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AA-2009.0138                  AUSCERT Advisory

                                   [AIX]
                       Portmapper: Denial of Service
                                9 June 2009
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        AusCERT Advisory Summary
        ------------------------

Product:              Portmapper
Operating System:     AIX 5.3
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-1954
Member content until: Tuesday, July 07 2009

OVERVIEW:

       IBM have confirmed a security vulnerability in AIX 5.3.


IMPACT:

       The vendor has provided the following details regarding this 
       vulnerability:

       "Portmapper can hang causing NFS, NIS, or other subsystems which 
       depend upon portmapper to also hang." [1]


MITIGATION:

       An interim fix has been released to address this vulnerability, as 
       is available for download from the vendor's website. [2]


REFERENCES:

       [1] IZ50802: PORTMAPPER HANGS
           http://www-01.ibm.com/support/docview.wss?uid=isg1IZ50802

       [2] Interim Fix IZ50802
           ftp://ftp.software.ibm.com/aix/efixes/iz50802/

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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