-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
            AUSCERT External Security Bulletin Redistribution
                                    
                                    
           ESB-98.059 -- SGI Security Advisory 19980406-01-PX
                 IRIX LicenseManager(1M) Vulnerabilities
                              14 April 1998

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

Silicon Graphics Inc. has released the following advisory concerning a
set of vulnerabilities in the LicenseManager(1M) program. These
vulnerabilities may allow local users to manipulate root-owned files
allowing root access.

The following security bulletin is provided as a service to AusCERT's
members.  As AusCERT did not write this document, AusCERT has had no
control over its content.  As such, the decision to use any or all of this
information is the responsibility of each user or organisation, and should
be done so in accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It will
not be updated when the original bulletin is.  If downloading at a later
date, it is recommended that the bulletin is retrieved from the original
authors to ensure that the information is still current.

Contact information for SGI is included in the Security Bulletin below.
If you have any questions or need further information, please contact them
directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.


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


- -----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________
                Silicon Graphics Inc. Security Advisory

        Title:   IRIX LicenseManager(1M) Vulnerabilities
        Number:  19980406-01-PX
        Date:    April 13, 1998
______________________________________________________________________________

Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use.   Silicon
Graphics recommends that this information be acted upon as soon as possible.

Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose.  In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________

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

Under normal operation LicenseManager(1M) is a program used to view and
manage FLEXlm and NetLS software licenses. Unfortunately, a set of
vulnerabilities has been discovered that allows LicenseManager(1M) to
arbitrary manipulate root-owned files allowing root access.

Silicon Graphics Inc. 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.  This
issue will be corrected in future releases of IRIX.


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

The LicenseManager(1M) program is installed by default from license_eoe
software subsystem.  license_eoe 3.0, 3.1 and 3.1.1 are vulnerable to this
exploit.

A user account on the vulnerable system is required in order to exploit
LicenseManager(1M) locally and remotely.

This vulnerability has been publically discussed in Usenet newsgroups
and mailing lists.


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

Although patches are available for this issue, it is realized that
there may be situations where installing the patches immediately may
not be possible.

The steps below can be used to remove the vulnerability by removing
the permissions of the LicenseManager(1M) program.



     1) Become the root user on the system.

                % /bin/su -
                Password:
                #


     2) Verify a vulnerable LicenseManager(1M) program is installed.
        Only license_eoe 3.0, 3.1 and 3.1.1 are vulnerable.

                #  versions -b license_eoe
                I = Installed, R = Removed

                Name                 Date      Description
                I  license_eoe       04/30/97  License Tools 3.1.1


     3) Change the permissions on the vulnerable LicenseManger(1M) program.

                # /bin/chmod 500 /usr/etc/LicenseManager

                           ************
                           *** NOTE ***
                           ************

               Removing the permissions from the vulnerable program will
               prevent non-root users from accessing LicenseManager(1M).


     4) Verify the new permissions on the program.
        Note that the program size may be different depending on release.

                # ls -al /usr/etc/LicenseManager
                -r-x------   1 root sys  489960  Aug 12 1997 LicenseManager


     5) Return to previous user level.

                # exit
                $



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

   OS Version     Vulnerable?     Patch #      Other Actions
   ----------     -----------     -------      -------------

   IRIX 3.x          no
   IRIX 4.x          no
   IRIX 5.0.x        no
   IRIX 5.1.x        no
   IRIX 5.2          no
   IRIX 5.3          yes          1678
   IRIX 6.0.x        no
   IRIX 6.1          yes          not avail    see Note 1
   IRIX 6.2          yes          1678
   IRIX 6.3          yes          1695
   IRIX 6.4          no


   NOTES

     1) upgrade operating system or see "Temporary Solution" section.



Patches are available via anonymous FTP and your service/support provider.

The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com.  Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.



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

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

Filename:                 README.patch.1678
Algorithm #1 (sum -r):    17618 8 README.patch.1678
Algorithm #2 (sum):       40340 8 README.patch.1678
MD5 checksum:             906F439EF5223C3983075E81BABA9FB4

Filename:                 patchSG0001678
Algorithm #1 (sum -r):    59371 2 patchSG0001678
Algorithm #2 (sum):       43134 2 patchSG0001678
MD5 checksum:             0EF19CA382CE0A6AA37A00C902887FEA

Filename:                 patchSG0001678.idb
Algorithm #1 (sum -r):    57535 2 patchSG0001678.idb
Algorithm #2 (sum):       53685 2 patchSG0001678.idb
MD5 checksum:             DF0690A6221F58AB341B454EC5AEB547

Filename:                 patchSG0001678.license_eoe_sw
Algorithm #1 (sum -r):    34073 467 patchSG0001678.license_eoe_sw
Algorithm #2 (sum):       14344 467 patchSG0001678.license_eoe_sw
MD5 checksum:             4BB892CEFAB1B30E60AFBFCA60FB8973

Filename:                 README.patch.1695
Algorithm #1 (sum -r):    11915 8 README.patch.1695
Algorithm #2 (sum):       39231 8 README.patch.1695
MD5 checksum:             40C01BDA39D2E04BAA8D230F2FBD4448

Filename:                 patchSG0001695
Algorithm #1 (sum -r):    38972 2 patchSG0001695
Algorithm #2 (sum):       39704 2 patchSG0001695
MD5 checksum:             DE1959B750CB6E7325098117DBE65D3A

Filename:                 patchSG0001695.idb
Algorithm #1 (sum -r):    51707 2 patchSG0001695.idb
Algorithm #2 (sum):       52218 2 patchSG0001695.idb
MD5 checksum:             5789D0AF24D8C0045453D0269374BD62

Filename:                 patchSG0001695.license_eoe_sw
Algorithm #1 (sum -r):    49617 455 patchSG0001695.license_eoe_sw
Algorithm #2 (sum):       32263 455 patchSG0001695.license_eoe_sw
MD5 checksum:             90B7D8ACCCC1045CE77DB882748A7FC0


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

Silicon Graphics wishes to thank the Internet community at large for their
assistance in this matter.


- - -----------------------------------------------------------
- - --- Silicon Graphics Inc. Security Information/Contacts ---
- - -----------------------------------------------------------

If there are questions about this document, email can be sent to
cse-security-alert@sgi.com.

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

Silicon Graphics 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 information and patches
is sgigate.sgi.com (204.94.209.1).  Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.

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

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

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

Silicon Graphics 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------

Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.

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

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, Silicon
  Graphics is appropriately credited and the document retains and
  includes its valid PGP signature.


- -----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBNTJ6HLQ4cFApAP75AQE1uAQAil2oG0nboVUBwf6FOh0s9DLroVrxkDM2
b/DeiVogjvbSXWfRb9zFfAK8vtDiOYKfDcspnUqe8M1KvCB8bkOoRlwbvL6l9e5U
ci90g/rGZF8t+o7Jwtw/BiyVIcrV4vJjM3+0QDD3iBFTpP+jVixJlg/NcTYOlgjG
Km0WjvEDtRc=
=d7kC
- -----END PGP SIGNATURE-----


- --------------------------END INCLUDED TEXT--------------------

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBNTd25ih9+71yA2DNAQE6HwP/fmDStcU029044FsUwCq9FigauDcHQwUe
sAw+u6Ub8dONJlaq7r641tUDCgP26yedDrvZYdpXRvQjloVmmDBstnxHpxIQTAtJ
FafMhwNKbSml9YayFGb1rp1UVIdAeYosODYUMo0t4ZGQ7k9ObRiVLyclZNx/Nahq
VQnhHeZk808=
=Gblv
-----END PGP SIGNATURE-----