Fuzz introspector: TestFuzzCryptoCertificateDataSetPEM
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
33 178 WLog_ConsoleAppender_New call site: 00178 WLog_FileAppender_New
16 123 NtCurrentTeb call site: 00123 GetEnvironmentVariableA
15 56 WLog_Print_dbg_tag call site: 00056 WLog_PrintTextMessage
14 40 EnterCriticalSection call site: 00040 winpr_log_backtrace_ex
14 220 WLog_ParseFilters call site: 00220 WLog_AddStringLogFilters_int
7 80 EnterCriticalSection call site: 00080 log_recursion
7 166 WLog_InitializeRoot call site: 00166 GetEnvironmentVariableA
6 21 WLog_IsLevelActive call site: 00021 WLog_GetFilterLogLevel
5 91 InterlockedDecrement call site: 00091 UnWaitCriticalSection
4 75 GetCurrentThreadId call site: 00075 WaitForCriticalSection
4 159 WLog_AddChild call site: 00159 WLog_Free
3 250 extract_chain_from_pem call site: 00250 OPENSSL_sk_new_null

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 calloc [call site] 00001
1 freerdp_certificate_data_new_from_pem [function] [call site] 00002
2 freerdp_certificate_new_from_pem [function] [call site] 00003
3 freerdp_certificate_new_from [function] [call site] 00004
4 strlen [call site] 00005
4 x509_utils_from_pem [function] [call site] 00006
5 BIO_new_file [call site] 00007
5 BIO_new_mem_buf [call site] 00008
5 WLog_Print_dbg_tag [function] [call site] 00009
6 WLog_Get [function] [call site] 00010
7 WLog_GetRoot [function] [call site] 00011
8 winpr_InitOnceExecuteOnce [function] [call site] 00012
9 InterlockedCompareExchangePointer [function] [call site] 00013
10 winpr_int_assert [function] [call site] 00014
11 WLog_Get [function] [call site] 00015
12 WLog_Get_int [function] [call site] 00016
13 WLog_FindChild [function] [call site] 00017
14 WLog_Lock [function] [call site] 00018
15 winpr_int_assert [function] [call site] 00019
16 WLog_IsLevelActive [function] [call site] 00020
17 WLog_GetLogLevel [function] [call site] 00021
18 WLog_GetFilterLogLevel [function] [call site] 00022
19 _stricmp [function] [call site] 00023
20 strcasecmp [call site] 00024
19 __assert_fail [call site] 00025
19 _stricmp [function] [call site] 00026
19 __assert_fail [call site] 00027
18 WLog_GetLogLevel [function] [call site] 00028
16 WLog_PrintTextMessage [function] [call site] 00029
17 WLog_PrintTextMessageVA [function] [call site] 00030
18 WLog_PrintTextMessageInternal [function] [call site] 00031
19 __assert_fail [call site] 00032
19 vsnprintf [call site] 00033
19 WLog_Write [function] [call site] 00034
20 WLog_GetLogAppender [function] [call site] 00035
21 WLog_GetLogAppender [function] [call site] 00036
20 WLog_OpenAppender [function] [call site] 00037
21 WLog_GetLogAppender [function] [call site] 00038
20 EnterCriticalSection [function] [call site] 00039
21 winpr_int_assert [function] [call site] 00040
22 winpr_log_backtrace_ex [function] [call site] 00041
23 winpr_backtrace [function] [call site] 00042
24 winpr_unwind_backtrace [function] [call site] 00043
25 calloc [call site] 00044
25 calloc [call site] 00045
25 _Unwind_Backtrace [call site] 00046
25 unwind_backtrace_callback [function] [call site] 00047
26 __assert_fail [call site] 00048
26 _Unwind_GetIP [call site] 00049
26 _Unwind_GetLanguageSpecificData [call site] 00050
25 unwind_reason_str_buffer [function] [call site] 00051
26 unwind_reason_str [function] [call site] 00052
26 snprintf [call site] 00053
25 WLog_Print_dbg_tag [function] [call site] 00054
26 WLog_IsLevelActive [function] [call site] 00055
26 WLog_PrintTextMessageVA [function] [call site] 00056
25 winpr_unwind_backtrace_free [function] [call site] 00057
