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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                samba
        Announcement-ID:        SUSE-SA:2004:022
        Date:                   Friday, Jul 23th 2004 12:30 MEST
        Affected products:      8.1, 8.2, 9.0, 9.1
                                SUSE Linux Database Server,
                                SUSE eMail Server III, 3.1
                                SUSE Linux Enterprise Server 7, 8
                                SUSE Linux Firewall on CD/Admin host
                                SUSE Linux Connectivity Server
                                SUSE Linux Office Server
        Vulnerability Type:     remote root compromise
        Severity (1-10):        7
        SUSE default package:   no
        Cross References:       CAN-2004-0600
                                CAN-2004-0686

    Content of this advisory:
        1) security vulnerability resolved:
            - buffer overflow in base64 code
            - buffer overflow in "mangling method hash" code
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
            - cadaver
            - kopete
            - wv
            - gnats
            - OpenOffice_org
            - mod_ssl
            - lha
        3) standard appendix (further information)

______________________________________________________________________________

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

    The Samba Web Administration Tool (SWAT) was found vulnerable to
    a buffer overflow in its base64 code. This buffer overflow can possibly
    be exploited remotely before any authentication took place to execute
    arbitrary code.
    The same piece of vulnerable code was also used in ldapsam passdb and
    in the ntlm_auth tool.
    This vulnerability only exists on Samba 3.0.2 to 3.0.4.

    Another buffer overflow was found in Samba 3.0.0 and later, as well as
    in Samba 2.2.x. This overflow exists in the hash code of the mangling
    method (smb.conf: mangling method = hash), the default uses hash2 which
    is not vulnerable.

    There is no temporary workaround known. The first proof-of-concept
    exploits were seen on public mailing lists.

    After the installation was successfully completed please restart the
    samba daemon.
                        /usr/sbin/rcsmb restart

    SWAT is called by inetd/xinetd. Therefore it is sufficient to kill all
    running instances of SWAT only.

    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.

    Note that SLES8 packages will be delivered with a short delay.
    

    x86 Platform:

    SUSE Linux 9.1:
          eb8a66582bfa5749457ac18d518321ef
          d38d71df7e69ede72ae70f1e763ee688
          9d95db6023323752e1705147c3a0609a
          dfd2c9883cfdbefc27d8a6d555d483df
          117af75e8fb9d8a941a88680f813f7ba
          a589036769807de0fc0aa5bab67010f4
          c5ef1760451cc548082ad6dad990e971
          2ea69766d732ca3393a3a49256550315
          6c03f36007f9172ec2c51b18796b7fed
    patch rpm(s):
          1d4b5402e5c4d86c6da563176e4c08fb
          71a324e5651388fc8386abd3ac7390e8
          37bb872de17d6553cd4b3953339fff57
          7e3f654697615788d6ec4a8b7befb409
          4fe8afef0d7a6423e9d75059f5c3a39c
          5fdd07f3ed51f1445ae9627d27288ad5
          a68c8621757af909d2b94e850be7de91
          3ccb1c15d3a92e3addce0006fc5f36aa
          f5611c3f3205bb71bb18c7aa9d89e147
    source rpm(s):
          28ddb7350c6d00554cbbfee069508bfa
          28ddb7350c6d00554cbbfee069508bfa

    SUSE Linux 9.0:
          9ac0a1d443e21b690fa44efdf4fbfe26
          d06b6b598b068b32c5b8e53deba35781
          ee96bf9888505c733c2125d0c82bc6ab
          d058f19c7d39a7cbad2a9e7802e18321
    patch rpm(s):
          aec244915e9904e7ab768fc2a7f42678
          975a1aa4730932384d1f714de1d97f0d
          83372f5221e4d87b442896d18cb13cfb
          01173f42d4c553060a3bd34e868b6036
    source rpm(s):
          1c593a5d8773adaf5bced92c448b1d28

