME_ALT +mkdir build +cd build +cmake .. +make +``` +Finally, you can run the targets like `./test/fuzz/fuzz_client`. + + +Corpus generation for network trafic targets +------ + +These targets use network trafic as inputs : +* client : simulates a client against (fuzzed) server traffic +* server : simulates a server against (fuzzed) client traffic +* dtls_client +* dtls_server + +They also use the last bytes as configuration options. + +To generate corpus for these targets, you can do the following, not fully automated steps : +* Build mbedtls programs ssl_server2 and ssl_client2 +* Run them one against the other with `reproducible` option turned on while capturing trafic into test.pcap +* Extract tcp payloads, for instance with tshark : `tshark -Tfields -e tcp.dstport -e tcp.payload -r test.pcap > test.txt` +* Run a dummy python script to output either client or server corpus file like `python dummy.py test.txt > test.cor` +* Finally, you can add the options by appending the last bytes to the file test.cor + +Here is an example of dummy.py for extracting payload from client to server (if we used `tcp.dstport` in tshark command) +``` +import sys +import binascii + +f = open(sys.argv[1]) +for l in f.readlines(): + portAndPl=l.split() + if len(portAndPl) == 2: + # determine client or server based on port + if portAndPl[0] == "4433": + print(binascii.unhexlify(portAndPl[1].replace(":",""))) +``` diff --git a/lib/mbedtls-2.27.0/programs/fuzz/common.c b/lib/mbedtls-2.27.0/programs/fuzz/common.c new file mode 100644 index 0000000..ac39ee2 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/common.c @@ -0,0 +1,96 @@ +#include "common.h" +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include "mbedtls/ctr_drbg.h" + +mbedtls_time_t dummy_constant_time( mbedtls_time_t* time ) +{ + (void) time; + return 0x5af2a056; +} + +void dummy_init() +{ +#if defined(MBEDTLS_PLATFORM_TIME_ALT) + mbedtls_platform_set_time( dummy_constant_time ); +#else + fprintf(stderr, "Warning: fuzzing without constant time\n"); +#endif +} + +int dummy_send( void *ctx, const unsigned char *buf, size_t len ) +{ + //silence warning about unused parameter + (void) ctx; + (void) buf; + + //pretends we wrote everything ok + if( len > INT_MAX ) { + return( -1 ); + } + return( (int) len ); +} + +int fuzz_recv( void *ctx, unsigned char *buf, size_t len ) +{ + //reads from the buffer from fuzzer + fuzzBufferOffset_t * biomemfuzz = (fuzzBufferOffset_t *) ctx; + + if(biomemfuzz->Offset == biomemfuzz->Size) { + //EOF + return( 0 ); + } + if( len > INT_MAX ) { + return( -1 ); + } + if( len + biomemfuzz->Offset > biomemfuzz->Size ) { + //do not overflow + len = biomemfuzz->Size - biomemfuzz->Offset; + } + memcpy(buf, biomemfuzz->Data + biomemfuzz->Offset, len); + biomemfuzz->Offset += len; + return( (int) len ); +} + +int dummy_random( void *p_rng, unsigned char *output, size_t output_len ) +{ + int ret; + size_t i; + +#if defined(MBEDTLS_CTR_DRBG_C) + //use mbedtls_ctr_drbg_random to find bugs in it + ret = mbedtls_ctr_drbg_random(p_rng, output, output_len); +#else + (void) p_rng; + ret = 0; +#endif + for (i=0; i<output_len; i++) { + //replace result with pseudo random + output[i] = (unsigned char) rand(); + } + return( ret ); +} + +int dummy_entropy( void *data, unsigned char *output, size_t len ) +{ + size_t i; + (void) data; + + //use mbedtls_entropy_func to find bugs in it + //test performance impact of entropy + //ret = mbedtls_entropy_func(data, output, len); + for (i=0; i<len; i++) { + //replace result with pseudo random + output[i] = (unsigned char) rand(); + } + return( 0 ); +} + +int fuzz_recv_timeout( void *ctx, unsigned char *buf, size_t len, + uint32_t timeout ) +{ + (void) timeout; + + return fuzz_recv(ctx, buf, len); +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/common.h b/lib/mbedtls-2.27.0/programs/fuzz/common.h new file mode 100644 index 0000000..5586c06 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/common.h @@ -0,0 +1,19 @@ +#include "mbedtls/platform_time.h" +#include <stdint.h> + +typedef struct fuzzBufferOffset +{ + const uint8_t *Data; + size_t Size; + size_t Offset; +} fuzzBufferOffset_t; + +mbedtls_time_t dummy_constant_time( mbedtls_time_t* time ); +void dummy_init(); + +int dummy_send( void *ctx, const unsigned char *buf, size_t len ); +int fuzz_recv( void *ctx, unsigned char *buf, size_t len ); +int dummy_random( void *p_rng, unsigned char *output, size_t output_len ); +int dummy_entropy( void *data, unsigned char *output, size_t len ); +int fuzz_recv_timeout( void *ctx, unsigned char *buf, size_t len, + uint32_t timeout ); diff --git a/lib/mbedtls-2.27.0/programs/fuzz/corpuses/client b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/client Binary files differnew file mode 100644 index 0000000..48d0a67 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/client diff --git a/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsclient b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsclient Binary files differnew file mode 100644 index 0000000..87c3ca3 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsclient diff --git a/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsserver b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsserver Binary files differnew file mode 100644 index 0000000..7a7a117 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/dtlsserver diff --git a/lib/mbedtls-2.27.0/programs/fuzz/corpuses/server b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/server Binary files differnew file mode 100644 index 0000000..fbeb019 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/corpuses/server diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.c new file mode 100644 index 0000000..270ae8a --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.c @@ -0,0 +1,177 @@ +#include "mbedtls/ssl.h" +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/certs.h" +#include "common.h" +#include <string.h> +#include <stdlib.h> +#include <stdint.h> + + +#if defined(MBEDTLS_SSL_CLI_C) && \ + defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_CTR_DRBG_C) +static int initialized = 0; +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) +static mbedtls_x509_crt cacert; +#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 + +const char *pers = "fuzz_client"; +#endif /* MBEDTLS_SSL_CLI_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */ + + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#if defined(MBEDTLS_SSL_CLI_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; + unsigned char buf[4096]; + fuzzBufferOffset_t biomemfuzz; + uint16_t options; + + if (initialized == 0) { +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + mbedtls_x509_crt_init( &cacert ); + if (mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem, + mbedtls_test_cas_pem_len ) != 0) + return 1; +#endif + + alpn_list[0] = "HTTP"; + alpn_list[1] = "fuzzalpn"; + alpn_list[2] = NULL; + + dummy_init(); + + initialized = 1; + } + + //we take 1 byte as options input + if (Size < 2) { + return 0; + } + options = (Data[Size - 2] << 8) | Data[Size - 1]; + //Avoid warnings if compile options imply no options + (void) options; + + mbedtls_ssl_init( &ssl ); + mbedtls_ssl_config_init( &conf ); + 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 ) + goto exit; + + if( mbedtls_ssl_config_defaults( &conf, + MBEDTLS_SSL_IS_CLIENT, + MBEDTLS_SSL_TRANSPORT_STREAM, + MBEDTLS_SSL_PRESET_DEFAULT ) != 0 ) + goto exit; + +#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) + if (options & 2) { + mbedtls_ssl_conf_psk( &conf, psk, sizeof( psk ), + (const unsigned char *) psk_id, sizeof( psk_id ) - 1 ); + } +#endif + +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + if (options & 4) { + mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL ); + mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_REQUIRED ); + } else +#endif + { + mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_NONE ); + } +#if defined(MBEDTLS_SSL_TRUNCATED_HMAC) + mbedtls_ssl_conf_truncated_hmac( &conf, (options & 8) ? MBEDTLS_SSL_TRUNC_HMAC_ENABLED : MBEDTLS_SSL_TRUNC_HMAC_DISABLED); +#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_DISABLED : MBEDTLS_SSL_ETM_ENABLED); +#endif +#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) + mbedtls_ssl_conf_cbc_record_splitting( &conf, (options & 0x40) ? MBEDTLS_SSL_CBC_RECORD_SPLITTING_ENABLED : MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED ); +#endif +#if defined(MBEDTLS_SSL_RENEGOTIATION) + mbedtls_ssl_conf_renegotiation( &conf, (options & 0x80) ? MBEDTLS_SSL_RENEGOTIATION_ENABLED : MBEDTLS_SSL_RENEGOTIATION_DISABLED ); +#endif +#if defined(MBEDTLS_SSL_SESSION_TICKETS) + mbedtls_ssl_conf_session_tickets( &conf, (options & 