Fuzz introspector: fuzz_jwt_roundtrip
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
161 65 google.auth.exceptions.GoogleAuthError.__init__ call site: {node_id} google.auth.jwt.encode
69 248 google.auth.jwt.decode call site: {node_id} google.auth.jwt.encode
25 38 google.auth.jwt.encode call site: {node_id} google.auth.iam.Signer._make_signing_request
14 2 ...fuzz_jwt_roundtrip.test_roundtrip_unverified call site: {node_id} google.auth.crypt._python_rsa.RSASigner.from_string
2 23 ...fuzz_jwt_roundtrip.test_roundtrip_unverified call site: {node_id} fdp.ConsumeString
2 26 ...fuzz_jwt_roundtrip.test_roundtrip_unverified call site: {node_id} google.auth.jwt.encode
2 32 google.auth.jwt.encode call site: {node_id} google.auth._helpers.unpadded_urlsafe_b64encode
2 35 google.auth._helpers.unpadded_urlsafe_b64encode call site: {node_id} google.auth._helpers.unpadded_urlsafe_b64encode
2 245 google.auth.jwt.decode call site: {node_id} google.auth.exceptions.GoogleAuthError.__init__
1 0 EP call site: {node_id} ...fuzz_jwt_roundtrip.test_roundtrip_unverified
1 30 google.auth.jwt.encode call site: {node_id} header.update

Fuzzer calltree

0 ...fuzz_jwt_roundtrip.TestOneInput [function] [call site] 00000
1 ...fuzz_jwt_roundtrip.test_roundtrip_unverified [function] [call site] 00001
2 atheris.FuzzedDataProvider [function] [call site] 00002
2 google.auth.crypt._python_rsa.RSASigner.from_string [function] [call site] 00003
3 google.auth._helpers.from_bytes [function] [call site] 00004
4 .isinstance [function] [call site] 00005
4 value.decode [function] [call site] 00006
4 .isinstance [function] [call site] 00007
3 pyasn1_modules.pem.readPemBlocksFromFile [function] [call site] 00008
3 six.StringIO [function] [call site] 00009
3 rsa.key.PrivateKey.load_pkcs1 [function] [call site] 00010
3 pyasn1.codec.der.decoder.decode [function] [call site] 00011
3 key_info.getComponentByName [function] [call site] 00012
3 rsa.key.PrivateKey.load_pkcs1 [function] [call site] 00013
3 private_key_info.asOctets [function] [call site] 00014
3 google.auth.crypt._python_rsa.RSASigner.__init__ [function] [call site] 00015
2 google.auth.crypt._cryptography_rsa.RSASigner.from_string [function] [call site] 00016
3 google.auth._helpers.to_bytes [function] [call site] 00017
4 .isinstance [function] [call site] 00018
4 value.encode [function] [call site] 00019
4 .isinstance [function] [call site] 00020
3 cryptography.hazmat.primitives.serialization.load_pem_private_key [function] [call site] 00021
3 google.auth.crypt._cryptography_rsa.RSASigner.__init__ [function] [call site] 00022
2 fdp.ConsumeIntInRange [function] [call site] 00023
2 fdp.ConsumeString [function] [call site] 00024
2 fdp.ConsumeIntInRange [function] [call site] 00025
2 fdp.ConsumeString [function] [call site] 00026
2 fdp.ConsumeString [function] [call site] 00027
2 google.auth.jwt.encode [function] [call site] 00028
3 header.update [function] [call site] 00029
3 .isinstance [function] [call site] 00030
3 header.update [function] [call site] 00031
3 header.update [function] [call site] 00032
3 json.dumps [function] [call site] 00033
3 google.auth._helpers.unpadded_urlsafe_b64encode [function] [call site] 00034
4 base64.urlsafe_b64encode [function] [call site] 00035
3 json.dumps [function] [call site] 00036
3 google.auth._helpers.unpadded_urlsafe_b64encode [function] [call site] 00037
3 google.auth.iam.Signer.sign [function] [call site] 00038
4 google.auth.iam.Signer._make_signing_request [function] [call site] 00039
5 google.auth._helpers.to_bytes [function] [call site] 00040
5 _SIGN_BLOB_URI.format [function] [call site] 00041
5 json.dumps [function] [call site] 00042
5 base64.b64encode [function] [call site] 00043
5 google.auth.api_key.Credentials.before_request [function] [call site] 00044
6 google.auth.api_key.Credentials.apply [function] [call site] 00045
5 google.auth.credentials.Credentials.before_request [function] [call site] 00046
6 google.auth.api_key.Credentials.refresh [function] [call site] 00047
6 google.auth.credentials.Credentials.refresh [function] [call site] 00048
6 google.auth.external_account.Credentials.refresh [function] [call site] 00049
7 google.auth.impersonated_credentials.Credentials.refresh [function] [call site] 00050
