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AA-2007.0100                  AUSCERT Advisory

                             [Win][UNIX/Linux]
     Plone Vulnerability Allows the Remote Execution of Arbitrary Code
                              9 November 2007
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        AusCERT Advisory Summary
        ------------------------

Product:              Plone
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-5741
Member content until: Friday, December 07 2007

Original Bulletin:    http://plone.org/about/security/advisories/cve-2007-5741


OVERVIEW:

        A vulnerability in Plone has been reported which can allow remote
        unauthenticated users to execute arbitrary code.


IMPACT:

        Plone 2.5 through 2.5.4 and 3.0 through 3.0.2 allows remote attackers 
        to execute arbitrary Python code via network data containing pickled 
        objects for the (1) statusmessages or (2) linkintegrity module, which 
        the module unpickles and executes. [1] 
 

MITIGATION

        Plone has fixed this vulnerability in the release of versions 2.5.5
        and 3.0.3 which can be downloaded from the Plone website. [2]

        Alternatively you can install the hotfix into your current version
        of Plone. Instructions for downloading, installing and confirming
        the Hotfix are available on the website. [3]


REFERENCES:

        [1] National Vulnerability Database        
            http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-5741

        [2] Plone Products
            http://plone.org/products/plone

        [3] Plone Hotfix 20071106
            http://plone.org/about/security/advisories/cve-2007-5741


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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