Turbolinux Security Announcement: vixie-cron

Date: Wed, 23 May 2001 22:09:54 -0700 (PDT)
From: TurboLinux Security Team <security@www1.turbolinux.com>
Subject: [TL-Security-Announce] TLSA2001022 vixie-cron-3.0.1-47

___________________________________________________________________________________________

                     Turbolinux Security Announcement

        Package:  vixie-cron
        Vulnerable Packages: All Turbolinux versions previous to 3.0.1-47
        Date: 05/21/2001 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#:  TLSA2001022

        Credits: Vulnerability discovered by Sebastian Krahmer
        References: http://www.securityfocus.com/bid/2687 

___________________________________________________________________________________________

A security hole has been discovered in the package vixie-cron.  Please
update the packages in your installation as soon as possible.
___________________________________________________________________________________________

1. Problem Summary
   
   When a parsing error occurs after a modification operation, crontab will fail to drop 
   privileges correctly for subsequent modification operations. 

2. Impact

   It is possible for a local user to gain root privileges.

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:

ftp://ftp.turbolinux.com/pub/updates/security/vixie-cron-3.0.1-47.i386.rpm 

   The source RPM can be downloaded here:

   ftp://ftp.turbolinux.com/pub/updates/SRPMS/vixie-cron-3.0.1-47.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
- ---------------------------------------------------------------------------------------------
                                       
  e278af00ebb3f8d71ecf235d15428cb6      vixie-cron-3.0.1-47.i386.rpm/
  f250f52c96ac6c955d34829da6e0e3eb      vixie-cron-3.0.1-47.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/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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