TUCoPS :: HP Unsorted X :: b06-1984.htm

Xorg-x11-server (suse-sa:2006:023)
SUSE Security Announcement: xorg-x11-server (SUSE-SA:2006:023)
SUSE Security Announcement: xorg-x11-server (SUSE-SA:2006:023)




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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                xorg-x11-server
        Announcement ID:        SUSE-SA:2006:023
        Date:                   Wed, 03 May 2006 10:00:00 +0000
        Affected Products:      SUSE LINUX 10.0
                                SUSE LINUX 9.3
                                SUSE LINUX 9.2
        Vulnerability Type:     local privilege escalation
        Severity (1-10):        7
        SUSE Default Package:   yes
        Cross-References:       CVE-2006-1526

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             Buffer overflow in the X.Org X11 server
           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

   Miscalculation of a buffer size in the X Render extension of the
   X.Org X11 server could potentially be exploited by users to cause a
   buffer overflow and run code with elevated privileges.

2) Solution or Work-Around

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

3) Special Instructions and Notes

   Please restart the X server by logging out or rebooting 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:
   
   SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xorg-x11-server-6.8.2-100.5.i586.rpm 
          44c3b8dcb2b6a402d76364fd1d93494c
   
   SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/xorg-x11-server-6.8.2-30.5.i586.rpm 
          f741187e9f45443f6da22f6c581eb2a9
   
   SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/xorg-x11-server-6.8.1-15.10.i586.rpm 
          4809ccda14af35911d03d58cca61d734
   
   Power PC Platform:
   
   SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/xorg-x11-server-6.8.2-100.5.ppc.rpm 
          0cb1e49e97ad623163649b8dd7052032
   
   x86-64 Platform:
   
   SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xorg-x11-server-6.8.2-100.5.x86_64.rpm 
          fc09f74f782b734692934b74cf7f0da5
   
   SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/xorg-x11-server-6.8.2-30.5.x86_64.rpm 
          1ee01c4d810ebf997caf767390ca1743
   
   SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/xorg-x11-server-6.8.1-15.10.x86_64.rpm 
          db7c539b47dd0cbd0d190a5c587a2d09

______________________________________________________________________________

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 

    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:

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-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
. 

    For general information or the frequently asked questions (FAQ),
send mail to  or 
. 

==================================================================== 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.

Type Bits/KeyID     Date       User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team  
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key  

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