8 google.auth.impersonated_credentials.Credentials._update_token [function] [call site] 00051
9 .str [function] [call site] 00052
9 google.auth.metrics.token_request_access_token_impersonate [function] [call site] 00053
10 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00054
11 platform.python_version [function] [call site] 00055
9 google.auth.impersonated_credentials._make_iam_token_request [function] [call site] 00056
10 _IAM_ENDPOINT.format [function] [call site] 00057
10 json.dumps [function] [call site] 00058
10 response.data.decode [function] [call site] 00059
10 .hasattr [function] [call site] 00060
10 json.loads [function] [call site] 00061
10 datetime.datetime.strptime [function] [call site] 00062
10 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00063
11 .super [function] [call site] 00064
11 kwargs.get [function] [call site] 00065
10 six.raise_from [function] [call site] 00066
7 google.auth._helpers.utcnow [function] [call site] 00067
8 datetime.datetime.utcnow [function] [call site] 00068
7 google.oauth2.sts.Client.exchange_token [function] [call site] 00069
8 json.dumps [function] [call site] 00070
8 six.moves.urllib.parse.quote [function] [call site] 00071
8 .dict [function] [call site] 00072
8 google.oauth2.sts.Client._make_request [function] [call site] 00073
9 _URLENCODED_HEADERS.copy [function] [call site] 00074
9 .dict [function] [call site] 00075
9 google.oauth2.utils.OAuthClientAuthHandler.apply_client_authentication_options [function] [call site] 00076
10 google.oauth2.utils.OAuthClientAuthHandler._inject_authenticated_headers [function] [call site] 00077
11 base64.b64encode [function] [call site] 00078
10 google.oauth2.utils.OAuthClientAuthHandler._inject_authenticated_request_body [function] [call site] 00079
9 six.moves.urllib.parse.urlencode [function] [call site] 00080
9 response.data.decode [function] [call site] 00081
9 .hasattr [function] [call site] 00082
9 google.oauth2.utils.handle_error_response [function] [call site] 00083
10 json.loads [function] [call site] 00084
10 error_components.append [function] [call site] 00085
10 error_components.append [function] [call site] 00086
10 error_components.append [function] [call site] 00087
9 json.loads [function] [call site] 00088
7 google.auth.external_account.Credentials.retrieve_subject_token [function] [call site] 00089
7 response_data.get [function] [call site] 00090
7 response_data.get [function] [call site] 00091
7 datetime.timedelta [function] [call site] 00092
6 google.oauth2.gdch_credentials.ServiceAccountCredentials.refresh [function] [call site] 00093
7 .isinstance [function] [call site] 00094
7 google.oauth2.gdch_credentials.ServiceAccountCredentials._create_jwt [function] [call site] 00095
8 google.auth._helpers.utcnow [function] [call site] 00096
8 google.auth._helpers.datetime_to_secs [function] [call site] 00097
9 value.utctimetuple [function] [call site] 00098
9 calendar.timegm [function] [call site] 00099
8 google.auth._helpers.datetime_to_secs [function] [call site] 00100
8 google.auth.jwt.encode [function] [call site] 00101
8 google.auth._helpers.from_bytes [function] [call site] 00102
7 google.oauth2._client._token_endpoint_request [function] [call site] 00103
8 google.oauth2._client._token_endpoint_request_no_throw [function] [call site] 00104
9 google.auth._exponential_backoff.ExponentialBackoff.__iter__ [function] [call site] 00105
9 google.auth._exponential_backoff.ExponentialBackoff.__next__ [function] [call site] 00106
10 random.uniform [function] [call site] 00107
10 time.sleep [function] [call site] 00108
9 json.dumps [function] [call site] 00109
9 six.moves.urllib.parse.urlencode [function] [call site] 00110
9 headers_to_use.update [function] [call site] 00111
9 google.oauth2._client._token_endpoint_request_no_throw._perform_request [function] [call site] 00112
10 response.data.decode [function] [call site] 00113
10 .hasattr [function] [call site] 00114
10 json.loads [function] [call site] 00115
10 google.oauth2._client._can_retry [function] [call site] 00116
11 response_data.get [function] [call site] 00117
11 response_data.get [function] [call site] 00118
11 .isinstance [function] [call site] 00119
11 .isinstance [function] [call site] 00120