0x100) ? MBEDTLS_SSL_SESSION_TICKETS_DISABLED : MBEDTLS_SSL_SESSION_TICKETS_ENABLED ); +#endif +#if defined(MBEDTLS_SSL_ALPN) + if (options & 0x200) { + mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list ); + } +#endif + //There may be other options to add : + // mbedtls_ssl_conf_cert_profile, mbedtls_ssl_conf_sig_hashes + + srand(1); + mbedtls_ssl_conf_rng( &conf, dummy_random, &ctr_drbg ); + + if( mbedtls_ssl_setup( &ssl, &conf ) != 0 ) + goto exit; + +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + if ((options & 1) == 0) { + if( mbedtls_ssl_set_hostname( &ssl, "localhost" ) != 0 ) + goto exit; + } +#endif + + biomemfuzz.Data = Data; + biomemfuzz.Size = Size-2; + biomemfuzz.Offset = 0; + mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, NULL ); + + 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: + 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_CLI_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */ + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.options new file mode 100644 index 0000000..4d7340f --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_client.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 1048575 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.c new file mode 100644 index 0000000..ff258bc --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.c @@ -0,0 +1,123 @@ +#include <string.h> +#include <stdlib.h> +#include <stdint.h> +#include "common.h" +#include "mbedtls/ssl.h" +#if defined(MBEDTLS_SSL_PROTO_DTLS) +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/certs.h" +#include "mbedtls/timing.h" + + +#if defined(MBEDTLS_SSL_CLI_C) && \ + defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_CTR_DRBG_C) && \ + defined(MBEDTLS_TIMING_C) +static int initialized = 0; +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) +static mbedtls_x509_crt cacert; +#endif + +const char *pers = "fuzz_dtlsclient"; +#endif +#endif // MBEDTLS_SSL_PROTO_DTLS + + + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#if defined(MBEDTLS_SSL_PROTO_DTLS) && \ + defined(MBEDTLS_SSL_CLI_C) && \ + defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_CTR_DRBG_C) && \ + defined(MBEDTLS_TIMING_C) + int ret; + size_t len; + mbedtls_ssl_context ssl; + mbedtls_ssl_config conf; + mbedtls_ctr_drbg_context ctr_drbg; + mbedtls_entropy_context entropy; + mbedtls_timing_delay_context timer; + unsigned char buf[4096]; + fuzzBufferOffset_t biomemfuzz; + + if (initialized == 0) { +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + mbedtls_x509_crt_init( &cacert ); + if (mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem, + mbedtls_test_cas_pem_len ) != 0) + return 1; +#endif + dummy_init(); + + initialized = 1; + } + + mbedtls_ssl_init( &ssl ); + mbedtls_ssl_config_init( &conf ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_entropy_init( &entropy ); + + srand(1); + if( mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy, + (const unsigned char *) pers, strlen( pers ) ) != 0 ) + goto exit; + + if( mbedtls_ssl_config_defaults( &conf, + MBEDTLS_SSL_IS_CLIENT, + MBEDTLS_SSL_TRANSPORT_DATAGRAM, + MBEDTLS_SSL_PRESET_DEFAULT ) != 0 ) + goto exit; + +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL ); +#endif + mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_NONE ); + mbedtls_ssl_conf_rng( &conf, dummy_random, &ctr_drbg ); + + if( mbedtls_ssl_setup( &ssl, &conf ) != 0 ) + goto exit; + + mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay, + mbedtls_timing_get_delay ); + +#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) + if( mbedtls_ssl_set_hostname( &ssl, "localhost" ) != 0 ) + goto exit; +#endif + + biomemfuzz.Data = Data; + biomemfuzz.Size = Size; + biomemfuzz.Offset = 0; + mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout ); + + 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: + 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 + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.options new file mode 100644 index 0000000..4d7340f --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsclient.