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Message-ID: <44a92247.k3Wu7lNOOnHB6WmI%meissner@suse.de>
Date: Mon Jul  3 14:57:42 2006
From: meissner at suse.de (Marcus Meissner)
Subject: SUSE Security Announcement: kdebase3-kdm
 information disclosure (SUSE-SA:2006:039)


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

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                kdebase3-kdm
        Announcement ID:        SUSE-SA:2006:039
        Date:                   Mon, 03 Jul 2006 16:00:00 +0000
        Affected Products:      Novell Linux Desktop 9
                                SUSE LINUX 10.1
                                SUSE LINUX 10.0
                                SUSE LINUX 9.3
                                SUSE LINUX 9.2
                                SUSE LINUX 9.1
                                SUSE SLES 9
        Vulnerability Type:     local privilege escalation
        Severity (1-10):        7
        SUSE Default Package:   yes
        Cross-References:       CVE-2006-2449

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             KDM local information exposure
           Problem Description
        2) Solution or Work-Around
        3) Special Instructions and Notes
        4) Package Location and Checksums
        5) Pending Vulnerabilities, Solutions, and Work-Arounds:
            See SUSE Security Summary Report.
        6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

   The KDE Display Manager KDM stores the type of the previously used
   session in the user's home directory.

   By using a symlink a local attacker could trick kdm into also storing
   content of files that are normally not accessible by users, like for
   instance /etc/shadow.

   This problem is tracked by Mitre CVE ID CVE-2006-2449 and was
   found by Ludwig Nussel of the SUSE Security Team.

2) Solution or Work-Around

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

3) Special Instructions and Notes

   Please restart all running instances of kdm after the update.

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 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/kdebase3-kdm-3.5.1-69.23.i586.rpm
          6b51aa1795da71a71119cf6aa6820153

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kdebase3-kdm-3.4.2-27.4.i586.rpm
          5b36c9bc7cee1cdde72d7ad70860d596

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/kdebase3-kdm-3.4.0-28.4.i586.rpm
          f5a7cc054bf5223057e36aeef4bb2e55

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/kdebase3-kdm-3.3.0-29.5.i586.rpm
          e3b919080e181d5854526410675e116e

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kdebase3-kdm-3.2.1-68.53.i586.rpm
          247b449b8b6142ff9ee413acbd4efc57

   Power PC Platform:

   SUSE LINUX 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/kdebase3-kdm-3.5.1-69.23.ppc.rpm
          6db4614fe15867245801e17c72e9c8bd

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kdebase3-kdm-3.4.2-27.4.ppc.rpm
          6366c0536eb41220bd1686513fe6e2c1

   x86-64 Platform:

   SUSE LINUX 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/kdebase3-kdm-3.5.1-69.23.x86_64.rpm
          6c31f10bd18a53f585a1cc6ac45ccbe4

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kdebase3-kdm-3.4.2-27.4.x86_64.rpm
          f606da7a6561ec09fbbb70a467da1790

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kdebase3-kdm-3.4.0-28.4.x86_64.rpm
          fece9cedbe4033094c62124d85fe37cd

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/kdebase3-kdm-3.3.0-29.5.x86_64.rpm
          421cfc9dcacc8d1a59009cc849182297

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kdebase3-kdm-3.2.1-68.53.x86_64.rpm
          3456c10099c7c075ef2653e750f0ad72

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

   Novell Linux Desktop 9
     http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/c43d8bdde8ba418c079df014b739eaa7.html

   SUSE SLES 9
     http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/292ea0b25bd919ecf3df3ef887f35425.html

______________________________________________________________________________

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

   See SUSE Security Summary Report.
______________________________________________________________________________

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@...e.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@...e.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@...e.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@...e.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@...e.com>.

    suse-security-announce@...e.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@...e.com>.

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

    =====================================================================
    SUSE's security contact is <security@...e.com> or <security@...e.de>.
    The <security@...e.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@...e.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@...e.de>

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