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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                gtk2, gdk-pixbuf
        Announcement-ID:        SUSE-SA:2004:033
        Date:                   Wednesday, Sep 17th 2004 12:00 MEST
        Affected products:      8.1, 8.2, 9.0, 9.1
                                SUSE Linux Enterprise Server 8, 9
                                SuSE Linux Desktop 1.0
        Vulnerability Type:     remote code execution
        Severity (1-10):        9
        SUSE default package:   yes
        Cross References:       CAN-2004-0782
                                CAN-2004-0783
                                CAN-2004-0788

    Content of this advisory:
        1) security vulnerability resolved:
             - heap based overflow
             - stack based overflow
             - integer overflow
        2) solution/workaround
        3) special instructions and notes
        4) package location and checksums
        5) pending vulnerabilities, solutions, workarounds:
             - mozilla
             - mc
             - squid
             - gaim
             - nessus
        6) standard appendix (further information)

______________________________________________________________________________

1) problem description, brief discussion

    gdk-pixbuf is an image loading and rendering library mostly used
    by GTK and GNOME applications. It is distributed as a separate
    package for gtk1 and integrated into the gtk2 package. Chris
    Evans has discovered a heap based, a stack based and an integer
    overflow in the XPM and ICO loaders of those libraries. The
    overflows can be exploited by tricking an application to display
    a malformed image to make it crash or to execute code.

2) solution/workaround

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


3) special instructions and notes

    After the update packages have been installed, all applications
    linked against gdk-pixbuf libraries must be restarted.

4) package location and checksums

    Please 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 to install from the maintenance web.


    x86 Platform:

    SUSE Linux 9.1:
          6bef703af85fcded2c953e508e0fffea
          73949b52a855b2a53eb7c0abdb5a9823
    patch rpm(s):
          7326343f2db2f859a22c1c52c4b4e0ef
          a2b2cfe3f04cf45147c27a821df77f63
    source rpm(s):
          b82cc25deca74c04d074f4f1bd137349
          7dfece40e4e1ef17da8ef4a97cc57fa7

    SUSE Linux 9.0:
          ccfef6e4d79588221235028a5fc100d2
          0748a443ba301f2538650cd7145edf53
    patch rpm(s):
          87aa3c619340a1dd8e70695171eb5597
          d2be310f9f9d222ebf3979e65c23746e
    source rpm(s):
          67798c77985fbb707011c52035bc31e1
          ab9854039bbcdde141b9ddd666cc67cc

    SUSE Linux 8.2:
          bd5acc20314f84cfc5ef157dd413e103
          ecc397996e6efae04e65db962225a09b
    patch rpm(s):
          b852ce69a5927922488e8476ab538cbb
          1f8a531333bcea1931aa55458d74783a
    source rpm(s):
          cb96ca0160702b23bfa947df9dd6a75b
          19c65cf5e847efec236d5c1c1c5bf68c

    SUSE Linux 8.1:
          0deb5df027c6f5380927c688ae2015aa
          635848714d0e82daf67bbdb184b82e1c
    patch rpm(s):
          317bf98a5ee87dd6b3e62ef29144ad92
          4066bfc94676589f097b0bfe5492f2b5
    source rpm(s):
          7283265c139a32de9cc62eb9ed52d312
          0496d349d3174f8acf4e51f3c617aa59




    x86-64 Platform:

    SUSE Linux 9.1:
          510586d509e3010b24ea7ed848132291
          24fbedab59dfd403bda2492102d21487
    patch rpm(s):
          7eb6e9adc8509cd356094c460809324a
          43fc35b1805d48eb2c488033ffb05162
    source rpm(s):
          bda00431cb962a10f973f5553b94a2cf
          14a1a69061096c93f7532afc9bc3dd2d

    SUSE Linux 9.0:
          90a63449d75cbc2ab698f500eb596987
          20d0ddb67ef73a71b271e4a66fd613a2
    patch rpm(s):
          230ecdddec3899cecf93390a9922578d
          338cf1416be210ab9e3c49c7b9088074
    source rpm(s):
          851fa924bd79e6f1995797ea3d3bea52
          f90e100d97a015e065b0bb849349d59c

______________________________________________________________________________

5)  Pending vulnerabilities in SUSE Distributions and Workarounds:

     - mozilla
     We are in the process of releasing updates for mozilla (and related
     browsers), fixing various issues: CAN-2004-0597, CAN-2004-0718,
     CAN-2004-0722, CAN-2004-0757, CAN-2004-0758, CAN-2004-0759, CAN-2004-
     0760, CAN-2004-0761, CAN-2004-0762, CAN-2004-0763, CAN-2004-0764 and
     CAN-2004-0765.
     We will give you concrete details in a separate mozilla advisory when
     the updates are available.

     - mc
     The console filesystem browser mc was found vulnerable to various
     meta-char attacks in the extfs perl and shell scripts. These bugs
     can be exploited by providing a malformed archive file to a victim
     user to execute shell commands with her/his privileges.
     (CAN-2004-0494)
     New packages will be available soon.

     - squid
     Certain malformed NTLMSSP packets can crash the NTLM helpers     provided by Squid (CAN-2004-0832).
     New packages will be available soon.

     - gaim
     This security update fixes four security issues which are registered as:
       + CAN-2004-0754
         An integer overflow in the groupware message handler exists in Gaim.
       + CAN-2004-0784
         A shell escape vulnerability in the handling of smiley theme tar-
         ball filenames could lead to arbitrary command execution.
       + CAN-2004-0785
         Buffer overflows in Gaim could lead to a denial of service or
         arbitrary code execution.
     Additionally a buffer overflow in the URL parsing code of gaim is fixed.
     This bug let to remote system compromise with the privileges of the user
     running gaim.

     - nessus
     The nessus-adduser creates temporary files in $TMPDIR in an insecure
     manner.
     New packages will be available 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 disrecommend to subscribe to security lists which cause the
       email 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
       filename of the rpm package that you have downloaded. Of course,
       package authenticity verification can only target an un-installed 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  .


  - 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.
    ====================================================================