SUSE Security Summary Report SUSE-SR:2005:022

7 Oct 2005

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______________________________________________________________________________

                        SUSE Security Summary Report

        Announcement ID:        SUSE-SR:2005:022
        Date:                   Fri, 07 Oct 2005 13:00:00 +0000
        Cross-References:       CAN-2005-2966

    Content of this advisory:
        1) Solved Security Vulnerabilities:
            - resmgr usb device restriction problems
            - liby2util problems with untrusted remote repositories
            - mediawiki edit history problems
            - powersave permission problems
            - bacula tmp race fixes
            - various user applications used LD_LIBRARY_PATH unsafely
            - dia svg import code execution
        2) Pending Vulnerabilities, Solutions, and Work-Arounds:
            - none listed
        3) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Solved Security Vulnerabilities

   To avoid flooding mailing lists with SUSE Security Announcements for minor
   issues, SUSE Security releases weekly summary reports for the low profile
   vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums
   or download URLs like the SUSE Security Announcements that are released for
   more severe vulnerabilities.

   Fixed packages for the following incidents are already available on our FTP
   server and via the YaST Online Update.

   - resmgr usb device restriction problems

     resmgr is the SUSE way of providing device access to logged in
     desktop users. The following security problems were fixed in resmgr:

     - By using alternate syntax for specifying USB devices instead of a
       /proc/bus/usb path one could bypass access control rules and open
       any USB device.

     - Class specific exclude rules did not match devices that set their
       class ID at interface level.
       Therefore the default exclude rules for HID and hub devices did
       not work on many devices.

     This would allow a local attacker (logged into another X session
     or text console with desktop rights) to snoop on USB human input
     devices like keyboard or mice of other users.

     This problem affects only SUSE Linux 9.2 and 9.3.

   - liby2util problems with untrusted remote repositories

     Rene "l00m" Fischer found two problem in the handling of YaST
     package repositories.

     - The remote repositories were copied with permissions and ownerships
       intact. If the remote repository was owned by a user or had problematic
       permissions, these ownership and permissions were copied over to
       the system.

       If these included world writable permissions local users could
       overwrite package meta files.

       This problem is not present when installing from CD or a correctly
       set up network source.

     - The YaST package handling had a buffer overflow which could be
       used by attackers having access to the meta data (for instance
       due to above permission problem) to potentially execute code.

     These problems have been fixed with this update.

     All SUSE Linux based products were affected by this problem.

     A problem appeared in the SUSE Linux 9.1 update due to a symbol
     mismatch caused by incompatible changes in SUSE Linux Enterprise
     Server 9 which were not correctly merged back to SUSE Linux 9.1.
     If you are using SUSE Linux 9.1 and can no longer start YaST
     package manager or online_update, please reinstall the liby2util
     RPM from the original CD by hand.

   - Mediawiki edit history problems

     A bug in mediawiki Wiki edit submission handling could cause
     corruption of the previous revision in the database if an abnormal
     URL was used, such as those used by some spam bots.

     This mediawiki update contains fixes up to MediaWiki version 1.4.10.

     SUSE Linux 9.3 and 10.0 are affected by this problem.

   - powersave permission problems

     The powersave interfaces allows logged in desktop users to control
     certain power management functions of the machine.  A configuration
     problem of the powersave daemon in SUSE Linux 10.0 allowed any local
     user to control the powersave daemon, allowing him for instance to
     suspend the machine.  Additionally some bugs were fixed: - When doing
     CPU frequency scaling, the nice factor was not considered correctly.
     - The patch also fixes a problem were an ACPI button press was
     not ignored after coming back from sleep and so the system shut
     down again.  - If the haldaemon is not running, powersave opens
     dbus connections without closing them after wards.

     These bugs only affect SUSE Linux 10.0.

   - bacula tmp race fixes

     A fixed version of bacula was released that improves its handling
     of temporary files.

     Only SUSE Linux 10.0 is affected.

   - Various user applications used LD_LIBRARY_PATH unsafely

     Several user applications handle LD_LIBRARY_PATH unsafely. By just
     appending paths to LD_LIBRARY_PATH they caused the program to also
     search the current directory for shared libraries. In directories
     that contain network data those libraries could be injected into
     the respective application.

     We already released updates for following applications:
     - beagle for SUSE Linux 9.3 and 10.0.
     - tomboy for SUSE Linux 9.3 and 10.0.
     - liferea for SUSE Linux 10.0.
     - blam for SUSE Linux 9.3 and 10.0.
     - banshee for SUSE Linux 10.0.

     Fixes for more applications will be released.

   - dia svg import code execution

     This update of dia fixes a bug in the SVG import plugin which allows
     the execution of Python code.  (CAN-2005-2966)

     This problem only affects SUSE Linux 9.3 and 10.0.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

   none
______________________________________________________________________________

3) 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 containing 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 integrity of a
    package needs to be verified to ensure that it has not been tampered with.

    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 included at the end of this
    announcement.

  - 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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Marcus Meissner

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