exploit the possibilities

SAP NetWeaver ABAP Authorization Bypass / SMBRelay

SAP NetWeaver ABAP Authorization Bypass / SMBRelay
Posted Nov 17, 2011
Authored by Alexey Sintsov

SAP NetWeaver ABAP suffers from authorization bypass, directory traversal, and SMBRelay vulnerabilities.

tags | advisory, vulnerability
MD5 | 924b503d275cb8007ae227956880e44d

SAP NetWeaver ABAP Authorization Bypass / SMBRelay

Change Mirror Download
[DSECRG-11-031] SAP RFC EPS_DELETE_FILE - Authorisation bypass, smbrelay

Security vulnerability was founded in sap EPS_DELETE_FILE RFC function allows attacker to delete files remotely or steal hashes of SAP server account in windows environment using SMBRelay attack.

Digital Security Research Group [DSecRG] Advisory (Internal #DSECRG-00195)

Application: SAP NetWeaver ABAP
Versions Affected: SAP NetWeaver ABAP
Vendor URL: www.sap.com
Bugs: Auth bypass, directory traversal, smbrelay
Exploits: YES
Reported: 15.01.2011
Vendor response: 25.01.2011
Date of Public Advisory:22.08.2011
Author: Alexey Sintsov from DSecRG (ERPScan subdivision)


Security vulnerability was founded in sap EPS_DELETE_FILE RFC function allows attacker to delete files remotely or steal hashes of SAP server account in windows environment using SMBRelay attack.

Attacker that can execute function EPS_DELETE_FILE remotely using default SAP accounts like TMSADM or SAPCPIC to delete any file in OS or send hashes of SAP account to remote host or conduct smbrelay attack.

Working exploit will be available in commercial scanner ERPScan Security Scanner for SAP (http://erpscan.com) and also in ERPScan pentesting tool.


Fix Information
Solution to this issue is given in the SAP Security Note 1554030.

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

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

Polyakov Alexander
Head of DSecRG
phone: +7 812 703 1547
+7 812 430 9130
e-mail: a.polyakov@erpscan.com


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