[Onapsis Security Advisory 2013-002] SAP SDM Denial of Service

[Onapsis Research Labs <research@xxxxxxxxxxx>]

Onapsis Security Advisory 2013-002: SAP SDM Denial of Service

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1. Impact on Business
=====================
By exploiting this vulnerability, an attacker would be able to perform a 
sabotage attack over the service used to deploy
and change software components in the SAP AS Java.

This would prevent legitimate developers and administrators from performing and 
maintain required business and technical
activities.

 Risk Level: Medium

2. Advisory Information
=======================

-- Public Release Date: 2013-02-21

-- Subscriber Notification Date: 2013-02-21

-- Last Revised: 2013-02-21

-- Security Advisory ID: ONAPSIS-2013-002

-- Onapsis SVS ID: ONAPSIS-00042

-- Researcher: Mariano Nunez / Jordan Santarsieri

-- Initial Base CVSS v2:  5.0 (AV:N/AC:L/AU:N/C:N/I:N/A:P)

3. Vulnerability Information
============================

-- Vendor: SAP

-- Affected Components:

   * SAP J2EE SDM
    (Check SAP Note 1586419 for detailed information on affected releases)

-- Vulnerability Class: Denial of Service

-- Remotely Exploitable: Yes

-- Locally Exploitable: No

-- Authentication Required: No

-- Original Advisory: 
http://www.onapsis.com/resources/get.php?resid=adv_onapsis-2013-002

4. Affected Components Description
==================================

The Software Deployment Manager (SDM) is the standard tool that you use to 
install J2EE components on the SAP J2EE
Engine. The SDM is a client/server application. The SDM Server runs on the SAP 
J2EE Engine side. This server is started
automatically with the J2EE Engine. A graphical user interface is available as 
a client. [1]

[1] 
http://help.sap.com/saphelp_nw04/helpdata/en/63/2c4f65a54c4a4db1a3600397ae617f/content.htm

5. Vulnerability Details
========================

The SDM suffers from a design vulnerability, in the way it handles failed user 
authentication attempts, generating a
Denial of Service condition if some conditions are met.  This can be abused by 
a malicious attacker to disrupt this service.

Additional technical details about this issue are not disclosed at this moment 
with the purpose of providing enough time
to affected customers to patch their systems and protect against the 
exploitation of the described vulnerability.

6. Solution
===========

SAP has released SAP Note 1586419 which provide patched versions of the 
affected components.
The patches can be downloaded from 
https://service.sap.com/sap/support/notes/1586419.

Onapsis strongly recommends SAP customers to download the related security 
fixes and apply them to the affected
components in order to reduce business risks.


7. Report Timeline
==================

2011-01-24: Onapsis provides vulnerability information to SAP.
2011-08-09: SAP releases security patches.
2013-02-21: Onapsis notifies availability of security advisory to security 
mailing lists.


About Onapsis Research Labs
===========================

Onapsis is continuously investing resources in the research of the security of 
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With that objective in mind, a special unit ? the Onapsis Research Labs ? has 
been developed since the creation of the
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community, encouraging the sharing of information and increasing the common 
knowledge in this field.

About Onapsis
=============

Onapsis is the leading provider of solutions for the security of ERP systems 
and business-critical applications. Through
different innovative products and services, Onapsis helps its global customers 
to effectively increase the security
level of their core business platforms, protecting their information and 
decreasing financial fraud risks.

Onapsis is built upon a team of world-renowned experts in the SAP security 
field, with several years of experience in
the assessment and protection of critical platforms in world-wide customers, 
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Copyright (c) 2013 Onapsis Inc. All rights reserved.
This advisory may be distributed as long as its distribution is free-of-charge 
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