1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* (C) 2015,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "fuzzers.h"
#include <botan/tls_server.h>
#include <botan/data_src.h>
const char* fixed_rsa_key =
"-----BEGIN PRIVATE KEY-----\n"
"MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCe6qqpMQVJ7zCJ\n"
"oSnpxia0yO6M7Ie3FGqPcd0DzueC+kWPvuHQ+PpP5vfO6qqRaDVII37PFX5NUZQm\n"
"GK/rAm7spjIHTCMgqSZ8pN13LU8m1gDwIdu9al16LXN9zZjB67uLlFn2trtLi234\n"
"i0cnyeF8IC0cz7tgCOzMSVEBcqJjkdgGrZ3WUgOXecVm2lXVrYlEiaSxFp4VOE9k\n"
"RFeVrELCjmNtc4hRd1yJsF+vObCtvyqGYQE1Qcb0MVSQDBHMkiUVmO6zuW7td5ef\n"
"O/1OyntQJGyVa+SnWbkSLCybta2J7MreHENrF5GA0K1KL140SNRHeWifRMuNQua7\n"
"qmKXMBTFAgMBAAECggEAIk3fxyQI0zvpy1vZ01ft1QqmzA7nAPNMSWi33/GS8iga\n"
"SfxXfKeySPs/tQ/dAARxs//NiOBH4mLgyxR7LQzaawU5OXALCSraXv+ruuUx990s\n"
"WKnGaG4EfbJAAwEVn47Gbkv425P4fEc91vAhzQn8PbIoatbAyOtESpjs/pYDTeC/\n"
"mnJId8gqO90cqyRECEMjk9sQ8iEjWPlik4ayGlUVbeeMu6/pJ9F8IZEgkLZiNDAB\n"
"4anmOFaT7EmqUjI4IlcaqfbbXyDXlvWUYukidEss+CNvPuqbQHBDnpFVvBxdDR2N\n"
"Uj2D5Xd5blcIe2/+1IVRnznjoQ5zvutzb7ThBmMehQKBgQDOITKG0ht2kXLxjVoR\n"
"r/pVpx+f3hs3H7wE0+vrLHoQgkVjpMWXQ47YuZTT9rCOOYNI2cMoH2D27t1j78/B\n"
"9kGYABUVpvQQ+6amqJDI1eYI6e68TPueEDjeALfSCdmPNiI3lZZrCIK9XLpkoy8K\n"
"tGYBRRJ+JJxjj1zPXj9SGshPgwKBgQDFXUtoxY3mCStH3+0b1qxGG9r1L5goHEmd\n"
"Am8WBYDheNpL0VqPNzouhuM/ZWMGyyAs/py6aLATe+qhR1uX5vn7LVZwjCSONZ4j\n"
"7ieEEUh1BHetPI1oI5PxgokRYfVuckotqVseanI/536Er3Yf2FXNQ1/ceVp9WykX\n"
"3mYTKMhQFwKBgQDKakcXpZNaZ5IcKdZcsBZ/rdGcR5sqEnursf9lvRNQytwg8Vkn\n"
"JSxNHlBLpV/TCh8lltHRwJ6TXhUBYij+KzhWbx5FWOErHDOWTMmArqtp7W6GcoJT\n"
"wVJWjxXzp8CApYQMWVSQXpckJL7UvHohZO0WKiHyxTjde5aD++TqV2qEyQKBgBbD\n"
"jvoTpy08K4DLxCZs2Uvw1I1pIuylbpwsdrGciuP2s38BM6fHH+/T4Qwj3osfDKQD\n"
"7gHWJ1Dn/wUBHQBlRLoC3bB3iZPZfVb5lhc2gxv0GvWhQVIcoGi/vJ2DpfJKPmIL\n"
"4ZWdg3X5dm9JaZ98rVDSj5D3ckd5J0E4hp95GbmbAoGBAJJHM4O9lx60tIjw9Sf/\n"
"QmKWyUk0NLnt8DcgRMW7fVxtzPNDy9DBKGIkDdWZ2s+ForICA3C9WSxBC1EOEHGG\n"
"xkg2xKt66CeutGroP6M191mHQrRClt1VbEYzQFX21BCk5kig9i/BURyoTHtFiV+t\n"
"kbf4VLg8Vk9u/R3RU1HsYWhe\n"
"-----END PRIVATE KEY-----\n";
const char* fixed_rsa_cert =
"-----BEGIN CERTIFICATE-----\n"
"MIIDUDCCAjgCCQD7pIb1ZsoafjANBgkqhkiG9w0BAQsFADBqMQswCQYDVQQGEwJW\n"
"VDEQMA4GA1UECAwHVmVybW9udDEWMBQGA1UEBwwNVGhlIEludGVybmV0czEUMBIG\n"
"A1UECgwLTWFuZ29zIFIgVXMxGzAZBgNVBAMMEnNlcnZlci5leGFtcGxlLmNvbTAe\n"
