[DSECRG-11-040] SAP NetWeaver SPML - XML CSRF user creation

[Alexandr Polyakov <alexandr.polyakov () dsec ru>]

[DSECRG-11-040] SAP NetWeaver SPML - XML CSRF user creation 

Attacker can create a new user in J2EE Engine using CSRF attack on SPML service. 

Application:     SAP NetWeaver 
Versions Affected:       SAP NetWeaver 
Vendor URL:      http://www.SAP.com
Bugs:    CSRF
Reported:        14.03.2011
Vendor response:         15.03.2011
Date of Public Advisory:        11.11.2011
CVSS:    7.3
CVE-number: 
Author:  Alexandr Polyakov from DSecRG (research center of ERPScan)

Description
***********
Attacker can create a new user in J2EE Engine using CSRF attack on SPML service
Details
*******
SPML service can be used to make various actions including user management, role management etc.
Attacker can generate HTTP page with XML call to SPML service and send a link to administrator.
Example:
******
Working exploit is available in commercial scanner ERPScan Security Scanner for SAP (http://erpscan.com)

References
**********
http://erpscan.com/advisories/dsecrg-11-040-sap-netweaver-spml-xml-csrf-user-creation/
http://www.sdn.sap.com/irj/sdn/index?rid=/webcontent/uuid/c05604f6-4eb3-2d10-eea7-ceb666083a6a
https://service.sap.com/sap/support/notes/1616058
http://erpscan.com/wp-content/uploads/2011/08/A-crushing-blow-at-the-heart-SAP-J2EE-engine_whitepaper.pdf





Fix Information
*************
Solution to this issue is given in the SAP Security Note 1616058


About DSecRG
*******
The main mission of DSecRG is to conduct researches of business critical systems such as ERP, CRM, SRM, BI, SCADA, 
banking software and others. The result of this work is then integrates in ERPScan Security Scanner. Being on the top 
edge of ERP and SAP security DSecRG research helps to improve a quality of ERPScan consulting services and protects you 
from the latest threads. 
Contact: research [at] dsecrg [dot] com
http://www.dsecrg.com 

About ERPScan
*******
ERPScan is an innovative company engaged in the research of ERP security and develops products for ERP system security 
assessment. Apart from this the company renders consulting services for secure configuration, development and 
implementation of ERP systems, and conducts comprehensive assessments and penetration testing of custom solutions.
Our flagship products are "ERPScan Security Scanner for SAP" and service "ERPScan Online" which can help customers to 
perform automated security assessments and compliance checks for SAP solutions.

Contact: info [at] erpscan [dot] com
http://www.erpscan.com 






Polyakov Alexander
CTO ERPScan
Head of DSecRG
______________________
phone:  +7 812 703 1547
        +7 812 430 9130
e-mail: a.polyakov () erpscan com

www.erpscan.com
www.dsecrg.com


-----------------------------------
This message and any attachment are confidential and may be privileged or otherwise protected 
from disclosure. If you are not the intended recipient any use, distribution, copying or disclosure 
is strictly prohibited. If you have received this message in error, please notify the sender immediately 
either by telephone or by e-mail and delete this message and any attachment from your system. Correspondence 
via e-mail is for information purposes only. Digital Security neither makes nor accepts legally binding 
statements by e-mail unless otherwise agreed. 
-----------------------------------