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AA-2009.0096                  AUSCERT Advisory

                    [BlackBerry][Win][Linux][Solaris][AIX]
            BlackBerry Enterprise Server: Execute Arbitray Code
                               17 April 2009
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        AusCERT Advisory Summary
        ------------------------

Product:              BlackBerry Enterprise Server
Operating System:     BlackBerry
                      Windows
                      AIX
                      Linux variants
                      Solaris
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
Member content until: Friday, May 15 2009

OVERVIEW:

       Multiple security vulnerabilities have been corrected in BlackBerry 
       Enterprise Server.


IMPACT:

       The vendor has provided the following information regarding this
       vulnerabilities:

       "A security vulnerability exists in the MDS Connection Service of 
       the BlackBerry Enterprise Server Version 4.1.6 MR4 and earlier. This 
       vulnerability could enable externally supplied scripts to be executed 
       in the security context of the user administering the MDS Connection 
       Service using the BlackBerry Administration Service." [1]

       "Multiple security vulnerabilities exist in the PDF distiller of 
       some released versions of the BlackBerry Attachment Service. These 
       vulnerabilities could enable a malicious individual to send an email 
       message containing a specially crafted PDF file, which when opened for 
       viewing on a BlackBerry smartphone, could cause memory corruption and 
       possibly lead to arbitrary code execution on the computer that hosts 
       the BlackBerry Attachment Service." [2]


MITIGATION:

       The first vulnerability can be corrected by upgrading to BlackBerry 
       Enterprise Server version 4.1.6 MR5. Visit the vendor's download site
       to obtain the new version. [3]

       The second vulnerability can be correct by downloading the relevant
       patches also available from the vendor's download site. [3]


REFERENCES:

       [1] Cross site scripting vulnerability in the BlackBerry Enterprise 
           Server MDS Connection Service
           http://www.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB17969

       [2] Vulnerabilities in the PDF distiller of the BlackBerry Attachment 
           Service for the BlackBerry Enterprise Server
           http://www.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB17953

       [3] Software Download for BlackBerry Enterprise Server
           http://www.blackberry.com/go/serverdownloads

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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