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MediaMail vulnerability
From: SGI Security Coordinator <agent99 () sgi com>
Date: Thu, 6 Jun 2002 14:26:35 -0700 (PDT)

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_____________________________________________________________________________

                          SGI Security Advisory

        Title:      MediaMail vulnerability
        Number:     20020602-01-I
        Date:       June 6, 2002
        Reference:  CAN-2002-0358
_____________________________________________________________________________

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

It's been reported that the "MediaMail" and "MediaMail Pro" (the binary is
"/usr/binX11/MediaMail") mail applications can be caused to dump core when
passed certain user-supplied arguments. Since MediaMail and MediaMail Pro
are setgid to group "mail", they are considered to be privileged programs,
and this core dumping can be used in a variety of ways to exploit the
system.

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.


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

The MediaMail binary is installed by default on IRIX 6.2 and earlier systems
as part of eoe.sw.base.  MediaMail was not shipped starting with IRIX 6.5,
but "MediaMail Pro" was shipped with IRIX 6.5 on the Applications CD, and is
not installed by default.

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

  # uname -R

That will return a result similar to the following:

  # 6.5 6.5.15f

The first number ("6.5") is the release name, the second ("6.5.15f" in this
case) is the extended release name.  The extended release name is the
"version" we refer to throughout this document.

To see if MediaMail or MediaMail Pro is installed, execute the following
command:

  # versions -b | mmail

If lines similar to either of the following lines are returned, then it is
installed, and the system is vulnerable.

  I  mmail          10/14/2000    MediaMail
  I  mmail          10/14/2000    MediaMail Pro


This vulnerability was assigned the following CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0358


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

There is no effective workaround available for these problems.


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

MediaMail is an expired product, therefore SGI has not provided patches for
these vulnerabilities. SGI recommends uninstalling the program and switching
to a different mail program.

See the following URL for details about the expired status of the product:

http://support.sgi.com/spk/index.cgi?whichPage%3AResults%7CsearchText=mediamail&compat=All+Operating+Systems&ptype=All+Product+Types&status=All+Support+Policies&sort=Product+Name&columns=pn%7Clv%7Csp%7Csa%7Cmc%7Cos%7Clk%7Cno

To remove the MediaMail or MediaMail subsystem, depending on which is
installed, execute the following command:

  # versions remove mmail*

It is not necessary to reboot after removing the program from your system.

MediaMail was shipped on the following IRIX Operating Systems:

   OS Version     Vulnerable?     Patch #      Other Actions
   ----------     -----------     -------      -------------
   IRIX 3.x        unknown                     Note 1
   IRIX 4.x        unknown                     Note 1
   IRIX 5.x          yes                       Notes 1 & 3
   IRIX 6.0.x        yes                       Notes 1 & 3
   IRIX 6.1          yes                       Notes 1 & 3
   IRIX 6.2          yes                       Notes 1 & 3
   IRIX 6.3          yes                       Notes 1 & 3
   IRIX 6.4          yes                       Notes 1 & 3
   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                       Notes 2 & 3
   IRIX 6.5.14       yes                       Notes 2 & 3
   IRIX 6.5.15       yes                       Notes 2 & 3
   IRIX 6.5.16       yes                       Notes 2 & 3

   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) Uninstall the mmail or mmailp subsystem and use a different mail
        client.  The mail client in Netscape Communicator is suggested.
        Other mail clients can be found on http://freeware.sgi.com/


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

SGI wishes to thank 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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