23 WLog_IsLevelActive [function] [call site] 00058
23 WLog_PrintTextMessage [function] [call site] 00059
23 winpr_backtrace_symbols [function] [call site] 00060
24 WLog_Print_dbg_tag [function] [call site] 00061
24 winpr_unwind_backtrace_symbols [function] [call site] 00062
25 calloc [call site] 00063
25 dladdr [call site] 00064
25 snprintf [call site] 00065
25 snprintf [call site] 00066
23 WLog_IsLevelActive [function] [call site] 00067
23 WLog_PrintTextMessage [function] [call site] 00068
23 winpr_backtrace_free [function] [call site] 00069
24 winpr_unwind_backtrace_free [function] [call site] 00070
22 abort [call site] 00071
21 InterlockedIncrement [function] [call site] 00072
22 winpr_int_assert [function] [call site] 00073
21 GetCurrentThreadId [function] [call site] 00074
22 syscall [call site] 00075
21 WaitForCriticalSection [function] [call site] 00076
22 winpr_int_assert [function] [call site] 00077
22 winpr_int_assert [function] [call site] 00078
22 sem_wait [call site] 00079
21 GetCurrentThreadId [function] [call site] 00080
20 log_recursion [function] [call site] 00081
21 winpr_backtrace [function] [call site] 00082
21 winpr_backtrace_symbols [function] [call site] 00083
21 fprintf [call site] 00084
21 fprintf [call site] 00085
21 fprintf [call site] 00086
21 winpr_backtrace_free [function] [call site] 00087
20 LeaveCriticalSection [function] [call site] 00088
21 winpr_int_assert [function] [call site] 00089
21 InterlockedDecrement [function] [call site] 00090
22 winpr_int_assert [function] [call site] 00091
21 UnWaitCriticalSection [function] [call site] 00092
22 winpr_int_assert [function] [call site] 00093
22 winpr_int_assert [function] [call site] 00094
22 sem_post [call site] 00095
21 InterlockedDecrement [function] [call site] 00096
15 EnterCriticalSection [function] [call site] 00097
14 strcmp [call site] 00098
14 WLog_Unlock [function] [call site] 00099
15 winpr_int_assert [function] [call site] 00100
15 LeaveCriticalSection [function] [call site] 00101
13 WLog_New [function] [call site] 00102
14 calloc [call site] 00103
14 _strdup [function] [call site] 00104
15 strdup [call site] 00105
15 WLog_Print_dbg_tag [function] [call site] 00106
14 WLog_ParseName [function] [call site] 00107
15 strchr [call site] 00108
15 _strdup [function] [call site] 00109
15 calloc [call site] 00110
15 strchr [call site] 00111
14 calloc [call site] 00112
14 GetEnvironmentVariableA [function] [call site] 00113
15 getenv [call site] 00114
15 SetLastError [function] [call site] 00115
16 NtCurrentTeb [function] [call site] 00116
17 pthread_once [call site] 00117
17 sTebInitOnce [function] [call site] 00118
18 pthread_key_create [call site] 00119
18 sTebDestruct [function] [call site] 00120
17 pthread_getspecific [call site] 00121
17 calloc [call site] 00122
17 pthread_setspecific [call site] 00123
15 strlen [call site] 00124
14 GetEnvironmentVariableA [function] [call site] 00125
14 fprintf [call site] 00126
14 WLog_ParseLogLevel [function] [call site] 00127
15 _stricmp [function] [call site] 00128
15 _stricmp [function] [call site] 00129
15 _stricmp [function] [call site] 00130
15 _stricmp [function] [call site] 00131
15 _stricmp [function] [call site] 00132
15 _stricmp [function] [call site] 00133
15 _stricmp [function] [call site] 00134
14 WLog_SetLogLevel [function] [call site] 00135
15 WLog_UpdateInheritLevel [function] [call site] 00136
16 WLog_UpdateInheritLevel [function] [call site] 00137
15 WLog_reset_log_filters [function] [call site] 00138
16 WLog_reset_log_filters [function] [call site] 00139
