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