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 1048575 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.c new file mode 100644 index 0000000..4cde1fe --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.c @@ -0,0 +1,148 @@ +#include <string.h> +#include <stdlib.h> +#include <stdint.h> +#include "common.h" +#include "mbedtls/ssl.h" +#if defined(MBEDTLS_SSL_PROTO_DTLS) +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/certs.h" +#include "mbedtls/timing.h" +#include "mbedtls/ssl_cookie.h" + + +#if defined(MBEDTLS_SSL_SRV_C) && \ + defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_CTR_DRBG_C) && \ + defined(MBEDTLS_TIMING_C) +const char *pers = "fuzz_dtlsserver"; +const unsigned char client_ip[4] = {0x7F, 0, 0, 1}; +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 +#endif +#endif // MBEDTLS_SSL_PROTO_DTLS + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#if defined(MBEDTLS_SSL_PROTO_DTLS) && \ + defined(MBEDTLS_SSL_SRV_C) && \ + defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_CTR_DRBG_C) && \ + defined(MBEDTLS_TIMING_C) + int ret; + size_t len; + mbedtls_ssl_context ssl; + mbedtls_ssl_config conf; + mbedtls_ctr_drbg_context ctr_drbg; + mbedtls_entropy_context entropy; + mbedtls_timing_delay_context timer; + mbedtls_ssl_cookie_ctx cookie_ctx; + unsigned char buf[4096]; + fuzzBufferOffset_t biomemfuzz; + + if (initialized == 0) { +#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 ) != 0) + return 1; +#endif + dummy_init(); + + initialized = 1; + } + mbedtls_ssl_init( &ssl ); + mbedtls_ssl_config_init( &conf ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_entropy_init( &entropy ); + mbedtls_ssl_cookie_init( &cookie_ctx ); + + if( mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy, + (const unsigned char *) pers, strlen( pers ) ) != 0 ) + goto exit; + + + if( mbedtls_ssl_config_defaults( &conf, + MBEDTLS_SSL_IS_SERVER, + MBEDTLS_SSL_TRANSPORT_DATAGRAM, + 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 + + if( mbedtls_ssl_cookie_setup( &cookie_ctx, dummy_random, &ctr_drbg ) != 0 ) + goto exit; + + mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check, &cookie_ctx ); + + if( mbedtls_ssl_setup( &ssl, &conf ) != 0 ) + goto exit; + + mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay, + mbedtls_timing_get_delay ); + + biomemfuzz.Data = Data; + biomemfuzz.Size = Size; + biomemfuzz.Offset = 0; + mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout ); + if( mbedtls_ssl_set_client_transport_id( &ssl, client_ip, sizeof(client_ip) ) != 0 ) + goto exit; + + ret = mbedtls_ssl_handshake( &ssl ); + + if (ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) { + biomemfuzz.Offset = ssl.next_record_offset; + mbedtls_ssl_session_reset( &ssl ); + mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout ); + if( mbedtls_ssl_set_client_transport_id( &ssl, client_ip, sizeof(client_ip) ) != 0 ) + goto exit; + + 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: + mbedtls_ssl_cookie_free( &cookie_ctx ); + 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 + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.options new file mode 100644 index 0000000..4d7340f --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_dtlsserver.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 1048575 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.c new file mode 100644 index 0000000..6c968fd --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.c @@ -0,0 +1,75 @@ +#include <stdint.h> +#include <stdlib.h> +#include "mbedtls/pk.h" + +//4 Kb should be enough for every bug ;-) +#define MAX_LEN 0x1000 + + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#ifdef MBEDTLS_PK_PARSE_C + int ret; + mbedtls_pk_context pk; + + if (Size > MAX_LEN) { + //only work on small inputs + Size = MAX_LEN; + } + + mbedtls_pk_init( &pk ); + ret = mbedtls_pk_parse_key( &pk, Data, Size, NULL, 0 ); + if (ret == 0) { +#if defined(MBEDTLS_RSA_C) + if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_RSA ) + { + mbedtls_mpi N, P, Q, D, E, DP, DQ, QP; + mbedtls_rsa_context *rsa; + + mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q ); + mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP ); + mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP ); + + rsa = mbedtls_pk_rsa( pk ); + if ( mbedtls_rsa_export( rsa, &N, &P, &Q, &D, &E ) != 0 ) { + abort(); + } + if ( mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) != 0 ) { + abort(); + } + + mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q ); + mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP ); + mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP ); + } + else +#endif +#if