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[CSSA-2000-032.0] Security Problems with syslog/klogd
From: Caldera Systems Security <support () PHOENIX CALDERASYSTEMS COM>
Date: Wed, 20 Sep 2000 09:12:23 +0200

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______________________________________________________________________________
                   Caldera Systems, Inc.  Security Advisory

Subject:                Security problems in syslogd/klogd
Advisory number:        CSSA-2000-032.0
Issue date:             2000 September, 19
Cross reference:
______________________________________________________________________________


1. Problem Description

   Several problems have been discovered in syslogd and klogd,
   the daemon programs responsible for system logging on Linux.

    -   There is a format bug in klogd.
    -   There is a single byte buffer overflow in syslogd.
    -   When given long messages, syslogd broadcasts the
        message to all users currently logged in.

   There are no known exploits yet, but the first two bugs
   could lead to a root compromise.

2. Vulnerable Versions

   System                       Package
   -----------------------------------------------------------
   OpenLinux Desktop 2.3        All packages previous to
                                sysklogd-1.4-2

   OpenLinux eServer 2.3        All packages previous to
   and OpenLinux eBuilder       sysklogd-1.4-2

   OpenLinux eDesktop 2.4       All packages previous to
                                sysklogd-1.4-2

3. Solution

   Workaround:

   None known. The proper solution is to upgrade to the fixed
   packages.

4. OpenLinux Desktop 2.3

   4.1 Location of Fixed Packages

       The upgrade packages can be found on Caldera's FTP site at:

       ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/RPMS/

       The corresponding source code package can be found at:

       ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/SRPMS

   4.2 Verification

       211046a507762511c45d31712bfb2485  RPMS/sysklogd-1.4-2.i386.rpm
       6752f208b1f24904e70e170540d83dea  SRPMS/sysklogd-1.4-2.src.rpm

   4.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

          rpm -Fhv sysklogd-1.4-2.i386.rpm

       Stop and restart the syslog service using

          /etc/rc.d/init.d/syslog stop
          /etc/rc.d/init.d/syslog start

5. OpenLinux eServer 2.3 and OpenLinux eBuilder for ECential 3.0

   5.1 Location of Fixed Packages

       The upgrade packages can be found on Caldera's FTP site at:

       ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/RPMS/

       The corresponding source code package can be found at:

       ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/SRPMS

   5.2 Verification

       39c86b8264cbfe9f30cfbbd1ff197f4c  RPMS/sysklogd-1.4-2.i386.rpm
       6752f208b1f24904e70e170540d83dea  SRPMS/sysklogd-1.4-2.src.rpm

   5.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

          rpm -Fhv sysklogd-1.4-2.i386.rpm

       Stop and restart the syslog service using

          /etc/rc.d/init.d/syslog stop
          /etc/rc.d/init.d/syslog start

6. OpenLinux eDesktop 2.4

   6.1 Location of Fixed Packages

       The upgrade packages can be found on Caldera's FTP site at:

       ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/RPMS/

       The corresponding source code package can be found at:

       ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/SRPMS

   6.2 Verification

       db9028cb2eb7430368ad1fcf3c4a457b  RPMS/sysklogd-1.4-2.i386.rpm
       6752f208b1f24904e70e170540d83dea  SRPMS/sysklogd-1.4-2.src.rpm

   6.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

          rpm -Fhv sysklogd-1.4-2.i386.rpm

       Stop and restart the syslog service using

          /etc/rc.d/init.d/syslog stop
          /etc/rc.d/init.d/syslog start

7. References

   This and other Caldera security resources are located at:

   http://www.calderasystems.com/support/security/index.html

   This security fix closes Caldera's internal Problem Report 7693.

8. Disclaimer

   Caldera Systems, Inc. is not responsible for the misuse of any of the
   information we provide on this website and/or through our security
   advisories. Our advisories are a service to our customers intended to
   promote secure installation and use of Caldera OpenLinux.

9. Acknowledgements

   Caldera Systems, Inc. wishes to thank the following people

           Jouko Pynnönen of Online Solutions, Finland
           Solar Designer
           Daniel Jacobowski of Debian
           Martin Schulze, sysklogd maintainer

    for discovering and/or fixing these bugs.
______________________________________________________________________________
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