14 WLog_GetFilterLogLevel [function] [call site] 00140
14 WLog_SetLogLevel [function] [call site] 00141
14 InitializeCriticalSectionAndSpinCount [function] [call site] 00142
15 InitializeCriticalSectionEx [function] [call site] 00143
16 winpr_int_assert [function] [call site] 00144
16 WLog_Print_dbg_tag [function] [call site] 00145
16 sem_init [call site] 00146
16 SetCriticalSectionSpinCount [function] [call site] 00147
17 winpr_int_assert [function] [call site] 00148
14 WLog_Free [function] [call site] 00149
15 WLog_Appender_Free [function] [call site] 00150
16 WLog_Layout_Free [function] [call site] 00151
16 DeleteCriticalSection [function] [call site] 00152
17 winpr_int_assert [function] [call site] 00153
17 sem_destroy [call site] 00154
15 DeleteCriticalSection [function] [call site] 00155
13 WLog_AddChild [function] [call site] 00156
14 WLog_Lock [function] [call site] 00157
14 realloc [call site] 00158
14 WLog_Unlock [function] [call site] 00159
13 WLog_Free [function] [call site] 00160
9 WLog_Print_dbg_tag [function] [call site] 00161
9 Sleep [function] [call site] 00162
10 usleep [call site] 00163
8 WLog_InitializeRoot [function] [call site] 00164
9 WLog_New [function] [call site] 00165
9 GetEnvironmentVariableA [function] [call site] 00166
9 GetEnvironmentVariableA [function] [call site] 00167
9 fprintf [call site] 00168
9 _stricmp [function] [call site] 00169
9 _stricmp [function] [call site] 00170
9 _stricmp [function] [call site] 00171
9 _stricmp [function] [call site] 00172
9 _stricmp [function] [call site] 00173
9 WLog_SetLogAppenderType [function] [call site] 00174
10 WLog_Appender_Free [function] [call site] 00175
10 WLog_Appender_New [function] [call site] 00176
11 WLog_ConsoleAppender_New [function] [call site] 00177
12 calloc [call site] 00178
11 WLog_FileAppender_New [function] [call site] 00179
12 calloc [call site] 00180
12 GetEnvironmentVariableA [function] [call site] 00181
12 GetEnvironmentVariableA [function] [call site] 00182
12 WLog_FileAppender_SetOutputFilePath [function] [call site] 00183
13 _strdup [function] [call site] 00184
12 GetEnvironmentVariableA [function] [call site] 00185
12 GetEnvironmentVariableA [function] [call site] 00186
12 WLog_FileAppender_SetOutputFileName [function] [call site] 00187
13 _strdup [function] [call site] 00188
11 WLog_BinaryAppender_New [function] [call site] 00189
12 calloc [call site] 00190
11 WLog_CallbackAppender_New [function] [call site] 00191
12 calloc [call site] 00192
11 WLog_SyslogAppender_New [function] [call site] 00193
12 calloc [call site] 00194
11 WLog_UdpAppender_New [function] [call site] 00195
12 calloc [call site] 00196
12 _socket [function] [call site] 00197
13 socket [call site] 00198
12 GetEnvironmentVariableA [function] [call site] 00199
12 GetEnvironmentVariableA [function] [call site] 00200
12 WLog_UdpAppender_Open [function] [call site] 00201
13 strchr [call site] 00202
13 winpr_int_assert [function] [call site] 00203
13 getaddrinfo [call site] 00204
13 freeaddrinfo [call site] 00205
13 freeaddrinfo [call site] 00206
12 _strdup [function] [call site] 00207
12 closesocket [function] [call site] 00208
13 close [call site] 00209
11 fprintf [call site] 00210
11 WLog_ConsoleAppender_New [function] [call site] 00211
11 WLog_Layout_New [function] [call site] 00212
12 calloc [call site] 00213
12 GetEnvironmentVariableA [function] [call site] 00214
12 GetEnvironmentVariableA [function] [call site] 00215
12 _strdup [function] [call site] 00216
11 WLog_Appender_Free [function] [call site] 00217
11 InitializeCriticalSectionAndSpinCount [function] [call site] 00218
