SUSE Security Announcement: multiple Mozilla Firefox vulnerabilities (SUSE-SA:2005:016)

16 Mar 2005

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

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                Mozilla Firefox
        Announcement-ID:        SUSE-SA:2005:016
        Date:                   Wed, 16 Mar 2005 13:00:00 +0000
        Affected products:      9.0, 9.1, 9.2
                                Novell Linux Desktop 9
        Vulnerability Type:     remote code execution
        Severity (1-10):        7
        SUSE default package:   yes
        Cross References:       CAN-2005-0231
                                CAN-2005-0232
                                CAN-2005-0233
                                CAN-2005-0255

    Content of this advisory:
        1) security vulnerability resolved:
             several vulnerabilities in Mozilla Firefox
           problem description
        2) solution/workaround
        3) special instructions and notes
        4) package location and checksums
        5) pending vulnerabilities, solutions, workarounds:
            See SUSE Security Summary Report.

        6) standard appendix (further information)

______________________________________________________________________________

1) problem description, brief discussion

    This security update for Mozilla Firefox fixes following problems:

    - CAN-2005-0231: "Fire tabbing"
      The javascript security manager usually prevents that a javascript:
      URL from one host is opened in a window displaying content from
      another host. But when the link is dropped to a tab, the security
      manager does not kick in.

      This can lead to several security problems scaling from stealing
      session cookies to the ability to run arbitrary code on the client
      system (depending on the displayed site or security settings).

    - CAN-2005-0232: "Fire flashing"

      Using plugins like Flash and the -moz-opacity filter it is possible
      to display the about:config site in a hidden frame or a new window.

      By making the user double-click at a specific screen position
      (e.g. using a DHTML game) you can silently toggle the status of
      boolean config parameters.

    - CAN-2005-0233: "homograph attacks" / "IDN cloaking"

      Attackers may spoof host names by using translated host name
      representation which look exactly the same as the original host,
      allowing phishing attacks or similar.

      We now show both IDN punycode and visible form of the host name.

    - CAN-2005-0255:

      Attackers could cause overflows or crashes in low memory situations.

    - Added additional Firefox bugfixes from the 1.0.1 release.

   Only the listed distributions are affected, others do not ship 
   Mozilla Firefox.

   Also note that Firefox was called Firebird in SUSE Linux 9.0.

2) solution/workaround

    Please install the updated packages. There is no workaround (except
    using a different browser).

3) special instructions and notes

    Make sure you restart the browser after installing the update.

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 9.2:
    ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/MozillaFirefox-1.0.1-9.1.i586.rpm
           03340b9512cc1aef8dc2a100bf66631c

    SUSE Linux 9.1:
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/MozillaFirefox-1.0.1-9.1.i586.rpm
           93d751acabec7807a9b0bc247c9084a3
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/MozillaFirefox-1.0.1-9.1.src.rpm
           2af47975159426d15cc8c3e40b3877b5

    SUSE Linux 9.0:
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/MozillaFirebird-1.0.1-2.i586.rpm
           4731ff8ce252e7535bb94e0d2998b125
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/MozillaFirebird-1.0.1-2.src.rpm
           2f60d898cd6f8da2bb98e84d6f1a9a8f

    x86-64 Platform:

    SUSE Linux 9.2:
    ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/MozillaFirefox-1.0.1-9.1.x86_64.rpm
           ad04f06e87d2c681672d7264675daabf
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/MozillaFirefox-1.0.1-9.1.src.rpm
           44be2cc4c2faae20063b0777b95fd8bd

    SUSE Linux 9.1:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/MozillaFirefox-1.0.1-9.1.x86_64.rpm
           63c8105d5b6cc13c38039f91da57ed12
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/MozillaFirefox-1.0.1-9.1.src.rpm
           2a3dffc30e5e000bd9b52fb96cd280ce

    SUSE Linux 9.0:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/MozillaFirebird-1.0.1-2.x86_64.rpm
           c4bfada21e489e50929b8036f50678c1
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/MozillaFirebird-1.0.1-2.src.rpm
           ea1efdfe7964b25d34954644e30f9817

______________________________________________________________________________

5)  Pending vulnerabilities in SUSE Distributions and Workarounds:

    See SUSE Security Summary Report.

______________________________________________________________________________

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 <name-of-the-file.rpm>
       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 <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>.
@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 shows 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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Marcus Meissner

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