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TUCoPS :: Linux :: SUSE :: hack0783.htm

subversion (SuSE-SA:2004:018)



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


-----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-0.2 7.0-209.i586.rpm
      deeeef548aa11dfe1b176bf5a5af9d75
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/subversion-0.2 7.0-209.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-0.1 7.1-98.i586.rpm
      1fbd241f1dfb9a95f4eb6fe224eb40bb
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/subversion-0.1 7.1-98.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-0.2 3.0-60.i586.rpm
      3e1d7172bc213bcdb7edc88b7653ab1b
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/subversion-0.2 3.0-60.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/subversio n-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/subversio n-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/subversio n-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/subversio n-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 
       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 
       to verify the signature of the package, where  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-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
                . 

    For general information or the frequently asked questions (faq) 
    send mail to:
         or 
         respectively. 

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

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