    SUSE Linux 8.2:
          be58f82e80dadb267c2a4825f4595f78
          e8b0f39bc5399c47604e85fe4c5afaa8
          6bceb4400311c62ba0ee3c67c307c995
          75f7435be45346ec464ac601928ef5ec
          25e6c997abb4d1f553d65f28c755bdd6
          51db02193556b2e0f656ae3eab6e6d2c
    patch rpm(s):
          36c9f4bf87e8c24f383243b6afa60a78
          dae51ec83ebb8c4561f093275693cddd
          65e4ec644fcaa6dae0e0a6eb45bd3b32
          b7afa9c1ce7c738e5713ecb099997c60
          9012184f0134752e93304f446f66b58b
          b3c54af825c8493477228a148e980fbb
    source rpm(s):
          d4191930b031916da317826c97ed2d1f

    SUSE Linux 8.1:
          bd05222b4bfb4e5f9b74d698193308b4
          995a14fc6c056b6fd0f058e2998e3662
          06f2b11f510feabd03a5f12011123434
    patch rpm(s):
          440f99b6f31364338f193f19d9ffa11c
          e7f3e019310b89e9d886566eb1883015
          9bdff15af5aa1bcbd8b3f3f7bc0ca3da
    source rpm(s):
          220a7c6d6321e3084a2aff660b6d0676


    x86-64 Platform:

    SUSE Linux 9.1:
          1213320f05fe517f6ba04bc42d50709f
          5a82823e6084bb0a34f49ffb65a42cd0
          ab4eff578e923f7669117906e8b9746b
          5bbc5dadc8fe63fd6425eff47f8106ef
          48430a71429570acc9b548aecd934231
          6f392d6e316270195f378e6e2c9d985a
          1c1fd503a6647971062242e5331b3a40
          3ea19bb5407aad016a81a1c58959a3f5
          f29abe0a058b7ac5bf279c58da1786e9
    patch rpm(s):
          b2411efa394e95aaf7f99f24bfa49df4
          d0f46d9895ed6e832eb084e27861e46b
          772f3ee4c84c1f3a56ec8de8d84f0f9b
          24cf637c5d4e457ccf9e9f0c7310aaa2
          3fc53fd5832e1dcc27cd94ac71f3326a
          90d8eabb5627bf35926c14efbe38715c
          604605a86c494ad75e36d726f5338e92
          a9fc6862320d1a5779bfdb579940aecc
          e26969f5d5825783b9f3772c57130658
    source rpm(s):
          ae515af0053f16915ec17a7603f8ea4f
          ae515af0053f16915ec17a7603f8ea4f

    SUSE Linux 9.0:
          45d16bdb83a27119aa9214c47436c363
          488e2f2062d0a26188af0d4344090ce5
          b71dd13a2eaa7e2e739051c1b3d46660
          2c2d87093a5133ba06a16b951d7cdbee
    patch rpm(s):
          b97f915e2e5d0a36ee158ea904a9afb2
          2c991a6b08e0d4a3e7a08df2674b6bdf
          652aacdf4f9924fa116ecd6ba0be82b4
          0187cf267440e0ae59cf6470506b8aff
    source rpm(s):
          3e8959024074f53e6af4f2d5db5799c4



______________________________________________________________________________

2)  Pending vulnerabilities in SUSE Distributions and Workarounds:

    - cadaver
    The cadaver package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398).
    New packages are available on our FTP servers.

    - kopete
    This update fix' a security issue in the winpopup protocol.
    It was possible to overwrite files via a symlink attack.
    New packages are available on our FTP servers.

    - wv
    This update resolves the insecure handling of temporary files.
    New packages are available on our FTP servers.

    - gnats
    A format string bug in gnats has been fixed that possibly allows
    remote command execution.
    New packages are available on our FTP servers.

    - OpenOffice_org
    OpenOffice_org uses a vulnerable version of libneon (CAN-2004-0179,
    CAN-2004-0398, missing filtering of control chars). Note that this
    update is marked "optional" and not "security" because of the size
    of the package.
    New packages are available on our FTP servers.

    - mod_ssl
    A remotely exploitable format string bug has been found in the
    logging function of mod_ssl.
    New packages will be available soon.

    - lha
    A source code review of lha was conducted by the SuSE Security-Team
    to fix all possible buffer overflows.
    New packages 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.
    ====================================================================