9 WLog_ParseFilters [function] [call site] 00219
10 GetEnvironmentVariableA [function] [call site] 00220
10 GetEnvironmentVariableA [function] [call site] 00221
10 WLog_AddStringLogFilters_int [function] [call site] 00222
11 strchr [call site] 00223
11 realloc [call site] 00224
11 _strdup [function] [call site] 00225
11 strchr [call site] 00226
11 WLog_ParseFilter [function] [call site] 00227
12 strchr [call site] 00228
12 _strdup [function] [call site] 00229
12 calloc [call site] 00230
12 strrchr [call site] 00231
12 WLog_ParseLogLevel [function] [call site] 00232
12 strchr [call site] 00233
11 WLog_reset_log_filters [function] [call site] 00234
9 atexit [call site] 00235
9 WLog_Uninit_ [function] [call site] 00236
10 WLog_Free [function] [call site] 00237
10 WLog_Free [function] [call site] 00238
9 WLog_Uninit_ [function] [call site] 00239
5 PEM_read_bio_X509 [call site] 00240
5 BIO_free_all [call site] 00241
5 WLog_Print_dbg_tag [function] [call site] 00242
4 extract_chain_from_pem [function] [call site] 00243
5 BIO_new_file [call site] 00244
5 strlen [call site] 00245
5 winpr_int_assert [function] [call site] 00246
5 BIO_new_mem_buf [call site] 00247
5 PEM_read_bio_X509 [call site] 00248
5 BIO_free [call site] 00249
5 sk_X509_new_null [function] [call site] 00250
6 OPENSSL_sk_new_null [call site] 00251
5 X509_free [call site] 00252
5 BIO_free [call site] 00253
5 PEM_read_bio_X509 [call site] 00254
5 sk_X509_push [function] [call site] 00255
6 OPENSSL_sk_push [call site] 00256
5 X509_free [call site] 00257
5 BIO_free [call site] 00258
4 freerdp_certificate_new_from_x509 [function] [call site] 00259
5 winpr_int_assert [function] [call site] 00260
5 freerdp_certificate_new [function] [call site] 00261
6 calloc [call site] 00262
5 X509_dup [call site] 00263
5 freerdp_rsa_from_x509 [function] [call site] 00264
6 winpr_int_assert [function] [call site] 00265
6 freerdp_certificate_is_rsa [function] [call site] 00266
7 winpr_int_assert [function] [call site] 00267
7 is_rsa_key [function] [call site] 00268
8 X509_get0_pubkey [call site] 00269
8 EVP_PKEY_id [call site] 00270
6 X509_get0_pubkey [call site] 00271
6 EVP_PKEY_get1_RSA [call site] 00272
6 RSA_get0_key [call site] 00273
6 cert_info_create [function] [call site] 00274
7 winpr_int_assert [function] [call site] 00275
7 winpr_int_assert [function] [call site] 00276
7 read_bignum [function] [call site] 00277
8 winpr_int_assert [function] [call site] 00278
8 winpr_int_assert [function] [call site] 00279
8 winpr_int_assert [function] [call site] 00280
8 BN_num_bits [call site] 00281
8 BN_bn2bin [call site] 00282
8 crypto_reverse [function] [call site] 00283
7 read_bignum [function] [call site] 00284
7 cert_info_free [function] [call site] 00285
8 winpr_int_assert [function] [call site] 00286
6 RSA_free [call site] 00287
5 sk_X509_deep_copy [function] [call site] 00288
6 OPENSSL_sk_deep_copy [call site] 00289
5 X509_const_dup [function] [call site] 00290
6 X509_dup [call site] 00291
5 X509_free [call site] 00292
5 freerdp_certificate_free [function] [call site] 00293
6 certificate_free_int [function] [call site] 00294
7 winpr_int_assert [function] [call site] 00295
7 X509_free [call site] 00296
7 sk_X509_pop_free [function] [call site] 00297
8 OPENSSL_sk_pop_free [call site] 00298
7 X509_free [call site] 00299
7 certificate_free_x509_certificate_chain [function] [call site] 00300
8 cert_blob_free [function] [call site] 00301
7 cert_info_free [function] [call site] 00302
4 sk_X509_pop_free [function] [call site] 00303
4 X509_free [call site] 00304
4 X509_free [call site] 00305
