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CYBSEC-saprfcstart.txt

CYBSEC-saprfcstart.txt
Posted Apr 5, 2007
Authored by Mariano Nunez Di Croce | Site cybsec.com

CYBSEC Security Advisory - The SAP RFC_START_PROGRAM RFC function suffers from multiple vulnerabilities.

tags | advisory, vulnerability
SHA-256 | 8c63eeebc53a49379d04e3a80f706807c750d399d670db9dec3308d3a570ba97

CYBSEC-saprfcstart.txt

Change Mirror Download
(The following pre-advisory is also available in PDF format for download at:
http://www.cybsec.com/vuln/CYBSEC-Security_Advisory_SAP_RFC_START_PROGRAM_RFC_Function_Multiple_Vulnerabilities.pdf )


CYBSEC S.A.
www.cybsec.com

Pre-Advisory Name: SAP RFC_START_PROGRAM RFC Function Multiple Vulnerabilities
==================

Vulnerability Class: Buffer Overflow, Information Disclosure
====================

Release Date: 2007-04-03
=============

Affected Applications:
======================
. SAP RFC Library 6.40
. SAP RFC Library 7.00

Affected Platforms:
===================

. AIX 32bit
. AIX 64bit
. HP-UX on IA64 64bit
. HP-UX on PA-RISC 64bit
. Linux on IA32 32bit
. Linux on IA64 64bit
. Linux on Power 64bit
. Linux on x86_64 64bit
. Linux on zSeries 64bit
. Mac OS
. OS/400
. OS/400 V5R2M0
. Reliant 32bit
. Solaris on SPARC 32bit
. Solaris on SPARC 64bit
. Solaris on x64_64 64bit
. TRU64 64bit
. Windows Server on IA32 32bit
. Windows Server on IA64 64bit
. Windows Server on x64 64bit
. z/OS 32bit

Local / Remote: Remote
===============

Severity: High
=========

Author: Mariano Nuñez Di Croce
=======

Vendor Status: Confirmed. Updates Released.
==============

Reference to Vulnerability Disclosure Policy: http://www.cybsec.com/vulnerability_policy.pdf
=============================================

Product Overview:
=================

"The RFC Library offers an interface to a SAP System. The RFC Library is the most commonly used and installed component of existing SAP Software. This
interface provides the opportunity to call any RFC Function in a SAP System from an external application. Moreover, the RFC Library offers the
possibility to write a RFC Server Program, which is accessible from any SAP System or external application. Most SAP Connectors use the RFC Library as
communication platform to SAP Systems."

RFC_START_PROGRAM RFC Function enables the execution of operating system programs on RFC-enabled components. This function is installed by default in
every external RFC server.

Vulnerability Description:
==========================

It is possible to remotely obtain information about external RFC server configuration. Besides, a buffer overflow vulnerability in the processing of
user input has been detected.

Technical Details:
==================

Technical details will be released three months after publication of this pre-advisory. This was agreed upon with SAP to allow their customers to
upgrade affected software prior to technical knowledge been publicly available.

Impact:
=======

These vulnerabilities may allow an attacker to remotely obtain information about RFC server configuration and to remotely execute arbitrary commands
over vulnerable external RFC servers.

Solutions:
==========

SAP has released patches to address these vulnerabilities. Affected customers should apply the patches immediately.
More information can be found on SAP Notes 1004084 and 1003908.

Vendor Response:
================

. 2006-11-21: Initial Vendor Contact.
. 2006-12-01: Vendor Confirmed Vulnerability.
. 2006-12-11: Vendor Releases Update for version 6.40.
. 2006-12-11: Vendor Releases Update for version 7.00.
. 2007-04-03: Pre-Advisory Public Disclosure.

Special Thanks:
===============

Thanks goes to Victor Montero and Gustavo Kunst.

Contact Information:
====================
For more information regarding the vulnerability feel free to contact the author at mnunez <at> cybsec <dot> com.



About CYBSEC S.A. Security Systems
-----------------------------------

Since 1996 CYBSEC S.A. is devoted exclusively to provide professional services specialized in Computer Security. More than 150 clients around the
globe validate our quality and professionalism.
To keep objectivity, CYBSEC S.A. does not represent, neither sell, nor is associated with other software and/or hardware provider companies.
Our services are strictly focused on Information Security, protecting our clients from emerging security threats, mantaining their IT deployments
available, safe, and reliable.
Beyond professional services, CYBSEC is continuosly researching new defense and attack techiniques and contributing with the security community with
high quality information exchange.

For more information, please visit www.cybsec.com



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