Attacks on SAP Mobile

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Vahagn Vardanyan. ERPScan

Vahagn Vardanyan

SAP and Web application researcher

Specialist degree in information security

@vah_13

About ERPScan

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• Research team - 20 experts with experience in different areas of security

• Headquarters in Palo Alto (US) and Amsterdam (EU)

Agenda

About SAP Mobile Platform SAP Control Center SAP SQL Anywhere services SAP Mobile Server SAP Mobile Platform vulnerability Decrypt GIOP protocol XXE SAP Control Center CSRF in SMP 3.0 Cassini 1.0 SQL Anywhere BoF SAP EMR Unwired SQL injection Conclusion

SAP Mobile Platform

SMP architecture

SMP protocols

SUP 2.1.3 SUP 2.2 SMP 2.3 SMP 3.0

SMP Messaging x x x x

SMP Replication x x x x

HTTP Rest API x x x

SAP Agentry x x

SMP services

SAP Control Center

SAP SQL Anywhere services

SAP Mobile Server

SAP Control Center

• Working process: sccservice.exe

• Open ports: • 2100 (Messaging service)

• 8282/8283 ( SCC )

• 9999 (RMI)

SMP services

SAP Control Center

SAP Mobile Server

SQL Anywhere

• Version 3: 1992

………………………….

• Version 10: 2006 - renamed SQL Anywhere (high availability, intra-query parallelism, materialized views)

• Version 11: 2008 (full text search, BlackBerry support)

• Version 12: 2010 (support for spatial data)

• Version 16: April 18, 2013 - (faster synchronization and improved security)

SQL Anywhere

SMP services

SAP Control Center

SAP Mobile Server

• MobiLink

• AdminWebServices

• MlsrvWrapper

• InfoboxMultiplexer

• OBMO

• JMSBridge

SAP Mobile Server (MobiLink)

AdminWebServices

• Uses Cassini Web Server 1.0

• Listens to the local port 5100

SAP Mobile Platform vulnerabilities

Decrypting the SAP Mobile Platform GIOP protocol

• GIOP – General Inter-ORB Protocol (GIOP) is the abstract protocol by which object request brokers (ORBs) communicate

• Uses mlsrv16.exe (Mobilink) – port 2000

XXE in the SAP Mobile Platform portal page

CVE-2015-2813

XXE in the SAP Mobile Platform portal page…

• Portal URL: https://IP_ADDR:8283/scc

• web.xml & services-config.xml

C:\SAP\SCC-3_2\services\EmbeddedWebContainer\container\Jetty-7.6.2.v20120308\work\jetty-0.0.0.0-8282-scc.war-_scc-any-\webapp\WEB-INF\web.xml

<servlet-mapping>

<servlet-name>MessageBrokerServlet</servlet-

<url-pattern>/messagebroker/*</url-pattern>

</servlet-mapping>

…XXE…

C:\SAP\SCC-3_2\services\EmbeddedWebContainer\container\Jetty-7.6.2.v20120308\work\jetty-0.0.0.0-8282-scc.war-_scc-any-\webapp\WEB-INF\flex\services-config.xml

********************************

<channel-definition id="scc-http"

class="mx.messaging.channels.HTTPChannel">

<endpoint

url="http://{server.name}:{server.port}/scc/messagebroker/http"

class="flex.messaging.endpoints.HTTPEndpoint" />

</channel-definition>

********************************

1. /scc/messagebroker/amfpolling

2. /scc/messagebroker/amfsecurepolling

3. /scc/messagebroker/http

4. /scc/messagebroker/httpsecure

5. /scc/messagebroker/amflongpolling

…XXE

Read file with XXE

C:\SAP\MobilePlatform\Servers\UnwiredServer\Repository\Instance\com\sybase\sup\server\SUPServer\sup.properties

sup.imo.upa = 457ba103a46559486a81350d552a9e47fb085927eb6df0ccc79231bc3d

Decrypt sup.imo.upa

SAP Mobile Platform unauthenticated access to other servlets

• Architecture and program vulnerabilities in SAP’s J2EE engine (BlackHat USA 2011)

• web.xml files revealed hidden methods to: – Read and generate logs

Prevention

Install SAP security note 2125358 SAP Mobile Platform XXE vulnarability

CSRF in SMP 3.0

• addAdministrator

• addRepository

• removeServerLogs

• createApplication

• createBackendConnection

********************

Prevention

Install SAP security note 2114316 SAP Mobile Platform CSRF vulnarability

Cassini 1.0

AdminWebService

POST /MobileOffice/Admin.asmx/AddAdminUser HTTP/1.1

Host: 127.0.0.1

Content-Type: application/x-www-form-urlencoded

Content-Length: length

strUserName=Admin2&strActivationCode=123QWEasd&iExpirat

ionHours=100

AdminWebService

SAP SQL Anywhere Buffer Overflow/Code Execution

CVE-2015-2819

SAP SQL Anywhere BoF/Code Execution

• CVE-2008-0912 – The MobiLink server is affected by a heap overflow which happens

during the handling of strings like username, version, and remote ID (all pre-auth) which are longer than 128 bytes

• CVE-2014-9264 – Stack-based buffer overflow in the .NET Data Provider in SAP SQL

Anywhere allows remote attackers to execute arbitrary code via a crafted column alias

First PSH request

SQL Anywhere BoF

Prevention

Install SAP security note 2108161 Denial of service in SAP SQL Anywhere

SAP EMR Unwired SQL injection

CVE-2013-7096

SAP EMR Unwired SQL injection

• CVE-2013-7096 (CVSS 7.5)

• AndroidManifest.xml: <provider android:name=".providers.ModiDataDbProvider"

android:authorities="com.sap.mobi.docsprovider" />

1. content://com.sap.mobi.docsprovider/documents/offline_cat

2. content://com.sap.mobi.docsprovider/documents/offline/

3. content://com.sap.mobi.docsprovider/documents/sample

4. content://com.sap.mobi.docsprovider/documents/online

5. content://com.sap.mobi.docsprovider/documents/offline_auth

6. content://com.sap.mobi.docsprovider/documents/offline

7. content://com.sap.mobi.docsprovider/documents/online_auth

8. content://com.sap.mobi.docsprovider/documents/sample/

9. content://com.sap.mobi.docsprovider/documents/online_cat

Prevention

Install SAP security note 1864518 Security Improvements for MOB-APP-EMR-AND

Conclusion

SAP Guides

Regular security assessments

Monitoring technical security

Segregation of Duties

Security events monitoring

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Attacks on SAP Mobile

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