"Fw0xNjAxMDYxNzQ3MjNaFw0yNjAxMDMxNzQ3MjNaMGoxCzAJBgNVBAYTAlZUMRAw\n"
"DgYDVQQIDAdWZXJtb250MRYwFAYDVQQHDA1UaGUgSW50ZXJuZXRzMRQwEgYDVQQK\n"
"DAtNYW5nb3MgUiBVczEbMBkGA1UEAwwSc2VydmVyLmV4YW1wbGUuY29tMIIBIjAN\n"
"BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnuqqqTEFSe8wiaEp6cYmtMjujOyH\n"
"txRqj3HdA87ngvpFj77h0Pj6T+b3zuqqkWg1SCN+zxV+TVGUJhiv6wJu7KYyB0wj\n"
"IKkmfKTddy1PJtYA8CHbvWpdei1zfc2Yweu7i5RZ9ra7S4tt+ItHJ8nhfCAtHM+7\n"
"YAjszElRAXKiY5HYBq2d1lIDl3nFZtpV1a2JRImksRaeFThPZERXlaxCwo5jbXOI\n"
"UXdcibBfrzmwrb8qhmEBNUHG9DFUkAwRzJIlFZjus7lu7XeXnzv9Tsp7UCRslWvk\n"
"p1m5Eiwsm7WtiezK3hxDaxeRgNCtSi9eNEjUR3lon0TLjULmu6pilzAUxQIDAQAB\n"
"MA0GCSqGSIb3DQEBCwUAA4IBAQA1eZGc/4V7z/E/6eG0hVkzoAZeuTcSP7WqBSx+\n"
"OP2yh0163UYjoa6nehmkKYQQ9PbYPZGzIcl+dBFyYzy6jcp0NdtzpWnTFrjl4rMq\n"
"akcQ1D0LTYjJXVP9G/vF/SvatOFeVTnQmLlLt/a8ZtRUINqejeZZPzH8ifzFW6tu\n"
"mlhTVIEKyPHpxClh5Y3ubw/mZYygekFTqMkTx3FwJxKU8J6rYGZxanWAODUIvCUo\n"
"Fxer1qC5Love3uWl3vXPLEZWZdORnExSRByzz2immBP2vX4zYZoeZRhTQ9ae1TIV\n"
"Dk02a/1AOJZdZReDbgXhlqaUx5pk/rzo4mDzvu5HSCeXmClz\n"
"-----END CERTIFICATE-----\n";
class Fuzzer_TLS_Server_Creds : public Botan::Credentials_Manager
{
public:
Fuzzer_TLS_Server_Creds()
{
Botan::DataSource_Memory cert_in(fixed_rsa_cert);
Botan::DataSource_Memory key_in(fixed_rsa_key);
m_rsa_cert.reset(new Botan::X509_Certificate(cert_in));
//m_rsa_key.reset(Botan::PKCS8::load_key(key_in, fuzzer_rng());
}
std::vector<Botan::X509_Certificate> cert_chain(
const std::vector<std::string>& algos,
const std::string& /*type*/,
const std::string& /*hostname*/) override
{
std::vector<Botan::X509_Certificate> v;
for(auto algo : algos)
{
if(algo == "RSA")
{
v.push_back(*m_rsa_cert);
break;
}
}
return v;
}
Botan::Private_Key* private_key_for(const Botan::X509_Certificate& /*cert*/,
const std::string& /*type*/,
const std::string& /*context*/) override
{
return m_rsa_key.get();
}
std::string psk_identity_hint(const std::string&, const std::string&) override { return "psk_hint"; }
std::string psk_identity(const std::string&, const std::string&, const std::string&) override { return "psk_id"; }
Botan::SymmetricKey psk(const std::string&, const std::string&, const std::string&) override
{
return Botan::SymmetricKey("AABBCCDDEEFF00112233445566778899");
}
private:
std::unique_ptr<Botan::X509_Certificate> m_rsa_cert;
std::unique_ptr<Botan::Private_Key> m_rsa_key;
