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                         AUSCERT Security Bulletin

                               ASB-2009.1158
         PostgreSQL 8.4.2 has been released correcting a number of
                         security vulnerabilities
                             15 December 2009

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

Product:              PostgreSQL prior to 8.4.2
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Administrator Compromise       -- Remote with User Interaction
                      Provide Misleading Information -- Remote with User Interaction
                      Denial of Service              -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2009-4136 CVE-2009-4034 
Member content until: Thursday, January 14 2010

OVERVIEW

        Version 8.4.2 of PostgreSQL has been released correcting a number of
        security vulnerabilities. 


IMPACT

        The vendor lists the following details for the security vulnerabilities
        that have been corrected:
        
        "Protect against indirect security threats caused by index functions 
        changing session-local state (Gurjeet Singh, Tom). This change prevents 
        allegedly-immutable index functions from possibly subverting a 
        superuser's session (CVE-2009-4136)." [1]
        
        "Reject SSL certificates containing an embedded null byte in the common 
        name (CN) field (Magnus). This prevents unintended matching of a 
        certificate to a server or client name during SSL validation 
        (CVE-2009-4034)." [1]  
        
        "Fix crash if a DROP is attempted on an internally-dependent object 
        (Tom)" [1] 


MITIGATION

        The vendor recommends upgrading to the latest version. [1]


REFERENCES

        [1] PostgreSQL 8.4.2 Documentation Appendix E. Release Notes
            http://www.postgresql.org/docs/current/static/release-8-4-2.html

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

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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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