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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0927
          SAP Crystal Reports JobServer GIOP Request Remote Code
                          Execution Vulnerability
                              13 October 2010

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           SAP Crystal Reports JobServer
Publisher:         Zero Day Initiative
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://www.zerodayinitiative.com/advisories/ZDI-10-196/

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SAP Crystal Reports JobServer GIOP Request Remote Code Execution Vulnerability

ZDI-10-196: October 12th, 2010

CVSS Score

      10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

Affected Vendors

      SAP

Affected Products

      Crystal Reports

TippingPoint IPS Customer Protection TippingPoint IPS customers are protected
against this vulnerability by Digital Vaccine protection filter ID 10482. For
further product information on the TippingPoint IPS:

      http://www.tippingpoint.com

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on 
vulnerable installations of SAP Crystal Reports. Authentication is not 
required to exploit this vulnerability.

The specific flaw exists within the JobServer.exe process which listens by 
default on several TCP ports above 1024. When parsing a GIOP request, the 
process trusts a user-supplied 32-bit value and allocates a buffer on the 
heap. The process then proceeds to copy the string following this value from 
the packet until it finds a NULL byte. By crafting a specifically sized packet
a remote attacker can overflow the buffer and gain code execution under the 
context of the SYSTEM user. Vendor Response SAP states:

A solution was provided via SAP note 1509604 
(https://websmp130.sap-ag.de/sap/support/notes/1509604)

Disclosure Timeline

      2010-07-20 - Vulnerability reported to vendor 2010-10-12 - Coordinated 
                   public release of advisory

Credit This vulnerability was discovered by:

      AbdulAziz Hariri

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