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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                   ESB-2002.206 -- SGI Security Advisory
                   pmcd Denial of Service vulnerability
                                1 May 2002

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                pmcd
Vendor:                 SGI
Operating System:       IRIX 6.5.10 and prior
Impact:                 Denial of Service
Access Required:        Existing Account

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_____________________________________________________________________________

                          SGI Security Advisory

        Title:      pmcd Denial of Service vulnerability
        Number:     20020407-01-I
        Date:       April 30, 2002
        Reference:  CAN-2000-1193

______________________________________________________________________________

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

It's been reported that it is possible to feed certain parameters to the
/usr/etc/pmcd daemon that will make it grow in size to the point where a
Denial of Service attack can be created.

SGI has investigated the issue and recommends the following steps for
neutralizing the exposure.  It is HIGHLY RECOMMENDED that these measures be
implemented on ALL vulnerable SGI systems.

These issues have been corrected in IRIX 6.5.11 and later versions.


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

The pmcd daemon is part of SGI's Performance Co-Pilot suite of performance
monitoring tools.  This is an optional product and is not installed by
default, but is supplied with the base OS.

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

% versions pcp_eoe
I = Installed, R = Removed

   Name                 Date        Description

   I  pcp_eoe              01/22/2002  Performance Co-Pilot Execution Only
                                       Environment, 6.5.15f
   I  pcp_eoe.man          01/22/2002  PCP EOE Documentation, 6.5.15f
   I  pcp_eoe.man.relnotes 01/22/2002  PCP EOE Release Notes, 6.5.15f
   I  pcp_eoe.sw           01/22/2002  PCP EOE Software, 6.5.15f
   I  pcp_eoe.sw.eoe       01/22/2002  PCP EOE, 6.5.15f

If the output looks similar to the above, then Performance Co-Pilot is
installed, and you are vulnerable if the version shown is earlier than
6.5.11.

This vulnerability may be exploited by a remote user, no local account
is required.

This vulnerability has been fixed in IRIX 6.5.11 and later versions.

This vulnerability was assigned the following CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2000-1193
http://www.iss.net/security_center/static/4284.php


- - ----------------------------
- - --- Temporary Workaround ---
- - ----------------------------

If you don't use the Performance Co-Pilot software, it can be uninstalled
using the command:

  # versions remove pcp_eoe

If you use the software, then SGI recommends upgrading to IRIX 6.5.11 or a
later version.


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

SGI has not provided patches for this vulnerability. Our recommendation is
to upgrade to IRIX 6.5.11 or a later version.


   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       no
   IRIX 6.5.12       no
   IRIX 6.5.13       no
   IRIX 6.5.14       no
   IRIX 6.5.15       no
   IRIX 6.5.16       no


   NOTES

     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
        information.

     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 6.5.11 or a later version of IRIX.


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

SGI wishes to thank Marcelo Magnasco, ISS, FIRST and the users of the
Internet Community at large for their assistance in this matter.


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

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

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

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:
http://freeware.sgi.com/

SGI fixes for SGI open sourced code can be found on:
http://oss.sgi.com/projects/

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/linux/ or
http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/

SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/nt/

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:
http://support.sgi.com/colls/patches/tools/relstream/index.html

IRIX 6.5 Software Update CDs can be obtained from:
http://support.sgi.com/irix/swupdates/

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com (216.32.174.211).  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
security-info@sgi.com.

                      ------oOo------

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 (216.32.174.211).  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:
http://www.sgi.com/support/security/

For issues with the patches on the FTP sites, email can be sent to
security-info@sgi.com.

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

                      ------oOo------

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>
end
^d

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.


                      ------oOo------

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

                      ------oOo------

If there are general security questions on SGI systems, email can be sent to
security-info@sgi.com.

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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