11 .any [function] [call site] 00121
9 google.auth._exponential_backoff.ExponentialBackoff.__init__ [function] [call site] 00122
9 google.oauth2._client._token_endpoint_request_no_throw._perform_request [function] [call site] 00123
8 google.oauth2._client._handle_error_response [function] [call site] 00124
9 .isinstance [function] [call site] 00125
9 response_data.get [function] [call site] 00126
9 json.dumps [function] [call site] 00127
7 google.oauth2._client._handle_refresh_grant_response [function] [call site] 00128
8 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00129
8 six.raise_from [function] [call site] 00130
8 response_data.get [function] [call site] 00131
8 google.oauth2._client._parse_expiry [function] [call site] 00132
9 response_data.get [function] [call site] 00133
9 .isinstance [function] [call site] 00134
9 .int [function] [call site] 00135
9 google.auth._helpers.utcnow [function] [call site] 00136
9 datetime.timedelta [function] [call site] 00137
6 google.auth.app_engine.Credentials.refresh [function] [call site] 00138
7 google.appengine.api.app_identity.get_access_token [function] [call site] 00139
7 datetime.datetime.utcfromtimestamp [function] [call site] 00140
6 google.oauth2.credentials.Credentials.refresh [function] [call site] 00141
7 google.oauth2.credentials.Credentials.refresh_handler [function] [call site] 00142
8 .callable [function] [call site] 00143
7 .isinstance [function] [call site] 00144
7 .isinstance [function] [call site] 00145
7 google.auth._helpers.utcnow [function] [call site] 00146
7 google.oauth2.reauth.refresh_grant [function] [call site] 00147
8 google.auth.metrics.token_request_user [function] [call site] 00148
9 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00149
8 google.oauth2._client._token_endpoint_request_no_throw [function] [call site] 00150
8 .isinstance [function] [call site] 00151
8 response_data.get [function] [call site] 00152
8 response_data.get [function] [call site] 00153
8 response_data.get [function] [call site] 00154
8 google.oauth2.reauth.get_rapt_token [function] [call site] 00155
9 sys.stderr.write [function] [call site] 00156
9 google.oauth2._client.refresh_grant [function] [call site] 00157
10 google.oauth2._client._token_endpoint_request [function] [call site] 00158
10 google.oauth2._client._handle_refresh_grant_response [function] [call site] 00159
9 google.oauth2.reauth._obtain_rapt [function] [call site] 00160
10 google.oauth2.reauth._get_challenges [function] [call site] 00161
11 google.auth.metrics.reauth_start [function] [call site] 00162
12 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00163
11 google.oauth2._client._token_endpoint_request [function] [call site] 00164
10 challenges.AVAILABLE_CHALLENGES.keys [function] [call site] 00165
10 .list [function] [call site] 00166
10 six.moves.range [function] [call site] 00167
10 google.oauth2.reauth.is_interactive [function] [call site] 00168
11 sys.stdin.isatty [function] [call site] 00169
10 google.oauth2.reauth._run_next_challenge [function] [call site] 00170
11 challenges.AVAILABLE_CHALLENGES.get [function] [call site] 00171
11 c.obtain_challenge_input [function] [call site] 00172
11 google.oauth2.reauth._send_challenge_result [function] [call site] 00173
12 google.auth.metrics.reauth_continue [function] [call site] 00174
13 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00175
12 google.oauth2._client._token_endpoint_request [function] [call site] 00176
8 google.oauth2._client._token_endpoint_request_no_throw [function] [call site] 00177
8 google.oauth2._client._handle_error_response [function] [call site] 00178
8 google.oauth2._client._handle_refresh_grant_response [function] [call site] 00179
7 grant_response.get [function] [call site] 00180
7 .frozenset [function] [call site] 00181
7 .frozenset [function] [call site] 00182
7 _LOGGER.warning [function] [call site] 00183
6 google.auth.compute_engine.credentials.Credentials.refresh [function] [call site] 00184
7 google.auth.compute_engine.credentials.Credentials._retrieve_info [function] [call site] 00185
8 google.auth.compute_engine._metadata.get_service_account_info [function] [call site] 00186
9 google.auth.compute_engine._metadata.get [function] [call site] 00187
