-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                kernel
        Announcement-ID:        SUSE-SA:2004:020
        Date:                   Tuesday, Jul 2nd 2004 18:00 MEST
        Affected products:      8.0, 8.1, 8.2, 9.0, 9.1
                                SUSE Linux Database Server,
                                SUSE eMail Server III, 3.1
                                SUSE Linux Enterprise Server 7, 8
                                SUSE Linux Firewall on CD/Admin host
                                SUSE Linux Connectivity Server
                                SUSE Linux Office Server
        Vulnerability Type:     local privilege escalation
        Severity (1-10):        6
        SUSE default package:   yes
        Cross References:  CAN-2004-0495
        CAN-2004-0496
        CAN-2004-0497
        CAN-2004-0535
        CAN-2004-0626


    Content of this advisory:
        1) security vulnerability resolved:
    - chown: users can change the group affiliation of arbitrary
      files to the group they belong to
    - missing DAC check in chown(2): local privilege escalation
          - overflow with signals: local denial-of-service
          - pss, mpu401 sound driver: read/write to complete memory
          - airo driver: read/write to complete memory
          - ALSA: copy_from_user/copy_to_user confused
          - acpi_asus: read from random memory
          - decnet: write to memory without checking
          - e1000 driver: read complete memory
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
    - icecast
                - sitecopy
                - cadaver
                - OpenOffice_org
                - tripwire
                - postgresql*
                - mod_proxy
    - freeswan
    - ipsec-tools
    - less
    - libpng
    - pavuk
    - XFree86*
    - kdebase3
        3) standard appendix (further information)

______________________________________________________________________________

1)  problem description, brief discussion, solution, upgrade information

    Multiple security vulnerabilities are being addressed with this security
    update of the Linux kernel.

    Kernel memory access vulnerabilities are fixed in the e1000, decnet, 
    acpi_asus, alsa, airo/WLAN, pss and mpu401 drivers. These 
    vulnerabilities can lead to kernel memory read access, write access 
    and local denial of service conditions, resulting in access to the 
    root account for an attacker with a local account on the affected 
    system.

    Missing Discretionary Access Control (DAC) checks in the chown(2) system
    call allow an attacker with a local account to change the group
    ownership of arbitrary files, which leads to root privileges on affected
    systems. It is specific to kernel version 2.6 based systems such as 
    the SUSE Linux 9.1 product, that only local shell access is needed to 
    exploit this vulnerability. An interesting variant of the missing 
    checks is that the ownership of files in the /proc filesystem can be 
    altered, while the changed ownership still does not allow the files to 
    be accessed as a non-root user for to be able to exploit the 
    vulnerability. Systems that are based on a version 2.4 kernel are not 
    vulnerable to the /proc weakness, and exploitation of the weakness 
    requires the use of the kernel NFS server (knfsd). If the knfsd NFS 
    server is not activated (it is off by default), the vulnerability is 
    not exposed. These issues related to the chown(2) system call have been 
    discovered by Michael Schroeder and Ruediger Oertel, both SUSE LINUX.

    The only network-related vulnerability fixed with the kernel updates
    that are subject to this announcement affect the SUSE Linux 9.1 
    distribution only, as it is based on a 2.6 kernel. Found and reported 
    to bugtraq by Adam Osuchowski and Tomasz Dubinski, the vulnerability 
    allows a remote attacker to send a specially crafted TCP packet to a 
    vulnerable system, causing that system to stall if it makes use of 
    TCP option matching netfilter rules.

    In some rare configurations of the SUSE Linux 9.1 distribution, some 
    users have experienced stalling systems during system startup. These 
    problems are fixed with this kernel update.



    SPECIAL INSTALL INSTRUCTIONS:
    ==============================
    For the impatient: Run YOU (Yast2 Online Update, command 
    "yast2 online_update" as root) to install the updates (semi) 
    automatically, if you have a SUSE Linux 8.1 and newer system.

    For those who wish to install their kernel updates manually and for 
    those who use a SUSE Linux 8.0 system:

    The following paragraphs will guide you through the installation
    process in a step-by-step fashion. The character sequence "****"
    marks the beginning of a new paragraph. In some cases, the steps
    outlined in a particular paragraph may or may not be applicable
    to your situation.
    Therefore, please make sure to read through all of the steps below
    before attempting any of these procedures.
    All of the commands that need to be executed are required to be
    run as the superuser (root). Each step relies on the steps before
    it to complete successfully.


