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[TL-Security-Announce] nmh-1.0.2 and earlier TLSA200008-1
From: k8e () MAIL TURBOLINUX COM (Katie Moussouris)
Date: Tue, 21 Mar 2000 17:06:26 -0800


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______________________________________________________________________________

                        TurboLinux Security Announcement

        Package: nmh-1.0.2 and earlier
        Date:   Tue Mar 21 17:42:37 PST 2000

        Affected TurboLinux versions: 6.0.2 and earlier
        Vulnerability Type: remote execution of shellcode
        TurboLinux Advisory ID#:  TLSA200008-1
        BugTraq ID#: 1018
        Credits:  This vulnerability was posted to the Bugtraq mailing list on
        February 28, 2000 by ruud () ruud org (Ruud de Rooij).
______________________________________________________________________________

A security hole was discovered in the package mentioned above.
Please update the package in your installation as soon as possible or
disable the service.
_____________________________________________________________________________

1. Problem Summary

   A buffer overrun exists in nmh versions 1.0.2 and prior.  Due to improper
   MIME header parsing, an attacker could create a MIME message such that
   the mhshow utility may be used to execute shell code when the message is
   viewed.

2. Impact

   An attacker can use this exploit to remotely execute code on the machine
   where nmh is being used to read mail.  This could easily lead to a remote
   root compromise.

3. Solution

  Update the package from our ftp server by running the following command:

  rpm -Fv ftp_path_to_filename

  Where ftp_path_to_filename is the following:

  ftp://ftp.turbolinux.com/pub/updates/6.0/security/nmh-1.0.3-0.i386.rpm

  The source rpm can be downloaded here:

  ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/nmh-1.0.3-0.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 checksum of the update before you install:

  MD5 sum                               Package Name
- ------------------------------------------------------------
f69c396498cac8c8da72e6ea122ed456  nmh-1.0.3-0.i386.rpm
27bcd2c1cb6a8424861ce26b5304cc9c  nmh-1.0.3-0.src.rpm
______________________________________________________________________________

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
  ftp://ftp.turbolinux.com/pub/updates/4.0/security/ for TL4.0 Workstation
  and Server security updates

Our webpage for security announcements:

  http://www.turbolinux.com/security

If you want to report vulnerabilities, please contact:

  rt-security () turbolinux com
______________________________________________________________________________

Subscribe to the TurboLinux Security Mailing lists:

  TL-security - A moderated list for discussing security issues in 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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