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             AUSCERT External Security Bulletin Redistribution

                  ESB-2002.717 -- Apple Security Advisory
                    APPLE-SA-2002-12-19 Mac OS X 10.2.3
                             20 December 2002

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

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

Product:                Mac OS X
Vendor:                 Apple
Operating System:       Mac OS X 10.2
Impact:                 Root Compromise
                        Denial of Service
                        Reduced Security
Access Required:        Remote

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APPLE-SA-2002-12-19 Mac OS X 10.2.3

Mac OS X 10.2.3 Software Update is now available.  It contains fixes for 
the
following potential security issues:

*  fetchmail:  Fixes CAN-2002-1174 and CAN-2002-1175 which could lead
to a potential denial of service when using the fetchmail command-line 
tool.
fetchmail is updated to version 6.1.2+IMAP-GSS+SSL+INET6

*  CUPS:  Provides fixes for the following potential issues that could be
exploited remotely when Printer Sharing is enabled.  Printer Sharing is
not enabled by default on Mac OS X or Mac OS X Server.
         CAN-2002-1383:  Multiple Integer Overflows
         CAN-2002-1366:  /etc/cups/certs/ Race Condition
         CAN-2002-1367:  Adding Printers with UDP Packets
         CAN-2002-1368:  Negative Length Memcpy() Calls
         CAN-2002-1384:  Integer Overflows in pdftops Filter and Xpdf
         CAN-2002-1369:  Unsafe Strncat Function Call in jobs.c
         CAN-2002-1370:  Root Certificate Design Flaw
         CAN-2002-1371:  Zero Width Images in filters/image-gif.c
         CAN-2002-1372:  File Descriptor Resource Leaks

In addition, Mac OS X 10.2.3 provides the following enhanced security 
features:

*  Random initialization of TCP Timestamp:  This enhancement was submitted 
by
Aaron Linville through the Darwin open source program.  It prevents a 
remote entity
from discovering how long a machine has been up based on the ID in the TCP 
packets.

*  Disk Utility now provides the option to zero data on the disk, 
providing an
additional method for securing information.

Mac OS X 10.2.3 Software Update may be obtained from:

   * Software Update pane in System Preferences

      - OR -

   * Apple's Software Downloads web site:
       Updating from Mac OS X 10.2:
         http://www.info.apple.com/kbnum/n120164
         The download file is named:  "MacOSXUpdateCombo10.2.3.dmg"
         Its SHA-1 digest is:  46df611279b9981425be2cff23c3b3ed868d1809

       Updating from Mac OS X 10.2.2:
         http://www.info.apple.com/kbnum/n120165
         The download file is named:  "MacOSXUpdate10.2.3.dmg"
         Its SHA-1 digest is:  a51ed65311ad59879db7e728779e9cd4084057b5

Information will also be posted to the Apple Support web site:
http://docs.info.apple.com/article.html?artnum=61798

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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