  **** Step 1: Determine the needed kernel type

    Please use the following command to find the kernel type that is
    installed on your system:

      rpm -qf /boot/vmlinuz

    Following are the possible kernel types (disregard the version and
    build number following the name separated by the "-" character)

      k_deflt   # default kernel, good for most systems.
      k_i386    # kernel for older processors and chipsets
      k_athlon  # kernel made specifically for AMD Athlon(tm) family processors
      k_psmp    # kernel for Pentium-I dual processor systems
      k_smp     # kernel for SMP systems (Pentium-II and above)
      k_smp4G   # kernel for SMP systems which supports a maximum of 4G of RAM
      kernel-64k-pagesize
      kernel-bigsmp
      kernel-default
      kernel-smp

  **** Step 2: Download the package for your system

    Please download the kernel RPM package for your distribution with the
    name as indicated by Step 1. The list of all kernel rpm packages is
    appended below. Note: The kernel-source package does not
    contain a binary kernel in bootable form. Instead, it contains the
    sources that the binary kernel rpm packages are created from. It can be
    used by administrators who have decided to build their own kernel.
    Since the kernel-source.rpm is an installable (compiled) package that
    contains sources for the linux kernel, it is not the source RPM for
    the kernel RPM binary packages.

    The kernel RPM binary packages for the distributions can be found at the
    locations below ftp://ftp.suse.com/pub/suse/i386/update/.

      8.0/images/
      8.1/rpm/i586
      8.2/rpm/i586
      9.0/rpm/i586
      9.1/rpm/i586

    After downloading the kernel RPM package for your system, you should
    verify the authenticity of the kernel rpm package using the methods as
    listed in section 3) of each SUSE Security Announcement.


  **** Step 3: Installing your kernel rpm package

    Install the rpm package that you have downloaded in Steps 3 or 4 with
    the command
        rpm -Uhv --nodeps --force <K_FILE.RPM>
    where <K_FILE.RPM> is the name of the rpm package that you downloaded.

    Warning: After performing this step, your system will likely not be
             able to boot if the following steps have not been fully
             followed.


    If you run SUSE LINUX 8.1 and haven't applied the kernel update
    (SUSE-SA:2003:034), AND you are using the freeswan package, you also
    need to update the freeswan rpm as a dependency as offered
    by YOU (YaST Online Update). The package can be downloaded from
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/

  **** Step 4: configuring and creating the initrd

    The initrd is a ramdisk that is loaded into the memory of your
    system together with the kernel boot image by the bootloader. The
    kernel uses the content of this ramdisk to execute commands that must
    be run before the kernel can mount its actual root filesystem. It is
    usually used to initialize SCSI drivers or NIC drivers for diskless
    operation.

    The variable INITRD_MODULES in /etc/sysconfig/kernel determines
    which kernel modules will be loaded in the initrd before the kernel
    has mounted its actual root filesystem. The variable should contain
    your SCSI adapter (if any) or filesystem driver modules.

    With the installation of the new kernel, the initrd has to be
    re-packed with the update kernel modules. Please run the command

      mk_initrd

    as root to create a new init ramdisk (initrd) for your system.
    On SuSE Linux 8.1 and later, this is done automatically when the
    RPM is installed.


  **** Step 5: bootloader

    If you run a SUSE LINUX 8.x, SLES8, or SUSE LINUX 9.x system, there
    are two options:
    Depending on your software configuration, you have either the lilo
    bootloader or the grub bootloader installed and initialized on your
    system.
    The grub bootloader does not require any further actions to be
    performed after the new kernel images have been moved in place by the
    rpm Update command.
    If you have a lilo bootloader installed and initialized, then the lilo
    program must be run as root. Use the command

      grep LOADER_TYPE /etc/sysconfig/bootloader

    to find out which boot loader is configured. If it is lilo, then you
    must run the lilo command as root. If grub is listed, then your system
    does not require any bootloader initialization.

    Warning: An improperly installed bootloader may render your system
             unbootable.

  **** Step 6: reboot

    If all of the steps above have been successfully completed on your
    system, then the new kernel including the kernel modules and the
    initrd should be ready to boot. The system needs to be rebooted for
    the changes to become active. Please make sure that all steps have
    completed, then reboot using the command
        shutdown -r now
    or
        init 6

    Your system should now shut down and reboot with the new kernel.


    There is no workaround known.


