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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                xshared, XFree86-libs, xorg-x11-libs
        Announcement-ID:        SUSE-SA:2004:041
        Date:                   Wednesday, Nov 17th 2004 15:00 MET
        Affected products:      8.1, 8.2, 9.0, 9.1, 9.2
                                SUSE Linux Desktop 1.0
                                SUSE Linux Enterprise Server 8, 9
                                Novell Linux Desktop 1.0
        Vulnerability Type:     remote system compromise
        Severity (1-10):        8
        SUSE default package:   yes
        Cross References:        none

    Content of this advisory:
        1) security vulnerability resolved:
             - several integer overflows
             - out-of-bounds memory access
             - shell command execution
             - path traversal
             - endless loops
             - memory leaks
           problem description
        2) solution/workaround
        3) special instructions and notes
        4) package location and checksums
        5) pending vulnerabilities, solutions, workarounds:
            - ImageMagick
            - clamav
            - perl-MIME-Tools, perl-Archive-ZIP
            - apache / mod_include
            - apache2 / mod_SSL
        6) standard appendix (further information)

______________________________________________________________________________

1) problem description, brief discussion

    The XPM library which is part of the XFree86/XOrg project is used by
    several GUI applications to process XPM image files.
    A source code review done by Thomas Biege of the SuSE Security-Team
    revealed several different kinds of bugs.
    The bug types are:
             - integer overflows
             - out-of-bounds memory access
             - shell command execution
             - path traversal
             - endless loops
    By providing a special image these bugs can be exploited by remote and/or
    local attackers to gain access to the system or to escalate their local
    privileges.
    

2) solution/workaround

    No workaround exists to protect against these bugs.
    
    
3) special instructions and notes

    Please restart the X server or switch to runlevel 3 and back to 5 to make
    sure every GUI application is restarted and uses the new library.
    
    
4) package location and checksums

    Download the update package for your distribution and verify its
    integrity by the methods listed in section 3) of this announcement.
    Then, install the package using the command "rpm -Fhv file.rpm" to apply
    the update.
    Our maintenance customers are being notified individually. The packages
    are being offered for installation from the maintenance web.

    Smalltalk is the only package using libxpm statically. It will be
    available via YOU too.

        
    x86 Platform:

    SUSE Linux 9.2:
          395edf444f05b448aa7c7e70455333ce
    patch rpm(s):
          8d215ce255838120c70ba77ad944a84f
    source rpm(s):
          3889aee5895035c57c716f370f5e414a

    SUSE Linux 9.1:
          89431783cd8261a970d6ec5484dd09e6
    patch rpm(s):
          8ea579d10465143a2334be812f23561e
    source rpm(s):
          a37eaa7e7b99c5c3e61439f2a4b00b2d

    SUSE Linux 9.0:
          a12b2e861f114868fd70997f72536c8b
    patch rpm(s):
          c6ea49a796b316aa68dacc51ffd8eb8d
    source rpm(s):
          f53026511a470b875b0f9a63c52128d3

    SUSE Linux 8.2:
          b918f14df14961cf89528a930f49d7c4
    patch rpm(s):
          9c9c268bb248f1bcf2ef899ced2d5aa4
    source rpm(s):
          9a7846ddf22d58f9f64704b3a2451640

    SUSE Linux 8.1:
          d4549acb039d8bf317bc6052598764c9
    patch rpm(s):
          fcfc17915fdddb48ea84e4d528752edc
    source rpm(s):
          3e1d6cf799d0a8e10e2597458264812e



    x86-64 Platform:

    SUSE Linux 9.2:
          e1a271567b2c784aedf3b10f60bbf8a1
    patch rpm(s):
          fe95d10e1287ebbe56ba8d7a07954431
    source rpm(s):
          da697a970a5672a96016fff405f72692

    SUSE Linux 9.1:
          37b2d73337bd0d70dcc092c0e15a0911
    patch rpm(s):
          d72e54995bd6468cf1ea78da81546a69
    source rpm(s):
          0158b2653157f518f8dcf030927c2107

    SUSE Linux 9.0:
          06a4fd1bd6eeb43fd82e18b9a255ff78
    patch rpm(s):
          da96d1c51020a7de70195458b197fa3b
    source rpm(s):
          f369153e40af338af2fd67957db09cff
          
______________________________________________________________________________

5)  Pending vulnerabilities in SUSE Distributions and Workarounds:

    - ImageMagick
      This update fixes an additional problem in the EXIF handling of
      ImageMagick, which could lead to a buffer overflow. This could enable
      remote attackers feeding handcrafted images to execute code as the
      user handling the image.
      New packages are available.
      
    - clamav
      The clamav version shipped with SUSE Linux is too old for the new
      data files. The version has been upgraded to 0.80.

    - perl-Mime-Tools / perl-Archive-ZIP
      Problems in the perl-MIME-Tools and perl-Archive-ZIP packages have
      been found which could allow virii to pass virus scanners using those
      packages (like for instance clamav). Fixed packages are in testing
      and will be released soon.

    - Apache 1.3 / mod_include
      A potential buffer overflow and a argument sanitization problem
      were found in the mod_include Apache 1.3 module. These issues
      are tracked as CAN-2004-0940 and CAN-2004-0492 by Mitre CVE.
      Fixed packages are in testing and will be released soon.

    - Apache 2 / mod_SSL
      SSL Ciphersuite bypass problems were identified and fixed by the
      Apache team in Apache 2. This is tracked under the Mitre CVE ID
      CAN-2004-0885. Fixed packages are in testing and will be released
      soon.
______________________________________________________________________________

6)  standard appendix: authenticity verification, additional information

  - Package authenticity verification:

    SUSE update packages are available on many mirror ftp servers all over
    the world. While this service is being considered valuable and important
    to the free and open source software community, many users wish to be
    sure about the origin of the package and its content before installing
    the package. 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) md5sums as provided in the (cryptographically signed) announcement.
    2) using the internal gpg signatures of the rpm package.

    1) 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
       announcement. Since the announcement containing the checksums is
       cryptographically signed (usually using the key security@suse.de),
       the checksums show proof of the authenticity of the package.
       We recommend against subscribing to security lists that cause the
       e-mail message containing the announcement to be modified
       so that the signature does not match after transport through the mailing
       list software.
       Downsides: You must be able to verify the authenticity of the
       announcement in the first place. If RPM packages are being rebuilt
       and a new version of a package is published on the ftp server, all
       md5 sums for the files are useless.

    2) 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, where  is the
       file name of the rpm package that you have downloaded. Of course,
       package authenticity verification can only target an uninstalled rpm
       package file.
       Prerequisites:
        a) gpg is installed
        b) The package is signed using a certain key. The public part of this
           key must be installed by the gpg program in the directory
           ~/.gnupg/ under the user's home directory who performs the
           signature verification (usually root). You can import the key
           that is used by SUSE in rpm packages for SUSE Linux by saving
           this announcement to a file ("announcement.txt") and
           running the command (do "su -" to be root):
            gpg --batch; gpg < announcement.txt | gpg --import
           SUSE Linux distributions version 7.1 and thereafter install the
           key "build@suse.de" upon installation or upgrade, provided that
           the package gpg is installed. The file containing the public key
           is placed at the top-level directory of the first CD (pubring.gpg)
           and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .


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

    suse-security@suse.com
        -   general/linux/SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an email 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 email to
                .

    For general information or the frequently asked questions (faq) 
    send mail to:
         or
         respectively.

    ====================================================================    SUSE's security contact is  or .
    The  public key is listed below.
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