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SAP NetWeaver RSTXSCRP Path Traversal

SAP NetWeaver RSTXSCRP Path Traversal
Posted Nov 17, 2011
Authored by Dmitriy Chastuchin

SAP NetWeaver RSTXSCRP Report has a path traversal vulnerability that can lead to an SMB relay attack and full control of the system.

tags | advisory
MD5 | d5eea936a39a0fd1cee77686a79493b5

SAP NetWeaver RSTXSCRP Path Traversal

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[DSECRG-11-038] SAP RSTXSCRP report - smb relay vulnerability

SAP RSTXSCRP Report has path traversal vulnerability which can lead to SMB relay attack and full control on system.

Application: SAP NetWeaver
Versions Affected: SAP NetWeaver
Vendor URL: http://www.SAP.com
Bugs: Path traversal, SMBRelay
Reported: 14.03.2011
Vendor response: 16.03.2011
Date of Public Advisory: 11.11.2011
CVSS: 2.1
CVE-number:
Author: Dmitriy Chastuchin from DSecRG (research center of ERPScan)

Description
***********
SAP RSTXSCRP Report has path traversal vulnerability which can lead to SMB relay attack and full control on system.
Details
*******
Using transaction "sa38" and report "RSTXSCRP" attacker can insert malicious UNC path in "File Name" field and chose radio button "From/on application server"
For successful SMB Relay attack realization attacker should enforce to initiate SMB session on attacker server via UNC path request. SMB client will try to access a remote SMB service on an attacker's machine.

Example:
******
Working exploit is available in commercial scanner ERPScan Security Scanner for SAP (http://erpscan.com)

References
**********
http://erpscan.com/advisories/dsecrg-11-038-sap-rstxscrp-report-smb-relay-vulnerability/
http://www.sdn.sap.com/irj/sdn/index?rid=/webcontent/uuid/c05604f6-4eb3-2d10-eea7-ceb666083a6a
https://service.sap.com/sap/support/notes/1583286




Fix Information
*************
Solution to this issue is given in the SAP Security Note 1583286.


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


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