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                     Turbolinux Security Announcement

       			       Ramen Worm
     
        Vulnerable Turbolinux platforms:  TL Workstation 6.1
                                          Turbolinux Server versions 6.0.5 
                                          and earlier
                                      
        Turbolinux Advisory ID#:  TLSA2001016
                  
        References: http://www.securityfocus.com/headlines/10072 
                    http://www.securityfocus.com/headlines/10073
                    http://www.securityfocus.com/archive/12/158975
            http://www.linuxsecurity.com/advisories/redhat_advisory-572.html


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Although we have not received any security alerts about Turbolinux systems
being infected by the Ramen Worm, the Turbolinux platforms mentioned above
can be susceptible to it. Please take the proper precaution by updating
the packages in your installation as soon as possible.
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1. Problem Summary

   Ramen is a Linux-based Internet worm that has infiltrated web servers
 running Red Hat 6.2
   or Red Hat 7.0 Linux using three security breaches associated with the
 packages nfs-utils, 
   wu-ftpd, and LPRng.  Once the worm detects the vulnerabilities, it exploits
 them, copies
   itself onto the server, and takes over root access rights.  The Ramen worm
 can damage web-
   related and system files.  It defaces the web site and modifies the
 index.html file, ul-
   timately replacing it with the words:  

                "RameN Crew" and "Hackers looooooooooooooooove
 noodles."

   The main page of the web site displays the message "This site powered
 by" and a picture
   of a Top Ramen Noodles package.  According to an advisory put out by CERT,
 it can also 
   create denial of service attacks if altered or when destroyed files are not
 available.
   A system compromised by the worm is at high risk for "being party to
 attacks on other 
   Internet sites."  

   The three security breaches sought out by the Ramen worm are as follows:

	a. wu-ftpd:  Buffer overrun;  due to improper bounds checking, SITE EXEC may 
                     enable remote root execution, without having any local
 user account 
                     required.

        b. nfs-utils:  Flaw in the rpc.statd daemon can lead to remote root
 break in.
                       Please note that the nfs-utils package will replace the 
                       packages knfsd and knfsd-client.  The package
 knfsd-client
                       contains the rpc.statd daemon.

        c. LPRng:  Vulnerability due to incorrect usage of the syslog()
 function.
                   Local and remote users can send string-formatting operators
 to the print-
                   er daemon to corrupt the daemon's execution, potentially
 gaining root
                   access.


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/nfs-utils-0.2.1-7.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/wu-ftpd-2.6.1-5.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/LPRng-3.6.26-1.i386.rpm

   The source RPMs can be downloaded here:


   ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/nfs-utils-0.2.1-7.src.rpm
   ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/wu-ftpd-2.6.1-5.src.rpm
   ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/LPRng-3.6.26-1.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
--------------------------------------------------------------------------------------------
-

  a11507768f746e6dfbe1b55705ac9b0a      wu-ftpd-2.6.1-5.i386.rpm
  aec472f299ad23e8e1030f3aeb6733c7      wu-ftpd-2.6.1-5.src.rpm
  ddb4b4c0d50650c4a8acc5692b8c0f1a      nfs-utils-0.2.1-7.i386.rpm
  948e3c6b45db0d18b57713572575d6c8      nfs-utils-0.2.1-7.src.rpm
  b4366ecf26b2156d9de3c0bbdce320ca      LPRng-3.6.26-1.i386.rpm
  a6d6ce0f0291ba42d7fa4ef063bc1107      LPRng-3.6.26-1.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
_______________________________________________________________________________________________
_

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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