SUSE Security Announcement: subversion (SuSE-SA:2004:018)

security_at_suse.de
Date: 06/17/04

  • Next message: Greg Obremski: "time"
    Date: Thu, 17 Jun 2004 11:42:59 +0200
    To: bugtraq@securityfocus.com
    
    

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

    ______________________________________________________________________________

                            SUSE Security Announcement

            Package: subversion
            Announcement-ID: SuSE-SA:2004:018
            Date: Thursday, Jun 17th 2004 09:30 MEST
            Affected products: 8.1, 8.2, 9.0, 9.1
            Vulnerability Type: remote system compromise
            Severity (1-10): 5
            SUSE default package: no
            Cross References: CAN-2004-0413

        Content of this advisory:
            1) security vulnerability resolved: heap overflow
               problem description, discussion, solution and upgrade information
            2) pending vulnerabilities, solutions, workarounds:
                 - icecast
                 - sitecopy
                 - cadaver
                 - OpenOffice_org
                 - tripwire
                 - postgresql
                 - lha
                 - XDM
                 - mod_proxy
            3) standard appendix (further information)

    ______________________________________________________________________________

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

        Subversion is a version control system like the well known CVS.
        The subversion code is vulnerable to a remotely exploitable buffer
        overflow on the heap. The bug appears before any authentication took
        place. An attacker is able to execute arbitray code by abusing this
        vulnerability.

        There is no temporary workaround 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.

        x86 Platform:

        SUSE Linux 9.1:
        ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/subversion-1.0.0-73.7.i586.rpm
          775edc02ae610d8062e808d37540c0ea
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/subversion-1.0.0-73.7.i586.patch.rpm
          93d2ddd82390857d7c2ed5793d2312eb
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/subversion-1.0.0-73.7.src.rpm
          8498e3e8911260f8f06c285946f12437

        SUSE Linux 9.0:
        ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/subversion-0.27.0-209.i586.rpm
          deeeef548aa11dfe1b176bf5a5af9d75
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/subversion-0.27.0-209.i586.patch.rpm
          38a6d786f0f0b42e68117a277b4db309
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/subversion-0.27.0-209.src.rpm
          0c69c5a9665e75504d2c4bf8c51807a6

        SUSE Linux 8.2:
        ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/subversion-0.17.1-98.i586.rpm
          1fbd241f1dfb9a95f4eb6fe224eb40bb
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/subversion-0.17.1-98.i586.patch.rpm
          b553edab8ea07dac53ad26d147dd029d
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/subversion-0.17.1-98.src.rpm
          89d2b6eedbb67d8e3be5e1c7c334792f

        SUSE Linux 8.1:
        ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/subversion-0.23.0-60.i586.rpm
          3e1d7172bc213bcdb7edc88b7653ab1b
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/subversion-0.23.0-60.i586.patch.rpm
          d4897a9197e3c8518a132a0d64cc41e5
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/subversion-0.23.0-60.src.rpm
          3ebbd71afb51b6becb15f12e813d705a

        x86-64 Platform:

        SUSE Linux 9.1:
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/subversion-1.0.0-73.7.x86_64.rpm
          da1b75e7cf629b65f20b75295df216d8
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/subversion-1.0.0-73.7.x86_64.patch.rpm
          15ec6b033bc85e22b78b1638f13ffc9b
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/subversion-1.0.0-73.7.src.rpm
          2b738a9a5e0aabcdee60d19b74371580

        SUSE Linux 9.0:
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/subversion-0.27.0-209.x86_64.rpm
          af042607c6ad7e55c248f47177e8c166
        patch rpm(s):
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/subversion-0.27.0-209.x86_64.patch.rpm
          cbffe53ef02a36d63b71d2f86c17d861
        source rpm(s):
        ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/subversion-0.27.0-209.src.rpm
          d16a485c5d3983b2b4322405abe3c01a

    ______________________________________________________________________________

    2) Pending vulnerabilities in SUSE Distributions and Workarounds:

        - icecast
        The icecast service is vulnerable to a remote denial-of-service
        attack. Update packages will be available soon.

        - sitecopy
        The sitecopy package includes a vulnerable version of the
        neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
        available soon.

        - cadaver
        The cadaver package includes a vulnerable version of the
        neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
        available soon.

        - OpenOffice_org
        The OpenOffice_org package includes a vulnerable version
        of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages
        will be available soon.

        - tripwire
        A format string bug in tripwire can be exploited locally
        to gain root permissions. Update packages will be available soon.

        - postgresql
        A buffer overflow in psqlODBC could be exploited to crash the
        application using it. E.g. a PHP script that uses ODBC to access a
        PostgreSQL database can be utilized to crash the surrounding Apache
        web-server. Other parts of PostgreSQL are not affected.
        Update packages will be available soon.

        - lha
        Minor security fix for a buffer overflow while handling command
        line options. This buffer overflow could be exploited in conjunction
        with other mechanisms to gain higher privileges or access the system
        remotely.

        - XDM/XFree86
        This update resolves random listening to ports by XDM
        that allows to connect via the XDMCP. SUSE LINUX 9.1
        is affected only.
        New packages are currently being tested and will be
        available soon.

        - mod_proxy
        A buffer overflow can be triggered by malicious remote
        servers that return a negative Content-Length value.
        This vulnerability can be used to execute commands remotely
        New packages are currently being tested and will be
        available soon.

    ______________________________________________________________________________

    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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