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                     Turbolinux Security Announcement

        Package:  netscape-communicator
        Vulnerable Packages: All Turbolinux versions previous to 4.77-3
        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#:  TLSA2001015

        Credits:  Vulnerability discovered by Florian Wesch <fw@dividuum.de
 >
        References:  http://www.securityfocus.com/archive/1/175060

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A security hole has been discovered in the netscape-communicator  package.  
Please update the packages in your installation as soon as possible.
____________________________________________________________________________________________
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1. Problem Summary

   The Netscape browser does not escape the gif file comment in the
   image information page. This allows javascript execution in the
   "about:" protocol and can for example be used to upload the
   History (about:global) to a webserver.

2. Impact

   It is possible for a user to view a history of URLs visited on a remote 
   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:

netscape-communicator-4.77-3.i386.rpm

   The source RPM can be downloaded here:

netscape-communicator-4.77-3.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
-------------------------------------------------------------------------------------------
-
                                       
  1c22d82709154a5541cf01e8561651c4    netscape-communicator-4.77-3.i386.rpm
  a0973f4123b0a6bba0279e403cae4772    netscape-communicator-4.77-3.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.

_______________________________________________________________________________________________
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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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