defined(MBEDTLS_ECP_C) + if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY || + mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY_DH ) + { + mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( pk ); + mbedtls_ecp_group_id grp_id = ecp->grp.id; + const mbedtls_ecp_curve_info *curve_info = + mbedtls_ecp_curve_info_from_grp_id( grp_id ); + + /* If the curve is not supported, the key should not have been + * accepted. */ + if( curve_info == NULL ) + abort( ); + } + else +#endif + { + /* The key is valid but is not of a supported type. + * This should not happen. */ + abort( ); + } + } + mbedtls_pk_free( &pk ); +#else + (void) Data; + (void) Size; +#endif //MBEDTLS_PK_PARSE_C + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.options new file mode 100644 index 0000000..0824b19 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_privkey.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65535 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.c new file mode 100644 index 0000000..9e80350 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.c @@ -0,0 +1,75 @@ +#include <stdint.h> +#include <stdlib.h> +#include "mbedtls/pk.h" + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#ifdef MBEDTLS_PK_PARSE_C + int ret; + mbedtls_pk_context pk; + + mbedtls_pk_init( &pk ); + ret = mbedtls_pk_parse_public_key( &pk, Data, Size ); + if (ret == 0) { +#if defined(MBEDTLS_RSA_C) + if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_RSA ) + { + mbedtls_mpi N, P, Q, D, E, DP, DQ, QP; + mbedtls_rsa_context *rsa; + + mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q ); + mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP ); + mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP ); + + rsa = mbedtls_pk_rsa( pk ); + if ( mbedtls_rsa_export( rsa, &N, NULL, NULL, NULL, &E ) != 0 ) { + abort(); + } + if ( mbedtls_rsa_export( rsa, &N, &P, &Q, &D, &E ) != MBEDTLS_ERR_RSA_BAD_INPUT_DATA ) { + abort(); + } + if ( mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) != MBEDTLS_ERR_RSA_BAD_INPUT_DATA ) { + abort(); + } + + mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q ); + mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP ); + mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP ); + + } + else +#endif +#if defined(MBEDTLS_ECP_C) + if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY || + mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY_DH ) + { + mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( pk ); + mbedtls_ecp_group_id grp_id = ecp->grp.id; + const mbedtls_ecp_curve_info *curve_info = + mbedtls_ecp_curve_info_from_grp_id( grp_id ); + + /* If the curve is not supported, the key should not have been + * accepted. */ + if( curve_info == NULL ) + abort( ); + + /* It's a public key, so the private value should not have + * been changed from its initialization to 0. */ + if( mbedtls_mpi_cmp_int( &ecp->d, 0 ) != 0 ) + abort( ); + } + else +#endif + { + /* The key is valid but is not of a supported type. + * This should not happen. */ + abort( ); + } + } + mbedtls_pk_free( &pk ); +#else + (void) Data; + (void) Size; +#endif //MBEDTLS_PK_PARSE_C + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.options new file mode 100644 index 0000000..0824b19 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_pubkey.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65535 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.c new file mode 100644 index 0000000..014f386 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.c @@ -0,0 +1,189 @@ +#include "mbedtls/ssl.h" +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/certs.h" +#include "mbedtls/ssl_ticket.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) { +#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 ) != 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 ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_entropy_init( &entropy ); +#if defined(MBEDTLS_SSL_SESSION_TICKETS) + mbedtls_ssl_ticket_init( &ticket_ctx ); +#endif + + if( mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy, + (const unsigned char *) pers, strlen( pers ) ) != 0 ) + goto exit; + + + 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_TRUNCATED_HMAC) + mbedtls_ssl_conf_truncated_hmac( &conf, (options & 0x8) ? MBEDTLS_SSL_TRUNC_HMAC_ENABLED : MBEDTLS_SSL_TRUNC_HMAC_DISABLED); +#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; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.options new file mode 100644 index 0000000..4d7340f --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_server.