    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:
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-default-2.6.5-7.95.i586.rpm
      800418d3dddf6d3b83925f562842205a
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-smp-2.6.5-7.95.i586.rpm
      0cb990b159e10685bb29b76d312ddd25
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm
      7446bb70f52bce57a914066be4ed8e45
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm
      7446bb70f52bce57a914066be4ed8e45
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-source-2.6.5-7.95.i586.rpm
      ede031495ee19d8b6eca1873e7155332
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm
      620ef40226fec31a773397cf3051bf36
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm
      9b61b5a70b304f5554cb18a6bae5b5fd
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-bigsmp-2.6.5-7.95.nosrc.rpm
      227c85280ee17a66c8590fe1bb14c596
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm
      895fee3033de0810ff1173ce8ee87936

    SUSE Linux 9.0:
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_deflt-2.4.21-231.i586.rpm
      48be395b96329909486ae3a5152348fa
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_athlon-2.4.21-231.i586.rpm
      4cd322b4f511d5fe4c483ed28a82097e
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp-2.4.21-231.i586.rpm
      262e33cebf1b0d35fb6d3235c9ab8815
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp4G-2.4.21-231.i586.rpm
      8d81370f90736b12aa71b9c744f6e0e2
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_um-2.4.21-231.i586.rpm
      bc59c838c84ba318dc4d24da08a3022e
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/kernel-source-2.4.21-231.i586.rpm
      f9586ba982e0398c3e48871955b661aa
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm
      18673b0bf347fe9557d4e67ca02000c0
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_athlon-2.4.21-231.src.rpm
      71496daac44196b0e0a3836ee6a3b4ed
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm
      7c208e9e3f7be1a68c3c8457eb2cafc4
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp4G-2.4.21-231.src.rpm
      b77863c863aaf4b931bff263220e6ec9
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_um-2.4.21-231.src.rpm
      bed7e964e22c5e5d2f5e7a5e3816dde4
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm
      6b5137bf379fbfc861441151039575da

    SUSE Linux 8.2:
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_deflt-2.4.20-115.i586.rpm
      50d261b44616f9145a0dc16df501a504
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_athlon-2.4.20-115.i586.rpm
      10095854c0bdae20991d90b822352e14
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_smp-2.4.20-115.i586.rpm
      a2ef7cfb0e62ad955dda2b0574eb3150
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_psmp-2.4.20-115.i586.rpm
      1d2b0d0e2c7998685ed04c24e593b196
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/kernel-source-2.4.20.SuSE-115.i586.rpm
      d8bf98c46ba5313db286d5706f7fb3b8
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_deflt-2.4.20-115.src.rpm
      e13a7b4c2b185cfeb991c31607f79ccb
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_athlon-2.4.20-115.src.rpm
      0e2f2cf20e7d7a20f3e50b245105df61
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_smp-2.4.20-115.src.rpm
      6cfac2914d3827ec562ff9d6be29c566
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_psmp-2.4.20-115.src.rpm
      afd29843aa69d805ef5f25d39ecd0e7f
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/kernel-source-2.4.20.SuSE-115.src.rpm
      098a1400a48404931acb8b3eb2e821fb

    SUSE Linux 8.1:
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_deflt-2.4.21-231.i586.rpm
      3bdaa593d09a7cbff632a2c4446d5603
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_athlon-2.4.21-231.i586.rpm
      ba60d0b2b6d3bc9c38b4e8b3859e1586
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_smp-2.4.21-231.i586.rpm
      ffa8983669004826a0cbedbe34dced76
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_psmp-2.4.21-231.i586.rpm
      25174fd007f5a39ee0342dd6f18f2eaa
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/kernel-source-2.4.21-231.i586.rpm
      10837fa561cd5104e55d48e46c837764
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_deflt-2.4.21-231.src.rpm
      c37e8b87819602e77b14206affef00fa
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_athlon-2.4.21-231.src.rpm
      7be68a677db5a65be1a46ec194b35497
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_smp-2.4.21-231.src.rpm
      8e4b7d5a6bb81da5a00971cdcc4ec641
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_psmp-2.4.21-231.src.rpm
      d8ba1db81a9b517f867c970e4fc443a7
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/kernel-source-2.4.21-231.src.rpm
      96a0a9242d066083c7bff8e0f70b7bbe

    SUSE Linux 8.0:
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_deflt-2.4.18-303.i386.rpm
      ec1e53b3812c0c0bd3681435d69fb134
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_smp-2.4.18-303.i386.rpm
      583164e52019ae090fd47e425c2a933e
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_psmp-2.4.18-303.i386.rpm
      9ac8983abef05697d75f3117e37e5f18
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_i386-2.4.18-303.i386.rpm
      4932c4d6a42fc9be02013f398ab5bb96
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/kernel-source-2.4.18.SuSE-303.i386.rpm
      b9de0731f9bbc4b016455a6d52cd8296
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_deflt-2.4.18-303.src.rpm
      a73bacad80432c26e856c41338b154bd
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_smp-2.4.18-303.src.rpm
      782902cd14e7776db66bd61a12beee03
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_psmp-2.4.18-303.src.rpm
      d71fa5cda488ae18f8d023cd8f28bb73
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_i386-2.4.18-303.src.rpm
      a360a9e6ed2db54f69e17db36f02614f
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/kernel-source-2.4.18.SuSE-303.nosrc.rpm
      8017fd6ff8a6fc1a0660ab35ad174388



    x86-64 Platform:

