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______________________________________________________________________________
                   Caldera International, Inc. Security Advisory

Subject: Linux - Format String Problem in Cyrus-SASL
Advisory number: CSSA-2001-040.0
Issue date: 2001, November 26
Cross reference:
______________________________________________________________________________

1. Problem Description

   There is a format string bug in the Cyrus SASL library, and the
   library is used by sendmail. We are not sure whether this
   vulnerability can be exploited remotely just by connecting to
   sendmail, but if it is, the attacker would gain root access.
   
   We therefore urge our customers to upgrade this package immediately.

2. Vulnerable Versions

   System Package
   -----------------------------------------------------------
   OpenLinux 2.3 not vulnerable
   
   OpenLinux eServer 2.3.1 not vulnerable
   and OpenLinux eBuilder
   
   OpenLinux eDesktop 2.4 not vulnerable
   
   OpenLinux Server 3.1 All packages previous to
                                 libsasl-1.5.24-4
   
   OpenLinux Workstation 3.1 All packages previous to
                                 libsasl-1.5.24-4
   

3. Solution

   Workaround

     none

   The proper solution is to upgrade to the latest packages.

4. OpenLinux 2.3

    not vulnerable

5. OpenLinux eServer 2.3.1 and OpenLinux eBuilder for ECential 3.0

    not vulnerable

6. OpenLinux eDesktop 2.4

    not vulnerable

7. OpenLinux 3.1 Server

    7.1 Location of Fixed Packages

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

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/RPMS

       The corresponding source code package can be found at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/SRPMS

   7.2 Verification

       67e101e2ff0a259e57bbcc9eee616a1f RPMS/libsasl-1.5.24-4.i386.rpm
       9a971615138f2f2697dd8d0bdc8a9a83 RPMS/libsasl-devel-1.5.24-4.i386.rpm
       a07d72f78e59effc80012a686eca4351 SRPMS/libsasl-1.5.24-4.src.rpm
       

   7.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

         rpm -Fvh libsasl-1.5.24-4.i386.rpm \
              libsasl-devel-1.5.24-4.i386.rpm

       Do not forget to restart sendmail by using:

         /etc/rc.d/init.d/mta status && /etc/rc.d/init.d/mta restart
         

8. OpenLinux 3.1 Workstation

    8.1 Location of Fixed Packages

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

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/RPMS

       The corresponding source code package can be found at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/SRPMS

   8.2 Verification

       67e101e2ff0a259e57bbcc9eee616a1f RPMS/libsasl-1.5.24-4.i386.rpm
       9a971615138f2f2697dd8d0bdc8a9a83 RPMS/libsasl-devel-1.5.24-4.i386.rpm
       a07d72f78e59effc80012a686eca4351 SRPMS/libsasl-1.5.24-4.src.rpm
       

   8.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

         rpm -Fvh libsasl-1.5.24-4.i386.rpm \
              libsasl-devel-1.5.24-4.i386.rpm

       Do not forget to restart sendmail by using:

         /etc/rc.d/init.d/mta status && /etc/rc.d/init.d/mta restart

9. References

   This and other Caldera security resources are located at:

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

   This security fix closes Caldera's internal Problem Report 11066.

10. Disclaimer

   Caldera International, 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.

11. Acknowledgements

   Caldera International wishes to thank Kari Hurtta
   <hurtta+zzleija.mh.fmi.fi> for reporting this problem, and the security
   people at SuSE for the fix.
______________________________________________________________________________
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