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ASB-2011.0105 - [Win][UNIX/Linux] Joomla!: Reduced security - Remote/unauthenticated

Date: 24 November 2011

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===========================================================================
                         AUSCERT Security Bulletin

                               ASB-2011.0105
                 Password change vulnerability in Joomla!
                             24 November 2011

===========================================================================

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

Product:              Joomla!
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Reduced Security -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2011-4321  
Member content until: Saturday, December 24 2011

OVERVIEW

        Joomla! 1.5.25 1.7.3 have been released correcting a password
        vulnerability. [1,2]


IMPACT

        Due to a weak random number generator, Joomla! password reset function
        could allow a remote attacker to change a users password. [1,2]


MITIGATION

        Version 1.5.25 and 1.7.3 have beel released to correct this
        vulnerability. [1,2]


REFERENCES

        [1] [20111102] - Core - Password Change
            http://developer.joomla.org/security/news/374-20111102-core-password-change.html

        [2] [20111103] - Core - Password Change
            http://developer.joomla.org/security/news/375-20111103-core-password-change.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.

===========================================================================
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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