10 six.moves.urllib.parse.urljoin [function] [call site] 00188
10 _METADATA_HEADERS.copy [function] [call site] 00189
10 headers_to_use.update [function] [call site] 00190
10 google.auth._helpers.update_query [function] [call site] 00191
11 six.moves.urllib.parse.urlparse [function] [call site] 00192
11 six.moves.urllib.parse.parse_qs [function] [call site] 00193
11 query_params.update [function] [call site] 00194
11 six.iteritems [function] [call site] 00195
11 six.moves.urllib.parse.urlencode [function] [call site] 00196
11 parts._replace [function] [call site] 00197
11 six.moves.urllib.parse.urlunparse [function] [call site] 00198
10 _LOGGER.warning [function] [call site] 00199
10 google.auth._helpers.from_bytes [function] [call site] 00200
10 json.loads [function] [call site] 00201
10 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00202
10 six.raise_from [function] [call site] 00203
7 google.auth.compute_engine._metadata.get_service_account_token [function] [call site] 00204
8 .isinstance [function] [call site] 00205
8 google.auth.metrics.token_request_access_token_mds [function] [call site] 00206
9 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00207
8 google.auth.compute_engine._metadata.get [function] [call site] 00208
8 google.auth._helpers.utcnow [function] [call site] 00209
8 datetime.timedelta [function] [call site] 00210
7 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00211
7 six.raise_from [function] [call site] 00212
6 google.oauth2.service_account.IDTokenCredentials.refresh [function] [call site] 00213
7 google.oauth2.service_account.IDTokenCredentials._refresh_with_iam_endpoint [function] [call site] 00214
8 google.auth.jwt.Credentials.from_signing_credentials [function] [call site] 00215
9 kwargs.setdefault [function] [call site] 00216
9 kwargs.setdefault [function] [call site] 00217
9 google.auth.jwt.Credentials.__init__ [function] [call site] 00218
10 .super [function] [call site] 00219
8 jwt_credentials.refresh [function] [call site] 00220
8 google.oauth2._client.call_iam_generate_id_token_endpoint [function] [call site] 00221
9 google.oauth2._client._token_endpoint_request [function] [call site] 00222
9 _IAM_IDTOKEN_ENDPOINT.format [function] [call site] 00223
9 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00224
9 six.raise_from [function] [call site] 00225
9 google.auth.jwt.decode [function] [call site] 00226
10 google.auth.jwt._unverified_decode [function] [call site] 00227
11 google.auth._helpers.to_bytes [function] [call site] 00228
11 token.count [function] [call site] 00229
11 token.split [function] [call site] 00230
11 google.auth._helpers.padded_urlsafe_b64decode [function] [call site] 00231
12 google.auth._helpers.to_bytes [function] [call site] 00232
12 .len [function] [call site] 00233
12 base64.urlsafe_b64decode [function] [call site] 00234
11 google.auth.jwt._decode_jwt_segment [function] [call site] 00235
12 google.auth._helpers.padded_urlsafe_b64decode [function] [call site] 00236
12 section_bytes.decode [function] [call site] 00237
12 json.loads [function] [call site] 00238
12 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00239
12 six.raise_from [function] [call site] 00240
11 google.auth.jwt._decode_jwt_segment [function] [call site] 00241
11 .isinstance [function] [call site] 00242
11 .isinstance [function] [call site] 00243
10 header.get [function] [call site] 00244
10 header.get [function] [call site] 00245
10 six.raise_from [function] [call site] 00246
10 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00247
10 six.raise_from [function] [call site] 00248
10 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00249
10 .isinstance [function] [call site] 00250
10 certs.values [function] [call site] 00251
10 google.auth.crypt.verify_signature [function] [call site] 00252
11 .isinstance [function] [call site] 00253
11 verifier_cls.from_string [function] [call site] 00254
11 verifier.verify [function] [call site] 00255
10 google.auth.jwt._verify_iat_and_exp [function] [call site] 00256
11 google.auth._helpers.utcnow [function] [call site] 00257
11 google.auth._helpers.datetime_to_secs [function] [call site] 00258
10 payload.get [function] [call site] 00259
