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Date:         Wed, 2 Aug 2000 13:34:36 -0700
From: Joe Little <jlittle@TURBOLINUX.COM>
Subject:      [TL-Security-Announce] netscape TLSA2000017-1
To: BUGTRAQ@SECURITYFOCUS.COM

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___________________________________________________________________________

                        TurboLinux Security Announcement

        Package: netscape-4.73 and earlier
        Date: Wednesday August 2 12:00 PDT 2000

        Affected TurboLinux versions: 6.0.5 and earlier
        Vulnerability Type: malicious remote website exploit possible
        TurboLinux Advisory ID#:  TLSA2000017-1
        Credits: netscape.ad-1.00-07

___________________________________________________________________________

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

Current and previous versions of netscape communicator have a buffer overflow
condition in its handling of JPEG files. Specifically, it trusts the purported
length of JPEG files provided by the header and can be mislead into reading
arbitrary amounts of data, leading to the overwriting of memory.

2. Impact

A web site could contain malicious code which would enable remote execution
or other malicious behavior as the user of netscape on the client's machine.

3. Solution

Please upgrade your packages to match the new revision

Update the packages 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/netscape-communicator-4.74-2.i386.rpm

The source RPM can be downloaded here:

ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/netscape-communicator-4.74-2.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
- - ---------------------------------------------------------------------------
940ec5bccc73166938e1b75cb384de19  netscape-communicator-4.74-2.i386.rpm
dcc0a1890e0123efd3cd86efbc276942  netscape-communicator-4.74-2.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:

 rpm --checksig --nogpg 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
   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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