};
class Fuzzer_TLS_Policy : public Botan::TLS::Policy
{
public:
std::vector<uint16_t> ciphersuite_list(Botan::TLS::Protocol_Version version,
bool have_srp) const
{
std::vector<uint16_t> ciphersuites;
for(auto&& suite : Botan::TLS::Ciphersuite::all_known_ciphersuites())
{
if(suite.valid() == false)
continue;
// Are we doing SRP?
if(!have_srp && suite.kex_method() == Botan::TLS::Kex_Algo::SRP_SHA)
continue;
if(!version.supports_aead_modes())
{
// Are we doing AEAD in a non-AEAD version?
if(suite.mac_algo() == "AEAD")
continue;
// Older (v1.0/v1.1) versions also do not support any hash but SHA-1
if(suite.mac_algo() != "SHA-1")
continue;
}
ciphersuites.push_back(suite.ciphersuite_code());
}
return ciphersuites;
}
};
class Fuzzer_TLS_Server_Callbacks : public Botan::TLS::Callbacks
{
public:
void tls_emit_data(const uint8_t[], size_t) override
{
// discard
}
void tls_record_received(uint64_t, const uint8_t[], size_t) override
{
// ignore peer data
}
void tls_alert(Botan::TLS::Alert) override
{
// ignore alert
}
bool tls_session_established(const Botan::TLS::Session&) override
{
return true; // cache it
}
std::string tls_server_choose_app_protocol(const std::vector<std::string>& client_protos) override
{
if(client_protos.size() > 1)
return client_protos[0];
else
return "fuzzy";
}
void tls_verify_cert_chain(
const std::vector<Botan::X509_Certificate>& cert_chain,
const std::vector<std::shared_ptr<const Botan::OCSP::Response>>& ocsp_responses,
const std::vector<Botan::Certificate_Store*>& trusted_roots,
Botan::Usage_Type usage,
const std::string& hostname,
const Botan::TLS::Policy& policy) override
{
try
{
// try to validate to exercise those code paths
Botan::TLS::Callbacks::tls_verify_cert_chain(cert_chain, ocsp_responses,
trusted_roots, usage, hostname, policy);
}
catch(...)
{
// ignore validation result
}
}
};
void fuzz(const uint8_t in[], size_t len)
{
if(len <= 1)
return;
Botan::TLS::Session_Manager_Noop session_manager;
Fuzzer_TLS_Policy policy;
Botan::TLS::Server_Information info("server.name", 443);
Fuzzer_TLS_Server_Creds creds;
Fuzzer_TLS_Server_Callbacks callbacks;
const bool is_datagram = in[0] & 1;
Botan::TLS::Server server(callbacks,
session_manager,
creds,
policy,
fuzzer_rng(),
is_datagram);
try
{
server.received_data(in + 1, len - 1);
}
catch(std::exception& e)
{
}
}
|
