-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                        ESB-2006.0241 -- [Solaris]
           Security Vulnerability With The "/usr/ucb/ps" Command
                               29 March 2006

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

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

Product:           /usr/ucb/ps
Publisher:         Sun Microsystems
Operating System:  Solaris 9
                   Solaris 8
Impact:            Read-only Data Access
Access:            Existing Account

Original Bulletin:
   http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102215-1

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

Sun(sm) Alert Notification
     * Sun Alert ID: 102215
     * Synopsis: Security Vulnerability With The "/usr/ucb/ps" Command
     * Category: Security
     * Product: Solaris 9 Operating System, Solaris 8 Operating System
     * BugIDs: 4798073
     * Avoidance: Patch, Workaround
     * State: Resolved
     * Date Released: 27-Mar-2006
     * Date Closed: 27-Mar-2006
     * Date Modified: 

1. Impact

   A security vulnerability in the "/usr/ucb/ps" (see ps(1B)) command may
   allow unprivileged local users the ability to see environment
   variables and their values for processes which belong to other users.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 8 without patch 109023-05
     * Solaris 9 without patch 120240-01

   x86 Platform
     * Solaris 8 without patch 109024-05
     * Solaris 9 without patch 120239-01

   Note 1: Solaris 10 is not affected by this issue.

   Note 2: The ps(1m) command is used for reporting process status. The
   full path for this command is "/usr/bin/ps". In addition, there is
   "/usr/ucb/ps" which is documented in the ps(1b) manual page. Only the
   "/usr/ucb/ps" command is affected by the vulnerability described in
   this Sun Alert.

   In general users will use the "/usr/bin/ps" version as most will not
   have the directory "/usr/ucb" in their command search path (see the
   appropriate PATH section of relevant shell manual pages).

3. Symptoms

   As an unprivileged user, running the "/usr/ucb/ps axe" command shows
   all processes, and with the "e" flags, it also includes their
   environment.
    $ /usr/ucb/ps axe
    PID TT       S  TIME COMMAND
    ...
    53 ?        S  0:00 /usr/lib/devfsadm/devfseventd LD_LIBRARY_PATH= PATH=/sb
in:
    /usr/sbin:/usr/bin TZ=GB-Eire _INIT_PREV_LEVEL=0
    ...

   In the example above we can see a root owned daemon, along with its
   environment variables and their values. 

4. Relief/Workaround

   To work around the described issue, remove the set-id bit from
   "/usr/ucb/ps".

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 8 with patch 109023-05 or later
     * Solaris 9 with patch 120240-01 or later

   x86 Platform
     * Solaris 8 with patch 109024-05 or later
     * Solaris 9 with patch 120239-01 or later

   This Sun Alert notification is being provided to you on an "AS IS"
   basis. This Sun Alert notification may contain information provided by
   third parties. The issues described in this Sun Alert notification may
   or may not impact your system(s). Sun makes no representations,
   warranties, or guarantees as to the information contained herein. ANY
   AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
   information. It is being provided to you pursuant to the provisions of
   your agreement to purchase services from Sun, or, if you do not have
   such an agreement, the Sun.com Terms of Use. This Sun Alert
   notification may only be used for the purposes contemplated by these
   agreements.

   Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  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/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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 member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBRCoAAih9+71yA2DNAQIfwgP+JeFLWsiIenzwPcxlMs+geHcVtu1b6KZg
dHghKIp0lfa6iqAHR9Dpe2EXPTxtKk/wpZIR0+g6wH6XcCb6R0DxSHH42r5a2q4M
Tq0DS2j7D9t6PMmK8mZubUgnMcIQP5rBPq5GTWjgjkpix8cuPjf62Ga/VzdyCnob
nypJ26LCkMU=
=AMFV
-----END PGP SIGNATURE-----