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ASB-2012.0053.2 - UPDATE [Appliance] Siemens Scalance X Switches: Denial of service - Remote/unauthenticated

Date: 20 April 2012

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

                              ASB-2012.0053.2
     Multiple Security Vulnerabilities in Siemens Scalance X Switches
                               20 April 2012

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

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

Product:              Siemens Scalance X Switches
Operating System:     Network Appliance
Impact/Access:        Denial of Service -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2012-1802  
Member content until: Thursday, May 10 2012

Revision History:     April 20 2012: CVE reference added
                      April 10 2012: Initial Release

OVERVIEW

        Multiple Siemens Scalance X switches are vulnerable to a denial of
        service attack.


IMPACT

        The vendor has provided the following information:
        
        "The web server of the vulnerable switches is susceptible to a
        remote denial of service attack. If the attack is executed, it
        causes a reboot of the device and no data can be transferred
        over the device." [1]


MITIGATION

        The vendor has provided firmware updates to address the
        vulnerability. [1]


REFERENCES

        [1] SSA-130874:  Multiple Security Vulnerabilities in Siemens Scalance
            X Switches
            http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-130874.pdf

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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