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SuSE alert: postgresql

Posted by dave on Oct 21, 2002 7:52 AM EDT
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The PostgreSQL Object-Relational DBMS was found vulnerable to several security related buffer overflow problems. The buffer overflows are located in: * handling long datetime input * lpad() and rpad() function with multibyte * repeat() function * TZ and SET TIME ZONE environment variables These bugs could just be exploited by attackers who have access to the postgresql server to gain the privileges postgres user ID .

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

______________________________________________________________________________

SuSE Security Announcement

        Package: postgresql
        Announcement-ID: SuSE-SA:2002:038
        Date: Monday, Oct 21th 2002 17:30 MEST
        Affected products: 7.0, 7.1, 7.2, 7.3, 8.0
                                SuSE eMail Server 3.1
                                SuSE eMail Server III
        Vulnerability Type: remote privilege escalation
        Severity (1-10): 3
        SuSE default package: no
        Cross References: CAN-2002-0972

    Content of this advisory:
        1) security vulnerability resolved: several buffer overflows
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
            - mod_php4
            - kon2
        3) standard appendix (further information)

______________________________________________________________________________

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

    The PostgreSQL Object-Relational DBMS was found vulnerable to several
    security related buffer overflow problems.
    The buffer overflows are located in:
      * handling long datetime input
      * lpad() and rpad() function with multibyte
      * repeat() function
      * TZ and SET TIME ZONE environment variables
    These bugs could just be exploited by attackers who have access to the
    postgresql server to gain the privileges postgres user ID .

The PostgreSQL package is not installed by default.
A temporary fix is not 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.

i386 Intel Platform:

Sparc Platform:

Due to lack of resources new packages will be made available later without
any further notice.

AXP Alpha Platform:

Due to lack of resources new packages will be made available later without
any further notice.

PPC Power PC Platform:

______________________________________________________________________________

2) Pending vulnerabilities in SuSE Distributions and Workarounds:

    - mod_php4
      There was a mistake in Advisory SuSE-SA:2002:036 in section
      "Affected products". SuSE 7.0 and 7.1 are _not_ vulnerable.

    - kon2
      There is a vulnerability in kon2, a Japanese input manager for the
      VGA console, that can be exploited by local users to obtain root
      privilege. We recommend to un-install kon2.

__________________________________________________________________________

3) 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>.
    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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Bye,
Thomas

-- Thomas Biege <thomas@suse.de> SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg Function: Security Support & Auditing "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | pgp -fka" Key fingerprint = 51 AD B9 C7 34 FC F2 54 01 4A 1C D4 66 64 09 83 --

Cold silence has a tendency to atrophy any sense of compassion - Maynard James Keenan

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SuSE alert: postgresql

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