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

                       AL-2006.0123 -- AUSCERT ALERT
                                   [Win]
          MS06-077 - Vulnerability in Remote Installation Service
                     Could Allow Remote Code Execution
                             13 December 2006

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

Product:              Remote Installation Service (RIS)
Publisher:            Microsoft
Operating System:     Windows 2000
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2006-5584

Original Bulletin:
  http://www.microsoft.com/technet/security/Bulletin/MS06-077.mspx

Comment: Due to the nature of Remote Installation Services, successful
         exploitation of this vulnerability could lead to the compromise of
         other machines on the affected network.
         
         The Remote Installation Server should not be available to a public
         network. Best practices state that only machines that need access
         to such a service should be granted access.

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MS06-077 - Vulnerability in Remote Installation Service Could Allow Remote
           Code Execution (926121)

Affected Software: 
 - Microsoft Windows 2000 Service Pack 4

Full MS06-077 Advisory:
  http://www.microsoft.com/technet/security/Bulletin/MS06-077.mspx

Vulnerability Details

RIS Writable Path Vulnerability
CVE-2006-5584

The Remote Installation Service enables a TFTP service on the server which
by default could allow an anonymous user to potentially overwrite existing
operating system files or upload a specially crafted file. This could allow
an attacker to compromise operating system installs offered by the RIS server.

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        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
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                On call after hours for member emergencies only.
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