AUSCERT External Security Bulletin Redistribution

                   ESB-2002.408 -- SGI Security Advisory
                           BIND vulnerabilities
                               9 August 2002


        AusCERT Security Bulletin Summary

Product:                BIND
Vendor:                 SGI
Operating System:       IRIX 6.5
Impact:                 Denial of Service
                        Root Compromise
Access Required:        Remote

- --------------------------BEGIN INCLUDED TEXT--------------------



                          SGI Security Advisory

        Title:      BIND vulnerabilities
        Number:     19991101-02-I
        Date:       August 7, 2002
        Reference:  SGI Security Advisory 19991101-01-I
        Reference:  CERT® Advisory CA-1999-14
        Reference:  CVE-1999-0849
        Reference:  CVE-1999-0851

- - -----------------------
- - --- Issue Specifics ---
- - -----------------------

As part of on going security efforts, this is a followup to SGI
Security Advisory 19991101-01-I.

The BIND distribution provides Internet domain name service known as DNS
thru a daemon called named.

ISC and CERT have reported several vulnerabilities discovered in
certain versions of BIND distributions.  These vulnerabilities can be
used to perform denial of service attacks and/or to obtain privileged
access remotely.

SGI has investigated the issue and provides the following information for
customer interpretation and possible action.

- - --------------
- - --- Impact ---
- - --------------

SGI distributes BIND based on version 4.9.4 patchlevel 1 with IRIX 6.5,
but it is not installed by default.  It is part of the package eoe.sw.named.

To determine the version of IRIX you are running, execute the following

  # uname -R

That will return a result similar to the following:

  # 6.5 6.5.16f

The first number ("6.5") is the release name, the second ("6.5.16f" in this
case) is the extended release name.  The extended release name is the
"version" we refer to throughout this document.

To see if BIND is installed, execute the following command:

% versions eoe.sw.named
I = Installed, R = Removed

   Name                 Date        Description

   I  eoe                  12/12/2001  IRIX Execution Environment, 6.5.14f
   I  eoe.sw               12/12/2001  IRIX Execution Environment Software
   I  eoe.sw.named         12/12/2001  Berkeley Internet Name Domain Server

These vulnerabilities were reported by Internet Software Consortium (ISC):

These vulnerabilities were also reported by CERT(sm) in Advisory CA-1999-14:

The denial of service in BIND named via maxdname was assigned CVE:

The denial of service in BIND named via naptr was assigned CVE:

These vulnerabilities have been publicly discussed in public Usenet
newsgroups and Internet mailing lists.

- - --------------------------
- - --- Temporary Solution ---
- - --------------------------

Unfortunately, there are no immediate or temporary workarounds for
this issue if you need to run a local nameserver.  SGI recommends either
installing the appropriate patch from the list below or upgrading to IRIX
6.5.18 when it is released.

- - ----------------
- - --- Solution ---
- - ----------------

SGI has provided a patch for these vulnerabilities. Our recommendation is to
upgrade to IRIX 6.5.18 when available, or install the appropriate patch.

This patch updates BIND to version 4.9.8 patchlevel 1 and provides
a chroot jail option for named.

   OS Version     Vulnerable?     Patch #      Other Actions
   ----------     -----------     -------      -------------
   IRIX 3.x        unknown                     Note 1
   IRIX 4.x        unknown                     Note 1
   IRIX 5.x        unknown                     Note 1
   IRIX 6.0.x      unknown                     Note 1
   IRIX 6.1        unknown                     Note 1
   IRIX 6.2        unknown                     Note 1
   IRIX 6.3        unknown                     Note 1
   IRIX 6.4        unknown                     Note 1
   IRIX 6.5          yes                       Notes 2 & 3
   IRIX 6.5.1        yes                       Notes 2 & 3
   IRIX 6.5.2        yes                       Notes 2 & 3
   IRIX 6.5.3        yes                       Notes 2 & 3
   IRIX 6.5.4        yes                       Notes 2 & 3
   IRIX 6.5.5        yes                       Notes 2 & 3
   IRIX 6.5.6        yes                       Notes 2 & 3
   IRIX 6.5.7        yes                       Notes 2 & 3
   IRIX 6.5.8        yes                       Notes 2 & 3
   IRIX 6.5.9        yes                       Notes 2 & 3
   IRIX 6.5.10       yes                       Notes 2 & 3
   IRIX 6.5.11       yes                       Notes 2 & 3
   IRIX 6.5.12       yes                       Notes 2 & 3
   IRIX 6.5.13       yes           4725        Note 4
   IRIX 6.5.14       yes           4725        Note 4
   IRIX 6.5.15       yes           4725        Note 4
   IRIX 6.5.16       yes           4725        Note 4
   IRIX 6.5.17       yes           4725        Note 4
   IRIX 6.5.18       no


