McAfee LinuxShield 1.5 and prior: Root Compromise -- Existing Account

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                         AUSCERT Security Bulletin

                               ASB-2010.0071
 McAfee Security Bulletin - LinuxShield update fixes authentication flaws
                               3 March 2010

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        AusCERT Security Bulletin Summary
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Product:              McAfee LinuxShield 1.5 and prior
Operating System:     Linux variants
Impact/Access:        Root Compromise -- Existing Account
Resolution:           Patch/Upgrade
Member content until: Friday, April  2 2010

OVERVIEW

        McAfee have released an update to LinuxShield to correct a security
        vulnerability.


IMPACT

        McAfee state this issue "involves improper authentication from a 
        LinuxShield client to the LinuxShield statistics server. Current 
        editions allow any user locally on the LinuxShield client system to
        log into the statistics server and execute commands as the 
        LinuxShield Admin user. The potential results include disabling of 
        the LinuxShield service and potential code execution." [1]
        
        "The LinuxShield Webinterface communicates with the localy installed
        'nailsd' daemon, which listens on port 65443/tcp, to do configuration
        changes, query the configuration and execute tasks.
        
        Each user, which can login to the victim box, can also authenticate
        it self to the "nailsd" and can do configuration changes and execute
        tasks with root privileges." [2]


MITIGATION

        McAfee recommend applying the patch to correct this issue. You need
        to log in to the following URL and supply the Grant Number.
        
            https://secure.nai.com/apps/downloads/my_products/login.asp


REFERENCES

        [1] McAfee Security Bulletin - LinuxShield update fixes authentication
            flaws
            https://kc.mcafee.com/corporate/index?page=content&id=SB10007

        [2] McAfee LinuxShield remote/local code execution
            http://sotiriu.de/adv/NSOADV-2010-004.txt

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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