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                        Turbolinux Security Announcement

        Package:  openssh
        Vulnerable Packages: All Turbolinux versions prior to 2.5.2p2-2
        Date: 05/17/2001 5:00 PDT

        Affected Turbolinux platforms:  TL Server 6.5

        Turbolinux Advisory ID#:  TLSA2001021
        
        Credits:  Solar Designer < solar@openwall.com >
                  Dug Song <dugsong@monkey.org>
                  Markus Friedl and Theo de Raadt of OpenSSH
                  Simon Tatham (PuTTY), and Niels Mller (LSH) 

        Reference:  http://www.securityfocus.com/archive/1/169840

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Several security holes were discovered in the package mentioned above.
Please update the packages in your installation as soon as possible.
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1. Problem Summary

      Several weaknesses in the SSH protocol have been detected.  To capitalize
 on them, an
   attacker must have the means to sniff, or monitor, network traffic between
 one or more
   SSH clients and servers.  Exploiting these weaknesses would enable an
 attacker to determine
   passwords and shell commands more quickly during passive monitoring of
 password authenti-
   cation and interactive ssh sessions.  
      The weaknesses in the SSH protocol include revealing an approximate, or,
 in the case 
   of SSH1, an exact length of a password, or shell command.  It is also
 possible to gather
   timing information, which can expose the likelihood of possible characters
 in each posi-
   tion of a password.  Using compression in an attempt to "randomize"
 the length of pass-
   words does not help much since the size of the compressed data packets
 depends on the con-
   tents of the packets.


2. Solution

   Update the packages from our ftp server by using 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/openssh-2.5.2p2-2.i386.rpm
openssh-askpass-2.5.2p2-2.i386.rpm
openssh-askpass-gnome-2.5.2p2-2.i386.rpm
openssh-clients-2.5.2p2-2.i386.rpm
openssh-server-2.5.2p2-2.i386.rpm

 The source RPM can be downloaded here:

  ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/openssh-2.5.2p2-2.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 checksums of the updates before you install:

  MD5 sum                               Package Name
--------------------------------------------------------------------------------------------
-
           
  16212b406435bb3bfa3ad157bc27e94a      openssh-2.5.2p2-2.i386.rpm
  f3f499f9e9a052bdd2511ed0d28bb89a      openssh-askpass-2.5.2p2-2.i386.rpm
  3d348dffe8c985fac2dbc5e03a58cf00     
 openssh-askpass-gnome-2.5.2p2-2.i386.rpm
  cc59641605ac79ed24f51ebc0dde1325      openssh-clients-2.5.2p2-2.i386.rpm
  3682d87243e2fbe823cf9c892bf6cf21      openssh-server-2.5.2p2-2.i386.rpm
  f57ddc14e022638fd76bc76b17653291      openssh-2.5.2p2-2.src.rpm
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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.x 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
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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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