Date: Fri, 20 Jan 2006 16:08:01 +0100
From: Marcus Meissner <meissner@suse.de>
To: suse-security-announce@suse.com
Subject: SUSE Security Summary Report SUSE-SR:2006:002


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______________________________________________________________________________

                        SUSE Security Summary Report

        Announcement ID:        SUSE-SR:2006:002
        Date:                   Fri, 20 Jan 2006 15:00:00 +0000
        Cross-References:       CVE-2006-0106, CVE-2005-3191, CVE-2005-3192
                                CVE-2005-2959, CVE-2006-0151, CVE-2005-4158

    Content of this advisory:
        1) Solved Security Vulnerabilities:
            - wine WMF SETABORTPROC problem
            - cups pdftops various xpdf problems
            - sudo environment variable problems
        2) Pending Vulnerabilities, Solutions, and Work-Arounds:
            - various kernel security issues
        3) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Solved Security Vulnerabilities

   To avoid flooding mailing lists with SUSE Security Announcements for minor
   issues, SUSE Security releases weekly summary reports for the low profile
   vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums
   or download URLs like the SUSE Security Announcements that are released for
   more severe vulnerabilities.

   Fixed packages for the following incidents are already available on our FTP
   server and via the YaST Online Update.

   - wine WMF SETABORTPROC problem

     The Windows Metafile format allowed execution code by including
     a Escape(SETABORTPROC) record. The free Windows Emulator WINE was
     also affected by this problem.  If an attacker could convince you
     to open/view a prepared metafile he would be able to execute code.

     This is tracked by the Mitre CVE ID CVE-2006-0106.

     SUSE Linux 9.1 up to 10.0 are affected by this problem.

   - cups pdftops various xpdf problems

     Integer overflows in the CUPS helper application pdftops (that
     contains xpdf code) potentially allowed to execute arbitrary code
     via specially crafted PDF files

     The PDF issues are tracked by CVE-2005-3191, CVE-2005-3192, all
     SUSE Linux based products were affected.

   - sudo environment variable problems

     The fixes for CVE-2005-2959, CVE-2006-0151, and CVE-2005-4158
     extend the sudo internal environment variable blacklist to prevent
     interpretation of those variables by the bash shell.

     In our opinion a blacklist based approach to improve security is
     doomed to fail. If you use sudo to grant limited super user access
     to regular users you should rather configure sudo to clean the entire
     environment by setting the options env_reset and always_set_home.
     We will therefore not release security updates for the sole purpose
     of extending the blacklist.

     Further products will use the env_reset and always_set_home options.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

   - Kernel security issues

     Various kernel security issues are known and we will start preparing
     updates soon.
     The next kernel update will probably be available mid of February.
______________________________________________________________________________

3) 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 containing 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 integrity of a
    package needs to be verified to ensure that it has not been tampered with.

    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 included at the end of this
    announcement.

  - 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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