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                         AUSCERT Security Bulletin

                               ASB-2010.0121
                  Updates Released for 3Com H3C Switches
                                11 May 2010

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

Product:              3Com H3C Switches
Operating System:     Network Appliance
Impact/Access:        Denial of Service -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
Member content until: Thursday, June 10 2010

OVERVIEW

        A security vulnerability has been corrected in 3Com H3C Switches.


IMPACT

        When configured as an SSH Server, an attacker can cause the device
        to restart by sending malcious packets to the SSH service. [1,2,3].
        
        This vulnerability has been confirmed in the following products:
        
          * S3100-52P [1]
          * 4200G [2]
          * 4500 [3]


MITIGATION

        The following updates have been made available to address this
        vulnerability:
        
          * S3100-52P: R1702P13
          * 4200G: V3.02.04
          * 4500: V3.03.02p09


REFERENCES

        [1] H3C S3100-52P-CMW310-R1702P13 Release Notes
            http://support.3com.com/documents/H3C/switches/3100/H3C_S3100-52P_CMW3.10.R1702P13_Release_Notes.pdf

        [2] Switch 4200G V3.02.04 Release Notes
            http://support.3com.com/documents/switches/4200G/Switch_4200G_V3.02.04_Release_Notes.pdf

        [3] Switch 4500 V3.03.02p09 Release Notes
            http://support.3com.com/documents/switches/4500/Switch_4500_V3.03.02p09_Release_Notes.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.

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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