______________________________________________________________________________

                        SuSE Security Announcement

        Package:                bind8
        Announcement-ID:        SuSE-SA:2001:03
        Date:                   Tuesday, January 30th, 2000 23:40 MEST
        Affected SuSE versions: 6.0, 6.1, 6.2, 6.3, 6.4, 7.0, 7.1
        Vulnerability Type:     remote root compromise
        Severity (1-10):        9
        SuSE default package:   no
        Other affected systems: all systems using bind, versions before
                                8.2.3-REL

    Content of this advisory:
        1) security vulnerability resolved: bind8
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds
        3) standard appendix (further information)

______________________________________________________________________________

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

    bind-8.x in all versions of the SuSE distributions contain a bug in the
    transaction signature handling code that can allow to remotely over-
    flow a buffer and thereby execute arbitrary code as the user running
    the nameserver (this is user named by default on SuSE systems).
    In addition to this bug, another problem allows for a remote attacker
    to collect information about the running bind process (this has been
    found by Claudio Musmarra <a9605121@unet.univie.ac.at>).
    For more information on these bugs, please visit the CERT webpage at
     2001 CERT Advisories and the bind bugs
    webpage at    .

    The problem is existent in the upcoming SuSE distribution 7.1 that
    will be available by February 10th in the CD/DVD version.

    There exists no reasonable method to circumvent the problems other than
    to update the package as described below.


    Please choose the update package for your distribution from the
    URLs listed below and download the necessary rpm files. Then,
    install the package using the command `rpm -Uhv file.rpm´. rpm
    packages have an internal md5 checksum that protects against file
    corruption. You can verify this checksum using the command
    (independently from the md5 signatures below)
        `rpm --checksig --nogpg file.rpm',
    The md5 sums under each package are to prove the package authenticity,
    independently from the md5 checksums in the rpm package format.

    SPECIAL INSTALL INSTRUCTIONS:
    =============================    If you run a bind8 nameserver on your system, please update the package
    immediately. In order for the updated package to become active, the
    nameserver process "named" needs to be restarted. Do this using the
    command
        `rcnamed restart´
    as root after performing the rpm command as shown above. Afterwards,
    check for the running daemon using the ps command as `ps aux´. The
    named process should show a new starting time. Repeat the
    `rcnamed restart´ command if the nameserver shut down too slowly to
    release the socket for the new server.


    i386 Intel Platform:
    SuSE-7.1
      
      e9b354dbd96f6216b9da01f2b3a0a166
    source rpm:
      
      f77200a6c476b58980f68b5db3fd7c4b

    SuSE-7.0
      
      4fdee7483fce85f2a31a1a53d2b01b76
    source rpm:
      
      e53896d1ddfb405774a492469621af02

    SuSE-6.4
      
      bb25cb6ba2e54bf929f61c14b3663b3e
    source rpm:
      
      1033f0df4b747f1d2758fdae69a5fa17

    SuSE-6.3
      
      73fe798d4afb87beecb2546ecf076f64
    source rpm:
      
      dfe4e452d8d0a0a8ff0994e514353b3f

    SuSE-6.2
      
      48b45d14724e852810de130864ab8281
    source rpm:
      
      22ca23ed06739effc887370bfef2d83e

    SuSE-6.1
      
      fc9cd0970c15246599f90ce1f5955f29
    source rpm:
      
      6cdf2e5c3a9a25ca98f8916de677cb70

    SuSE-6.0
    Please use the SuSE-6.1 packages for the SuSE-6.0 distribution on the
    i386 Intel Platform.



    AXP Alpha Platform:

    SuSE-7.0
      
      84014e0f19e52a09b90897e18d8eb774
    source rpm:
      
      99df556319e0c232d78cdb69d5d28ac0

    SuSE-6.4
      
      2e2a8f6c3c6838a7fd49bd7926fc3de3
    source rpm:
      
      9b0c2e8469f597f43010a125af8f54fe

    SuSE-6.3
      
      0194fc4461ef902c46b75f28fa8f2ef6
    source rpm:
      
      dffa2d911f6dae9092301bd8ad4f026f

    SuSE-6.1
      
      ebd233233829eef3d73db7d0a828c35a
    source rpm:
      
      582e7985719d3f7da86a77349aa1611d



    PPC Power PC Platform:

    SuSE-7.0
      
      b9354106b0b89edf8f1883b2ea50e656
    source rpm:
      
      534d84e900c6edf3fa8f2ef546d08c0a

    SuSE-6.4
      
      5c3a00ebd3ddb0388e460673bfec88d0
    source rpm:
      
      418ae09b44885199f4a4403748b6ab2b


    Sparc Platform:
    Due to build bottlenecks, the update package for the sparc platform
    (SuSE-7.0 distribution) is delayed.


______________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

    SuSE distributions contain the bind nameserver in Version 4 as well.
    bind-4.x in the currently used version has security-related bugs,
    some of which are similar to the ones in the 8.x versions. We will
    provide update packages as well as an announcement for the bind
    (not bind8) package shortly, along with an own announcement.
______________________________________________________________________________

3)  standard appendix:

    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 annoucements 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>.
    ==============================================
Regards,
Roman Drahtmüller.
- --
 -                                                                      -
| Roman Drahtmüller      <draht@suse.de> //          "Caution: Cape does |
  SuSE GmbH - Security           Phone: //       not enable user to fly."
| Nürnberg, Germany     +49-911-740530 // (Batman Costume warning label) |
 -                                                                      -
______________________________________________________________________________