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             AUSCERT External Security Bulletin Redistribution

                   ESB-2004.0686 -- APPLE-SA-2004-10-27
                        Security Update 2004-10-27
                              28 October 2004

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

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

Product:                Apple Remote Desktop Client prior to v1.2.4
Publisher:              Apple
Operating System:       Mac OS X 10.3.x
Impact:                 Reduced Security
Access:                 Remote/Unauthenticated
CVE Names:              CAN-2004-0962
Original Bulletin URL:
  http://docs.info.apple.com/article.html?artnum=61798

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APPLE-SA-2004-10-27 Security Update 2004-10-27

Security Update 2004-10-27 is now available and delivers the
following security enhancement for Apple Remote Desktop Client:

CVE-ID:  CAN-2004-0962
Available for:  Apple Remote Desktop Client v1.2.4 with Mac OS X
v10.3.x
Impact:  An application can be started behind the loginwindow and it
will run as root
Description:  For a system with the following pre-conditions:
*  Apple Remote Desktop client installed
*  A user on the client system has been enabled with the "Open and
quit applications" privilege
*  The username and password of the ARD user is known
*  Fast User Switching has been enabled
*  A user is logged in, and loginwindow is active via Fast User
Switching

If the Apple Remote Desktop Administrator application on another
system is used to start a GUI application on the client, then the GUI
application will run as root behind the loginwindow.  This update
prevents Apple Remote Desktop from launching applications when the
loginwindow is active.

This security enhancement is also present in Apple Remote Desktop
v2.1.

This issue does not affect systems prior to Mac OS X v10.3.  Credit
to Andrew Nakhla and Secunia Research for reporting this issue.

Security Update 2004-10-27 may be obtained from the Software Update
pane in System Preferences, or Apple's Software Downloads web site:
http://www.apple.com/support/downloads/

The download file is named: "SecurityUpdate2004-10-27.dmg"
Its SHA-1 digest is:  6f74180d4144affd3630e8824bff778ac39655e7

Information will also be posted to the Apple Product Security
web site:
http://www.apple.com/support/security/security_updates.html

This message is signed with Apple's Product Security PGP key,
and details are available at:
http://www.apple.com/support/security/security_pgp.html

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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
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