     1) This version of the IRIX operating has been retired. Upgrade to an
        actively supported IRIX operating system.  See
        http://support.sgi.com/irix/news/index.html#policy for more

     2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your
        SGI Support Provider or URL: http://support.sgi.com/irix/swupdates/

     3) Upgrade to IRIX 6.5.18.

     4) For best security, configure named to run in a chroot jail, per the
        instructions in the named man page and the release notes supplied
        with patch 4275.

                ##### Patch File Checksums ####

The actual patch will be a tar file containing the following files:

Filename:                 README.patch.4725
Algorithm #1 (sum -r):    47466 9 README.patch.4725
Algorithm #2 (sum):       18164 9 README.patch.4725
MD5 checksum:             11CB51FFF166126F98472088CB96A22B

Filename:                 patchSG0004725
Algorithm #1 (sum -r):    58773 5 patchSG0004725
Algorithm #2 (sum):       56317 5 patchSG0004725
MD5 checksum:             5A61B164228B241DC34DADE95337807A

Filename:                 patchSG0004725.eoe_man
Algorithm #1 (sum -r):    43866 39 patchSG0004725.eoe_man
Algorithm #2 (sum):       43362 39 patchSG0004725.eoe_man
MD5 checksum:             6C004F572C6A57973B23F6B940E02FC7

Filename:                 patchSG0004725.eoe_sw
Algorithm #1 (sum -r):    31793 411 patchSG0004725.eoe_sw
Algorithm #2 (sum):       52735 411 patchSG0004725.eoe_sw
MD5 checksum:             34D2F1E205181CBF855D882855CDCC76

Filename:                 patchSG0004725.idb
Algorithm #1 (sum -r):    26064 2 patchSG0004725.idb
Algorithm #2 (sum):       6527 2 patchSG0004725.idb
MD5 checksum:             FFDD998D739E5646A4F010D299F69464

- - ------------------------
- - --- Acknowledgments ----
- - ------------------------

SGI wishes to thank ISC, CERT, Solar Designer, The Openwall Project, and the
users of the Internet Community at large for their assistance in this

- - -------------
- - --- Links ---
- - -------------

SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and

SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and

SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:

SGI fixes for SGI open sourced code can be found on:

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/linux/ or

SGI patches for Windows NT or 2000 can be found at:

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:

IRIX 6.5 Software Update CDs can be obtained from:

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com (  Security advisories and patches are
located under the URL ftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com security FTP repository) lags behind and does not do a
real-time update.

- - -----------------------------------------
- - --- SGI Security Information/Contacts ---
- - -----------------------------------------

If there are questions about this document, email can be sent to


SGI provides security information and patches for use by the entire SGI
community.  This information is freely available to any person needing the
information and is available via anonymous FTP and the Web.

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com (  Security advisories and patches are
located under the URL ftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:

For issues with the patches on the FTP sites, email can be sent to

For assistance obtaining or working with security patches, please
contact your SGI support provider.


SGI provides a free security mailing list service called wiretap and
encourages interested parties to self-subscribe to receive (via email) all
SGI Security Advisories when they are released. Subscribing to the mailing
list can be done via the Web
(http://www.sgi.com/support/security/wiretap.html) or by sending email to
SGI as outlined below.

% mail wiretap-request@sgi.com
subscribe wiretap <YourEmailAddress>

In the example above, <YourEmailAddress> is the email address that you wish
the mailing list information sent to.  The word end must be on a separate
line to indicate the end of the body of the message. The control-d (^d) is
used to indicate to the mail program that you are finished composing the
mail message.


SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .


If there are general security questions on SGI systems, email can be sent to

For reporting *NEW* SGI security issues, email can be sent to
security-alert@sgi.com or contact your SGI support provider.  A support
contract is not required for submitting a security report.

      This information is provided freely to all interested parties
      and may be redistributed provided that it is not altered in any
      way, SGI is appropriately credited and the document retains and
      includes its valid PGP signature.

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