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 1048575 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.c new file mode 100644 index 0000000..02f521c --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.c @@ -0,0 +1,22 @@ +#include <stdint.h> +#include "mbedtls/x509_crl.h" + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#ifdef MBEDTLS_X509_CRL_PARSE_C + int ret; + mbedtls_x509_crl crl; + unsigned char buf[4096]; + + mbedtls_x509_crl_init( &crl ); + ret = mbedtls_x509_crl_parse( &crl, Data, Size ); + if (ret == 0) { + ret = mbedtls_x509_crl_info( (char *) buf, sizeof( buf ) - 1, " ", &crl ); + } + mbedtls_x509_crl_free( &crl ); +#else + (void) Data; + (void) Size; +#endif + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.options new file mode 100644 index 0000000..0824b19 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crl.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65535 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.c new file mode 100644 index 0000000..8f593a1 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.c @@ -0,0 +1,22 @@ +#include <stdint.h> +#include "mbedtls/x509_crt.h" + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#ifdef MBEDTLS_X509_CRT_PARSE_C + int ret; + mbedtls_x509_crt crt; + unsigned char buf[4096]; + + mbedtls_x509_crt_init( &crt ); + ret = mbedtls_x509_crt_parse( &crt, Data, Size ); + if (ret == 0) { + ret = mbedtls_x509_crt_info( (char *) buf, sizeof( buf ) - 1, " ", &crt ); + } + mbedtls_x509_crt_free( &crt ); +#else + (void) Data; + (void) Size; +#endif + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.options new file mode 100644 index 0000000..0824b19 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509crt.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65535 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.c b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.c new file mode 100644 index 0000000..3cf28a6 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.c @@ -0,0 +1,22 @@ +#include <stdint.h> +#include "mbedtls/x509_csr.h" + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { +#ifdef MBEDTLS_X509_CSR_PARSE_C + int ret; + mbedtls_x509_csr csr; + unsigned char buf[4096]; + + mbedtls_x509_csr_init( &csr ); + ret = mbedtls_x509_csr_parse( &csr, Data, Size ); + if (ret == 0) { + ret = mbedtls_x509_csr_info( (char *) buf, sizeof( buf ) - 1, " ", &csr ); + } + mbedtls_x509_csr_free( &csr ); +#else + (void) Data; + (void) Size; +#endif + + return 0; +} diff --git a/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.options b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.options new file mode 100644 index 0000000..0824b19 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/fuzz_x509csr.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65535 diff --git a/lib/mbedtls-2.27.0/programs/fuzz/onefile.c b/lib/mbedtls-2.27.0/programs/fuzz/onefile.c new file mode 100644 index 0000000..c845149 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/fuzz/onefile.c @@ -0,0 +1,60 @@ +#include <stdint.h> +#include <stdlib.h> +#include <stdio.h> + +/* This file doesn't use any Mbed TLS function, but grab config.h anyway + * in case it contains platform-specific #defines related to malloc or + * stdio functions. */ +#if !defined(MBEDTLS_CONFIG_FILE) +#include "mbedtls/config.h" +#else +#include MBEDTLS_CONFIG_FILE +#endif + +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size); + +int main(int argc, char** argv) +{ + FILE * fp; + uint8_t *Data; + size_t Size; + + if (argc != 2) { + return 1; + } + //opens the file, get its size, and reads it into a buffer + fp = fopen(argv[1], "rb"); + if (fp == NULL) { + return 2; + } + if (fseek(fp, 0L, SEEK_END) != 0) { + fclose(fp); + return 2; + } + Size = ftell(fp); + if (Size == (size_t) -1) { + fclose(fp); + return 2; + } + if (fseek(fp, 0L, SEEK_SET) != 0) { + fclose(fp); + return 2; + } + Data = malloc(Size); + if (Data == NULL) { + fclose(fp); + return 2; + } + if (fread(Data, Size, 1, fp) != 1) { + free(Data); + fclose(fp); + return 2; + } + + //lauch fuzzer + LLVMFuzzerTestOneInput(Data, Size); + free(Data); + fclose(fp); + return 0; +} + |