2 freerdp_certificate_data_new_nocopy [function] [call site] 00306
3 strnlen [call site] 00307
3 WLog_Print_dbg_tag [function] [call site] 00308
3 calloc [call site] 00309
3 _strdup [function] [call site] 00310
3 strlen [call site] 00311
3 ensure_lowercase [function] [call site] 00312
4 strnlen [call site] 00313
4 tolower [call site] 00314
3 freerdp_certificate_data_load_cache [function] [call site] 00315
4 freerdp_certificate_data_hash_ [function] [call site] 00316
5 snprintf [call site] 00317
5 ensure_valid_charset [function] [call site] 00318
6 strnlen [call site] 00319
5 ensure_lowercase [function] [call site] 00320
4 strnlen [call site] 00321
4 freerdp_certificate_get_subject [function] [call site] 00322
5 winpr_int_assert [function] [call site] 00323
5 x509_utils_get_subject [function] [call site] 00324
6 WLog_Print_dbg_tag [function] [call site] 00325
6 X509_get_subject_name [call site] 00326
6 crypto_print_name [function] [call site] 00327
7 BIO_s_mem [call site] 00328
7 BIO_new [call site] 00329
7 X509_NAME_print_ex [call site] 00330
7 BIO_number_written [call site] 00331
7 calloc [call site] 00332
7 ERR_clear_error [call site] 00333
7 BIO_read [call site] 00334
7 BIO_free_all [call site] 00335
6 WLog_Print_dbg_tag [function] [call site] 00336
4 calloc [call site] 00337
4 freerdp_certificate_get_pem_ex [function] [call site] 00338
5 winpr_int_assert [function] [call site] 00339
5 BIO_s_mem [call site] 00340
5 BIO_new [call site] 00341
5 WLog_Print_dbg_tag [function] [call site] 00342
5 PEM_write_bio_X509 [call site] 00343
5 WLog_Print_dbg_tag [function] [call site] 00344
5 sk_X509_num [function] [call site] 00345
6 OPENSSL_sk_num [call site] 00346
5 sk_X509_value [function] [call site] 00347
6 OPENSSL_sk_value [call site] 00348
5 PEM_write_bio_X509 [call site] 00349
5 WLog_Print_dbg_tag [function] [call site] 00350
5 bio_read_pem [function] [call site] 00351
6 winpr_int_assert [function] [call site] 00352
6 winpr_int_assert [function] [call site] 00353
6 realloc [call site] 00354
6 ERR_clear_error [call site] 00355
6 BIO_read [call site] 00356
6 WLog_Print_dbg_tag [function] [call site] 00357
5 BIO_free_all [call site] 00358
4 freerdp_certificate_get_pem_ex [function] [call site] 00359
4 freerdp_certificate_get_fingerprint [function] [call site] 00360
5 freerdp_certificate_get_fingerprint_by_hash [function] [call site] 00361
6 freerdp_certificate_get_fingerprint_by_hash_ex [function] [call site] 00362
7 WLog_Print_dbg_tag [function] [call site] 00363
7 WLog_Print_dbg_tag [function] [call site] 00364
7 x509_utils_get_hash [function] [call site] 00365
8 EVP_get_digestbyname [call site] 00366
8 WLog_Print_dbg_tag [function] [call site] 00367
8 WLog_Print_dbg_tag [function] [call site] 00368
8 calloc [call site] 00369
8 WLog_Print_dbg_tag [function] [call site] 00370
8 X509_digest [call site] 00371
7 calloc [call site] 00372
7 snprintf [call site] 00373
7 snprintf [call site] 00374
7 snprintf [call site] 00375
4 freerdp_certificate_get_issuer [function] [call site] 00376
5 winpr_int_assert [function] [call site] 00377
5 x509_utils_get_issuer [function] [call site] 00378
6 WLog_Print_dbg_tag [function] [call site] 00379
6 X509_get_issuer_name [call site] 00380
6 crypto_print_name [function] [call site] 00381
6 WLog_Print_dbg_tag [function] [call site] 00382
4 calloc [call site] 00383
3 freerdp_certificate_data_free [function] [call site] 00384
4 freerdp_certificate_free [function] [call site] 00385
2 freerdp_certificate_free [function] [call site] 00386
1 freerdp_certificate_data_free [function] [call site] 00387