SUSE Security Announcement: opera remote script insertion (SUSE-SA:2005:057)

26 Sep 2005

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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                opera
        Announcement ID:        SUSE-SA:2005:057
        Date:                   Mon, 26 Sep 2005 15:00:00 +0000
        Affected Products:      SUSE LINUX 10.0
                                SUSE LINUX OSS 10.0
                                SUSE LINUX 9.3
                                SUSE LINUX 9.2
                                SUSE LINUX 9.1
                                SuSE Linux 9.0
        Vulnerability Type:     remote code execution
        Severity (1-10):        6
        SUSE Default Package:   yes
        Cross-References:       CAN-2005-3006
                                CAN-2005-3007

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             opera script insertion problems
           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

   This update upgrades the Opera web browser to the 8.50 release.

   Besides the changes in 8.50 that are listed in
            http://www.opera.com/docs/changelogs/linux/850/
   following security problems were fixed:

   1. Attached files are opened without any warnings directly from the 
      user's cache directory. This can be exploited to execute arbitrary 
      Javascript in context of "file://". 

   2. Normally, filename extensions are determined by the "Content-Type"  
      in Opera Mail. However, by appending an additional '.' to the end of 
      a filename, an HTML file could be spoofed to be e.g. "image.jpg.".

   These two vulnerabilities combined may be exploited to conduct script
   insertion attacks if the user chooses to view an attachment named
   e.g. "image.jpg." e.g. resulting in disclosure of local files.

2) Solution or Work-Around

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

3) Special Instructions and Notes

   Please restart running instances of Opera 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 <file.rpm>

   to apply the update, replacing <file.rpm> with the filename of the
   downloaded RPM package.

   x86 Platform:

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/opera-8.50-2.1.i586.rpm
          14d5e5fa885cdcbfe295bf14e78cc597

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/opera-8.50-2.1.i586.rpm
          d49cde72a2ca0a577b1f46d642177a2c

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/opera-8.50-1.1.i586.rpm
          37d049f6e1c74d93d53c8369e3c7d38a
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/opera-8.50-1.1.nosrc.rpm
          d186e1294cee84c3472df1ac84a3d6a2

   SuSE Linux 9.0:
   ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/opera-8.50-3.i586.rpm
          c9e8a2b20726590afafed2acf33878e5
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/opera-8.50-3.nosrc.rpm
          ba618d920bd3c67198a6cfe81417f505

   SUSE LINUX OSS 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/opera-8.50-2.1.i586.rpm
          f6fd16f597c24c44ff22d3079d67bf04
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/opera-8.50-2.1.nosrc.rpm
          f4d1a6f0d53de4d0a3c66342b39a1090

   x86-64 Platform:

   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/opera-8.50-2.1.x86_64.rpm
          5e7cc77dffeeb6f7f49040fe57a24436
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/opera-8.50-2.1.nosrc.rpm
          51bdcf29e4838f37c513db2fda7ce4cb

   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/opera-8.50-2.1.x86_64.rpm
          92ae1f3adca409fc7504f75eb9a048cd
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/opera-8.50-2.1.nosrc.rpm
          0068542ea265d222909b1a7afb2efd5d

   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/opera-8.50-1.1.x86_64.rpm
          26e585d3cd1b813a5fc5905d00ea8c41
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/opera-8.50-1.1.nosrc.rpm
          e1d6ab204a6b53257f883e0319001862

   SuSE Linux 9.0:
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/opera-8.50-3.x86_64.rpm
          eb553979fd5085a91fa2d31faff03f8f
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/opera-8.50-3.nosrc.rpm
          6495e097ae44fb75e9db8407bc2ce793

   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/opera-8.50-2.1.x86_64.rpm
          150053c82d63a0e33472eaa656417b32
   source rpm(s):
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/opera-8.50-2.1.nosrc.rpm
          db1da6ab611d0c70f46602585d0868d4

______________________________________________________________________________

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 <file>

    replacing <file> with the name of the file where you saved the
    announcement. The output for a valid signature looks like:

      gpg: Signature made <DATE> using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team <security@suse.de>"

    where <DATE> 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 <file.rpm>

       to verify the signature of the package, replacing <file.rpm> 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 <filename.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
       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-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 e-mail 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>.

    =====================================================================
    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, 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 <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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