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                     Turbolinux Security Announcement

        Package:  openssl
        Vulnerable Packages: All Turbolinux versions previous to 0.9.6a-2
        Date: 05/16/2001 5:00 PDT


        Affected Turbolinux versions: TL Server 6.5
                                      
        Turbolinux Advisory ID#:  TLSA2001023

        Credits: Special thanks go out to the OpenSSL team

References:  http://marc.theaimsgroup.com/?l=openssl-announce&m=98655255404174&w=2
                     http://www.openssl.org/source/exp/CHANGES

____________________________________________________________________________________________
_

Several security holes has been fixed in the package openssl.  Please
update the packages in your installation as soon as possible.
____________________________________________________________________________________________
_

1. Problem Summary

   There are four security fixes that have been applied to this update of
 openssl:

   	-The  behavior of OpenSSL has been modified to avoid using environment
 variables 
         when running as root.
        -A checking scheme has been implemented to check the result of RSA-CRT.
  This 
         reduces the possibility of deducing the private key from an
 incorrectly
         calculated signature.
   	-A prevention measure against Bleichenbacher's DSA attack is also
 added.
        -The premaster secret is zeroed after deriving the master secret in DH
 ciphersuites.   

2. 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/openssl-0.9.6a-2.i386.rpm
openssl-devel-0.9.6a-2.i386.rpm

   The source RPM can be downloaded here:

ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/openssl-0.9.6a-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
--------------------------------------------------------------------------------------------
-
                                       
  36de8b1bf2dc8999b4e7bc7bfa3f6f0e      openssl-0.9.6a-2.i386.rpm
  30b164a043cdb02831cc5cf587dab258      openssl-devel-0.9.6a-2.i386.rpm
  292468156d460ca93bd522c66ab80099      openssl-0.9.6a-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:

 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.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
_______________________________________________________________________________________________
_

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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