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                     Turbolinux Security Announcement

        Package: xntp3
        Vulnerable Packages: All Turbolinux versions previous to 5.93-10
        Date: 05/02/2001 5:00 PDT


        Affected Turbolinux platforms: TL Server 6.5,
                                       TL 6.1 WorkStation,
                                       All Turbolinux versions
                                       6.0.5 and earlier

        Turbolinux Advisory ID#:  TLSA2001014

        Credits:  Vulnerability discovered by Przemyslaw
 Frasunek<venglin@freebsd.lublin.pl>      
        References: http://www.securityfocus.com/vdb/bottom.html?vid=2540

____________________________________________________________________________________________
_

A security hole has been discovered in the xntp3 packages.  Please update
the packages in your installation as soon as possible.
____________________________________________________________________________________________
_

1. Problem Summary

   A remote buffer overflow vulnerability exists in the network time
   protocol daemon.  It is remotely exploitable and a user with malicious
   intent can crash the daemon or execute arbitrary code on the affected
   host.

2. Impact

   Remote exploitation can result in an attacker gaining remote root
   access or a denial of ntp service on the affected system.

3. Solution
     
   Update the packages from our ftp server by running the following command:

   rpm -Uvh ftp_path_to_filename

   Where ftp_path_to_filename is the following:

ftp://ftp.turbolinux.com/pub/updates/6.0/security/xntp3-5.93-10.i386.rpm
xntp3-server-5.93-10.i386.rpm

   The source RPM can be downloaded here:

   ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/xntp3-5.93-10.src.rpm

  **Note: You must rebuild and install the RPM if you choose to download
  and install the SRPM.  Simply installing the SRPM alone WILL NOT CLOSE
  THE SECURITY HOLE.

 Please verify the MD5 checksums of the updates before you install:

  MD5 sum                               Package Name
--------------------------------------------------------------------------------------------
-
                                       
  1acc3320414d9cf0c95359ee441f670c	xntp3-5.93-10.i386.rpm
  dfb4610caddfe8970e7c9f37c4fc9ec7      xntp3-server-5.93-10.i386.rpm
  b68734be1f493230aa773f19a0bfb0b5      xntp3-5.93-10.src.rpm
____________________________________________________________________________________________
_

These packages are GPG signed by Turbolinux for security. Our key
is available here:

 http://www.turbolinux.com/security/tlgpgkey.asc

To verify a package, use the following command:

 rpm --checksig name_of_rpm

To examine only the md5sum, use the following command:

 md5sum name_of_rpm

**Note: Checking GPG keys requires RPM 3.0 or higher.

_______________________________________________________________________________________________
_

You can find more updates on our ftp server:

   ftp://ftp.turbolinux.com/pub/updates/6.0/security/ 

for TL6.0 Workstation and Server security updates

Our webpage for security announcements:

   http://www.turbolinux.com/security

If you want to report vulnerabilities, please contact:

   security@turbolinux.com
_______________________________________________________________________________________________
_

Subscribe to the Turbolinux Security Mailing lists:

  TL-security - A moderated list for discussing security issues
                Turbolinux products.
  Subscribe at http://www.turbolinux.com/mailman/listinfo/tl-security

  TL-security-announce - An announce-only mailing list for security
                         updates and alerts.

  Subscribe at:

      http://www.turbolinux.com/mailman/listinfo/tl-security-announce

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