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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2008.0116 -- AUSCERT ALERT
                             [Win][UNIX/Linux]
 Symantec Backup Exec Authentication Bypass and Potential Buffer Overflow
                             12 December 2008

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        AusCERT Alert Summary
        ---------------------

Product:              Backup Exec
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Denial of Service
                      Inappropriate Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-5407 CVE-2008-5408
Member content until: Friday, December 19 2008

Revision History:     December 12 2008: Added CVEs
                      November 21 2008: Initial Release

OVERVIEW:

       A number of builds of Backup Exec are affected by multiple security 
       vulnerabilities.


IMPACT:

       Backup Exec remote agents are exposed to the potential for 
       authentication bypass to an authorised but unprivileged network user 
       during the logon process. 

       A buffer overflow vulnerability is exposed in the data management 
       protocol, allowing the unauthorised user to cause a Denial of Service. 
       Further compromise of the system is also possible. [1]


MITIGATION:

       Symantec has currently released patches to correct Windows builds only. 
       All users should upgrade as soon as possible.


REFERENCES:

       [1] Symantec Backup Exec Authentication Bypass and Potential Buffer 
           Overflow
           http://securityresponse.symantec.com/avcenter/security/Content/2008.11.19.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.

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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