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UNIRAS Brief - 450/05 - SUSE - Security Summary Report SUSE-SR:2005:015



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 450/05 dated 13.06.05  Time: 16:00  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
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SUSE - Security Summary Report SUSE-SR:2005:015

Detail
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______________________________________________________________________________

                        SUSE Security Summary Report

        Announcement ID:        SUSE-SR:2005:015
        Date:                   Tue, 07 Jun 2005 12:00:00 +0000
        Cross-References:       CAN-2005-1260
                                CAN-2005-1391
                                CAN-2005-1261

    Content of this advisory:
        1) Solved Security Vulnerabilities:
            - bzip2 decompression bomb
            - pound crash by overflow
            - gaim buffer overflow

        2) Pending Vulnerabilities, Solutions, and Work-Arounds:

            - postgresql
            - perl-Net-Server

        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.

   - bzip2 decompression bomb

     bzip2 could crash or run into an endless loop when decompressing
     certain specially crafted archives. This problem has been fixed.

     This issue is tracked by the Mitre CVE ID CAN-2005-1260 and affects
     all SUSE Linux based distributions.


   - pound

     A security problem in pound, a reverse proxying server, was fixed
     where clients with too long host names could trigger crashes by
     overflowing a buffer.

     This is tracked by the Mitre CVE ID CAN-2005-1391.

     This affects SUSE Linux 9.2 and 9.3.


   - gaim

     A buffer overflow in the URL handling code of gaim has been fixed.
     Remote attackers could exploit this bug to execute arbitrary code
     under the privileges of the user running gaim. 

     The Mitre CVE ID CAN-2005-1261 has been assigned to this issue.

     This affects all SUSE Linux Box products, SUSE Linux Desktop 1 and
     Novell Linux Desktop 9.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

   - postgresql

     Two security errors in PostgreSQL may allow an unprivileged database
     user to crash the backend process or allow an unprivileged user to
     gain the privileges of a database superuser.
          
     To fix those problems please carefully read the instructions on
     http://www.postgresql.org/about/news.315
          
     This is tracked by the Mitre CVE IDs CAN-2005-1409 and CAN-2005-1410
          
     All SUSE LINUX based products except for SLES8 are affected.

   - perl-Net-Server
     We earlier reported a format string problem in the perl-Net-Server
     perl modules. Against earlier suspicions this cannot be used to execute
     code, but just to crash (denial of service) the respective service.
     
     This is tracked by the Mitre CVE ID CAN-2005-1127.
______________________________________________________________________________

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@xxxxxxx>"

    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
    file name of the RPM package downloaded. The package is unmodified if it
    contains a valid signature from build@xxxxxxx 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@xxxxxxxx
        -   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@xxxxxxxx>.

    suse-security-announce@xxxxxxxx
        -   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@xxxxxxxx>.

    For general information or the frequently asked questions (FAQ) 
    send mail to <suse-security-info@xxxxxxxx> or 
    <suse-security-faq@xxxxxxxx>.

    =====================================================================
    SUSE's security contact is <security@xxxxxxxx> or <security@xxxxxxx>.
    The <security@xxxxxxx> 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@xxxxxxx>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@xxxxxxx>

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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
EMail to: uniras@xxxxxxxxxxxx

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 870 487 0748 Ext 4511
Fax: +44 (0) 870 487 0749

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of SUSE for the information 
contained in this Briefing. 
- ----------------------------------------------------------------------------------
This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
- ----------------------------------------------------------------------------------
<End of UNIRAS Briefing>

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