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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                cyrus-sasl-digestmd5
        Announcement ID:        SUSE-SA:2006:025
        Date:                   Fri, 05 May 2006 13:00:00 +0000
        Affected Products:      SUSE LINUX 9.3
                                SUSE LINUX 9.2
                                SUSE LINUX 9.1
                                SUSE SLES 9
        Vulnerability Type:     remote denial of service
        Severity (1-10):        5
        SUSE Default Package:   yes
        Cross-References:       CVE-2006-1721, CVE-2006-1905

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             remote denial of service against cyrus-sasl using programs
           Problem Description
        2) Solution or Work-Around
        3) Special Instructions and Notes
        4) Package Location and Checksums
        5) Pending Vulnerabilities, Solutions, and Work-Arounds:
            - xine-ui format string problems
            - clamav buffer overflow
            - mysql various issues
            - next kernel update
            - ethereal various problems
        6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

   If a server or client is using DIGEST-MD5 authentication via the cyrus-sasl
   libraries it is possible to cause a denial of service attack against the other
   side (client or server) by leaving out the "realm=" header in the authentication.

   This is tracked by the Mitre CVE ID CVE-2006-1721.
2) Solution or Work-Around

   There is no known workaround, please install the update packages.

3) Special Instructions and Notes

   Please restart the services using cyrus-sasl (cyrus-imapd is one of those).

4) Package Location and Checksums

   The preferred method for installing security updates is to use the YaST
   Online Update (YOU) tool. YOU detects which updates are required and
   automatically performs the necessary steps to verify and install them.
   Alternatively, download the update packages for your distribution manually
   and verify their integrity by the methods listed in Section 6 of this
   announcement. Then install the packages using the command

     rpm -Fhv <file.rpm>

   to apply the update, replacing <file.rpm> with the filename of the
   downloaded RPM package.


   x86 Platform:

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/cyrus-sasl-digestmd5-2.1.20-7.2.i586.rpm
          7ae81695233f202a12f4c5c7d819302e

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/cyrus-sasl-digestmd5-2.1.19-7.4.i586.rpm
          f91978bbd48c77c768aa5ddadc84ce3e

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/cyrus-sasl-digestmd5-2.1.18-33.11.i586.rpm
          080a9846ce3ce42cbfde6d1159e3cebc

   x86-64 Platform:

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/cyrus-sasl-digestmd5-2.1.20-7.2.x86_64.rpm
          d2ec2cde79e08f20bff8b248cee64f48

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/cyrus-sasl-digestmd5-2.1.19-7.4.x86_64.rpm
          77d305e731f06d7022bebb616ab85406

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/cyrus-sasl-digestmd5-2.1.18-33.11.x86_64.rpm
          cb6967a053f3672107ca83c7e81d6903

   Our maintenance customers are notified individually. The packages are
   offered for installation from the maintenance web:

   SUSE SLES 9
     http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/35452cb6896bec388d5e441a772fd24f.html

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

   - xine-ui format string problems
     xine-ui has been updated to fix multiple format string bugs in the
     file name processing code of playlists that could potentially be
     exploited to execute arbitrary code (CVE-2006-1905).

   - clamav buffer overflow
     A clamav update to version 0.88.2 is in preparation, which fixes
     among other things the following security problem:

     - A buffer overflow in the freshclam program might allow remote web
       servers to execute arbitrary code via long HTTP headers
       (CVE-2006-1989).

     All SUSE Linux based products containing clamav are affected by
     these problems.

   - mysql various issues
     MySQL 5.0.21 was released fixing various security problems, including
     information leaks and a remote code execution.

     We are currently preparing updates for these problems.

   - next kernel update
     We are currently preparing a kernel update, collecting issues found
     in the last 3 months. The current schedule projects a release near
     end of may.

     All SUSE Linux based products will receive those updates.

   - ethereal various problems
     Various ethereal problems have been identified and fixed in the
     newest ethereal release. We are preparing updates for these problems.

     All SUSE Linux versions are affected.
______________________________________________________________________________

6) Authenticity Verification and Additional Information

  - Announcement authenticity verification:

    SUSE security announcements are published via mailing lists and on Web
    sites. The authenticity and integrity of a SUSE security announcement is
    guaranteed by a cryptographic signature in each announcement. All SUSE
    security announcements are published with a valid signature.

    To verify the signature of the announcement, save it as text into a file
    and run the command

      gpg --verify <file>

    replacing <file> with the name of the file where you saved the
    announcement. The output for a valid signature looks like:

      gpg: Signature made <DATE> using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team <security@suse.de>"

    where <DATE> is replaced by the date the document was signed.

    If the security team's key is not contained in your key ring, you can
    import it from the first installation CD. To import the key, use the
    command

      gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

  - Package authenticity verification:

    SUSE update packages are available on many mirror FTP servers all over the
    world. While this service is considered valuable and important to the free
    and open source software community, the authenticity and the integrity of
    a package needs to be verified to ensure that it has not been tampered
    with.

    There are two verification methods that can be used independently from
    each other to prove the authenticity of a downloaded file or RPM package:

    1) Using the internal gpg signatures of the rpm package
    2) MD5 checksums as provided in this announcement

    1) The internal rpm package signatures provide an easy way to verify the
       authenticity of an RPM package. Use the command

        rpm -v --checksig <file.rpm>

       to verify the signature of the package, replacing <file.rpm> with the
       filename of the RPM package downloaded. The package is unmodified if it
       contains a valid signature from build@suse.de with the key ID 9C800ACA.

       This key is automatically imported into the RPM database (on
       RPMv4-based distributions) and the gpg key ring of 'root' during
       installation. You can also find it on the first installation CD and at
       the end of this announcement.

    2) If you need an alternative means of verification, use the md5sum
       command to verify the authenticity of the packages. Execute the command

         md5sum <filename.rpm>

       after you downloaded the file from a SUSE FTP server or its mirrors.
       Then compare the resulting md5sum with the one that is listed in the
       SUSE security announcement. Because the announcement containing the
       checksums is cryptographically signed (by security@suse.de), the
       checksums show proof of the authenticity of the package if the
       signature of the announcement is valid. Note that the md5 sums
       published in the SUSE Security Announcements are valid for the
       respective packages only. Newer versions of these packages cannot be
       verified.

  - SUSE runs two security mailing lists to which any interested party may
    subscribe:

    suse-security@suse.com
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                <suse-security-subscribe@suse.com>.

    suse-security-announce@suse.com
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to
                <suse-security-announce-subscribe@suse.com>.

    For general information or the frequently asked questions (FAQ),
    send mail to <suse-security-info@suse.com> or
    <suse-security-faq@suse.com>.

    =====================================================================
    SUSE's security contact is <security@suse.com> or <security@suse.de>.
    The <security@suse.de> public key is listed below.
    =====================================================================
______________________________________________________________________________

    The information in this advisory may be distributed or reproduced,
    provided that the advisory is not modified in any way. In particular, the
    clear text signature should show proof of the authenticity of the text.

    SUSE Linux Products GmbH provides no warranties of any kind whatsoever
    with respect to the information contained in this security advisory.

Type Bits/KeyID     Date       User ID
pub  2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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