    SUSE Linux 9.1:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-default-2.6.5-7.95.x86_64.rpm
      e2c53fd24991f739fd754c07f7aa8293
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-smp-2.6.5-7.95.x86_64.rpm
      f4a69622b7628cdd662a4e39aa59b60e
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-source-2.6.5-7.95.x86_64.rpm
      e71adfb1fc662600eb11d3acf67c3dc3
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm
      f6a364879d1f2ae2cf854810d61be3ac
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm
      a0096d1fc067d89c9200ea3904713d59
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm
      bf6d0439cfc37b50b4f6822c3403a74f

    SUSE Linux 9.0:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_deflt-2.4.21-231.x86_64.rpm
      17e008a737e5e95e71335e34fa7f86cf
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_smp-2.4.21-231.x86_64.rpm
      ca742b550b1a503595b02cbfc9e0e481
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/kernel-source-2.4.21-231.x86_64.rpm
      8e0c16c42d1a89aa6a09be1dd575de47
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm
      58b1bf42b5661119d06a04888144707a
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm
      5103001136e39fca5a59f4cbde82822b
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm
      231c9e5e00f17df8cfd72d6c8a68d9cf


______________________________________________________________________________

2)  Pending vulnerabilities in SUSE Distributions and Workarounds:

    - icecast
    The icecast service is vulnerable to a remote denial-of-service
    attack. Update packages will be available soon.

    - sitecopy
    The sitecopy package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
    available soon.

    - cadaver
    The cadaver package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
    available soon.

    - OpenOffice_org
    The OpenOffice_org package includes a vulnerable version
    of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages
    will be available soon.

    - tripwire
    A format string bug in tripwire can be exploited locally
    to gain root permissions.
    New packages are available.

    - postgresql
    A buffer overflow in psqlODBC could be exploited to crash the
    application using it. E.g. a PHP script that uses ODBC to access a
    PostgreSQL database can be utilized to crash the surrounding Apache
    web-server. Other parts of PostgreSQL are not affected.
    New packages are available.

    - XDM/XFree86
    This update resolves random listening to ports by XDM
    that allows to connect via the XDMCP. SUSE LINUX 9.1
    is affected only.
    New packages are available.

    - mod_proxy
    A buffer overflow can be triggered by malicious remote
    servers that return a negative Content-Length value.
    This vulnerability can be used to execute commands remotely
    New packages are available.

    - freeswan
    A bug in the certificate chain authentication code could allow an
    attacker to authenticate any host against a FreeS/WAN server by
    presenting specially crafted certificates wrapped in a PKCS#7 file.
    The packages are currently being tested and will be available soon.

    - ipsec-tools
    The racoon daemon which is responsible for handling IKE messages
    fails to reject invalid or self-signed X.509 certificates which
    allows for man-in-the-middle attacks on IPsec tunnels established
    via racoon.
    The packages are currently being tested and will be available soon.

    - less
    This update fixes a possible symlink attack in lessopen.sh. The
    attack can be executed by local users to overwrite arbitrary files
    with the privileges of the user running less.
    New packages are available.

    - libpng
    This update adds a missing fix for CAN-2002-1363.
    New packages are available.

    - pavuk
    This update fixes a remotely exploitable buffer overflow in pavuk.
    Thanks to Ulf Harnhammar for reporting this to us.
    New packages are available.

    - kdebase3
    This update fixes a possible attack on tmp files created at the
    first login of a user using KDE or at the first time running a
    KDE application. This bug can be exploited locally to overwrite
    arbitrary files with the privilege of the victim user.
    Just affects SUSE LINUX 9.1
    New packages are available.

______________________________________________________________________________

3)  standard appendix: authenticity verification, additional information

  - Package authenticity verification:

    SUSE update packages are available on many mirror ftp servers around
    the world. While this service is considered valuable and important
    to the free and open source software community, many users wish to be
    certain as to be the origin of the package and its content before
    installing the package. There are two independent verification methods
    that can be used 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 <name-of-the-file.rpm>
       after you have 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 offer proof of the authenticity
       of the package.
       We recommend against subscribing 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 <file.rpm>
       to verify the signature of the package, where <file.rpm> 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 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-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 email 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> respectively.

    =====================================================================
    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,
    it is desired that the clear-text signature must show proof of the
    authenticity of the text.
    SUSE Linux AG makes 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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- -- 
 -                                                                      -
| Roman Drahtmüller      <draht@suse.de> // "You don't need eyes to see, |
  SUSE Linux AG - Security       Phone: //             you need vision!"
| Nürnberg, Germany     +49-911-740530 //           Maxi Jazz, Faithless |
 -                                                                      -
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