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SuSE: XFree86/Xorg (SUSE-SA:2007:008) Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
SuSE This update fixes three memory corruptions within the X server which could be used by local attackers with access to this display to crash the X server and potentially execute code. The following CVEIDs are addressed by this vulnerability: CVE-2006-6101, CVE-2006-6102, CVE-2006-6103
______________________________________________________________________________

                        SUSE Security Announcement

        Package:                XFree86-server,xorg-x11-server,xloader
        Announcement ID:        SUSE-SA:2007:008
        Date:                   Fri, 12 Jan 2007 17:00:00 +0000
        Affected Products:      Novell Linux Desktop 9
                                Novell Linux POS 9
                                Open Enterprise Server
                                openSUSE 10.2
                                SUSE LINUX 10.1
                                SUSE LINUX 10.0
                                SUSE LINUX 9.3
                                SuSE Linux Desktop 1.0
                                SuSE Linux Enterprise Server 8
                                SuSE Linux Openexchange Server 4
                                SUSE LINUX Retail Solution 8
                                SuSE Linux School Server
                                SuSE Linux Standard Server 8
                                SUSE SLED 10
                                SUSE SLES 10
                                SUSE SLES 9
                                UnitedLinux 1.0
        Vulnerability Type:     local privilege escalation
        Severity (1-10):        7
        SUSE Default Package:   yes
        Cross-References:       CVE-2006-6101, CVE-2006-6102, CVE-2006-6103

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             X integer overflows
           Problem Description
        2) Solution or Work-Around
        3) Special Instructions and Notes
        4) Package Location and Checksums
        5) Pending Vulnerabilities, Solutions, and Work-Arounds:
            - fetchmail security problems
            - Opera 9.10 security update
            - Acrobat Reader XSS issues
        6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

   This update fixes three memory corruptions within the X server which
   could be used by local attackers with access to this display to crash
   the X server and potentially execute code.

   CVE-2006-6101: Integer overflow in the ProcRenderAddGlyphs function
                  in the Render extension for X.Org 6.8.2, 6.9.0, 7.0,
                  and 7.1, and XFree86 X server, allows local users to
                  execute arbitrary code via a crafted X protocol request
                  that triggers memory corruption during processing of
                  glyph management data structures.

   CVE-2006-6102: Integer overflow in the ProcDbeGetVisualInfo function
                  in the DBE extension for X.Org 6.8.2, 6.9.0, 7.0,
                  and 7.1, and XFree86 X server, allows local users to
                  execute arbitrary code via a crafted X protocol request
                  that triggers memory corruption during processing of
                  unspecified data structures.

   CVE-2006-6103: Integer overflow in the ProcDbeSwapBuffers function in
                  the DBE extension for X.Org 6.8.2, 6.9.0, 7.0, and 7.1,
                  and XFree86 X server, allows local users to execute
                  arbitrary code via a crafted X protocol request
                  that triggers memory corruption during processing of
                  unspecified data structures.

2) Solution or Work-Around

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

3) Special Instructions and Notes

   Please close and restart all running instances of X11 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 

   to apply the update, replacing  with the filename of the
   downloaded RPM package.


   x86 Platform:

   openSUSE 10.2:
   ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/xorg-x11-server-7.2-30.4.i586.rpm
          58a6c5df853248cf8b288c3b42418ed4

   SUSE LINUX 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/xorg-x11-server-6.9.0-50.30.i586.rpm
          73150d439b17768c2a634b3a6d2bc9e0

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xorg-x11-server-6.8.2-100.10.i586.rpm
          de6c0a54f56c216296ff9a7b3a3dc571

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/xorg-x11-server-6.8.2-30.10.i586.rpm
          cb05dbcf305d096cfea12acc7d250483

   Power PC Platform:

   openSUSE 10.2:
   ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/xorg-x11-server-7.2-30.4.ppc.rpm
          af51406c70d92459c507718946883156

   SUSE LINUX 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/xorg-x11-server-6.9.0-50.30.ppc.rpm
          c93f29c703d5a9ab6c05f6348df42d3b

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/xorg-x11-server-6.8.2-100.10.ppc.rpm
          122c81ed707559eb873a511ec7a381a1

   x86-64 Platform:

   openSUSE 10.2:
   ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/xorg-x11-server-7.2-30.4.x86_64.rpm
          2096f490f773d96e5a11cf9e715bdd74

   SUSE LINUX 10.1:
   ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/xorg-x11-server-6.9.0-50.30.x86_64.rpm
          68ac3ff1bfa31483f016c62d72e934a3

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xorg-x11-server-6.8.2-100.10.x86_64.rpm
          37cfc2641f53d9a70c8e437b58e2823f

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/xorg-x11-server-6.8.2-30.10.x86_64.rpm
          864dc49e5a969a737efefc7c2a1fa3d6

   Sources:

   openSUSE 10.2:
   ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/xorg-x11-server-7.2-30.4.src.rpm
          7539d15ac32aa71a3dbbe23dd39854aa

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

   Open Enterprise Server
     http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

   Novell Linux POS 9
     http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

   Novell Linux Desktop 9
     http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

   SuSE Linux Desktop 1.0
     http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

   SUSE SLES 9
     http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

   UnitedLinux 1.0
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SuSE Linux Openexchange Server 4
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SuSE Linux Enterprise Server 8
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SuSE Linux Standard Server 8
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SuSE Linux School Server
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SUSE LINUX Retail Solution 8
     http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

   SUSE SLES 10
     http://support.novell.com/techcenter/psdb/8d278592fd99987cae177d85827bdf26.html

   SUSE SLED 10
     http://support.novell.com/techcenter/psdb/8d278592fd99987cae177d85827bdf26.html

______________________________________________________________________________

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

   - fetchmail security problems
     The POP3/IMAP client fetchmail had two security issues fixed:

     - Incorrect SSL handling could allow a man in the middle attack
       against fetchmail or could expose passwords and similar
       when too trivial encryption would be selected. (CVE-2006-5867)

     - A fetchmail daemon might crash when using direct MDA
       delivery. (CVE-2006-5974)

     We are preparing updates for these problems.

   - Opera 9.10 security update
     The Opera webbrowser was released in version 9.10 and only after
     some days it was known that it also fixes security problems.

     We are preparing Opera updates to version 9.10.

   - Acrobat Reader XSS issues
     Various Cross Site Scripting issues and potential code execution
     issues were found in the Acrobat Reader Plugin.

     We are preparing updates to update Acrobat Reader to version 7.0.9
     currently.
______________________________________________________________________________

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 

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

      gpg: Signature made  using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team "

    where  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 

       to verify the signature of the package, replacing  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 

       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:

    opensuse-security@opensuse.org
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                .

    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's security contact is  or .
    The  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.
 
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