10 .isinstance [function] [call site] 00260
9 datetime.datetime.utcfromtimestamp [function] [call site] 00261
8 jwt_credentials.token.decode [function] [call site] 00262
7 google.oauth2.service_account.IDTokenCredentials._make_authorization_grant_assertion [function] [call site] 00263
8 google.auth._helpers.utcnow [function] [call site] 00264
8 datetime.timedelta [function] [call site] 00265
8 google.auth._helpers.datetime_to_secs [function] [call site] 00266
8 google.auth._helpers.datetime_to_secs [function] [call site] 00267
8 payload.update [function] [call site] 00268
8 google.auth.jwt.encode [function] [call site] 00269
7 google.oauth2._client.id_token_jwt_grant [function] [call site] 00270
8 google.oauth2._client._token_endpoint_request [function] [call site] 00271
8 google.auth.metrics.token_request_id_token_sa_assertion [function] [call site] 00272
9 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00273
8 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00274
8 six.raise_from [function] [call site] 00275
8 google.auth.jwt.decode [function] [call site] 00276
8 datetime.datetime.utcfromtimestamp [function] [call site] 00277
6 google.auth.impersonated_credentials.Credentials.refresh [function] [call site] 00278
6 google.oauth2.service_account.Credentials.refresh [function] [call site] 00279
7 google.oauth2.service_account.Credentials._use_self_signed_jwt [function] [call site] 00280
7 google.oauth2.service_account.Credentials._make_authorization_grant_assertion [function] [call site] 00281
8 google.auth._helpers.utcnow [function] [call site] 00282
8 datetime.timedelta [function] [call site] 00283
8 google.auth._helpers.datetime_to_secs [function] [call site] 00284
8 google.auth._helpers.datetime_to_secs [function] [call site] 00285
8 google.auth._helpers.scopes_to_string [function] [call site] 00286
8 payload.update [function] [call site] 00287
8 payload.setdefault [function] [call site] 00288
8 google.auth.jwt.encode [function] [call site] 00289
7 google.oauth2._client.jwt_grant [function] [call site] 00290
8 google.oauth2._client._token_endpoint_request [function] [call site] 00291
8 google.auth.metrics.token_request_access_token_sa_assertion [function] [call site] 00292
9 google.auth.metrics.python_and_auth_lib_version [function] [call site] 00293
8 google.auth.exceptions.GoogleAuthError.__init__ [function] [call site] 00294
8 six.raise_from [function] [call site] 00295
8 google.oauth2._client._parse_expiry [function] [call site] 00296
6 google.auth.external_account_authorized_user.Credentials.refresh [function] [call site] 00297
7 google.auth._helpers.utcnow [function] [call site] 00298
7 google.auth.external_account_authorized_user.Credentials._make_sts_request [function] [call site] 00299
8 google.oauth2.sts.Client.refresh_token [function] [call site] 00300
9 google.oauth2.sts.Client._make_request [function] [call site] 00301
7 response_data.get [function] [call site] 00302
7 response_data.get [function] [call site] 00303
7 datetime.timedelta [function] [call site] 00304
6 google.oauth2.service_account.Credentials._metric_header_for_usage [function] [call site] 00305
7 google.oauth2.service_account.Credentials._use_self_signed_jwt [function] [call site] 00306
6 google.auth.compute_engine.credentials.Credentials._metric_header_for_usage [function] [call site] 00307
6 google.auth.impersonated_credentials.Credentials._metric_header_for_usage [function] [call site] 00308
6 google.oauth2.credentials.Credentials._metric_header_for_usage [function] [call site] 00309
6 google.auth.credentials.Credentials._metric_header_for_usage [function] [call site] 00310
6 google.auth.metrics.add_metric_header [function] [call site] 00311
6 google.auth.api_key.Credentials.apply [function] [call site] 00312
6 google.auth.credentials.Credentials.apply [function] [call site] 00313
7 google.auth._helpers.from_bytes [function] [call site] 00314
5 response.data.decode [function] [call site] 00315
5 json.loads [function] [call site] 00316
4 base64.b64decode [function] [call site] 00317
3 google.auth._helpers.unpadded_urlsafe_b64encode [function] [call site] 00318
3 segments.append [function] [call site] 00319
2 google.auth.jwt.decode [function] [call site] 00320