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                                   CERT-Renater

                        Note d'Information No. 2009/VULN369
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DATE                      : 14/09/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris 8, Solaris 9, Solaris 10, OpenSolaris
                             running w(1) utility.

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http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-266348-1
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Solution Type: Sun Alert

Solution  266348 :   Security Vulnerability in the w(1) Utility may
Lead to Execution of Arbitrary Code

Bug ID: 6821298

Product:

Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris

Date of Workaround Release: 10-Sep-2009

A heap overflow vulnerability in the w(1) utility:

1. Impact

A heap overflow vulnerability in the w(1) utility may allow a local
unprivileged user to execute arbitrary code with root privileges.
Sun acknowledges with thanks, Monarch Rich
"1c239c43f521145fa8385d64a9c32243
http://unsecurityresearch.blogspot.com" for discovering and
reporting this issue.

2. Contributing Factors

This issue can occur in the following releases:
SPARC Platform
  * Solaris 8
  * Solaris 9 without patch 113718-04
  * Solaris 10 without patch 142286-01
  * OpenSolaris based upon builds snv_01 through snv_123

x86 Platform
  * Solaris 8
  * Solaris 9 without patch 113996-05
  * Solaris 10 without patch 142285-01
  * OpenSolaris based upon builds snv_01 through snv_123

Note 1: Solaris 8 entered EOSL Phase 2 on 1 April 2009. Entitlement to
patches developed on or after 1 April 2009 requires the purchase of
the Solaris 8 Vintage Patch Service. See note in section 5 for more
details..

Note 2: OpenSolaris distributions may include additional bug fixes
above and beyond the build from which it was derived.  To determine
the base build of OpenSolaris, the following command can be used:

 $ uname -v
 snv_86

3. Symptoms

There are no predictable symptoms to indicate that this issue has been
exploited to execute arbitrary code with root privileges.

4. Workaround

There is no workaround for this issue.  Please see the Resolution
section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform
  * Solaris 9 with patch 113718-04 or later
  * Solaris 10 with patch 142286-01 or later
  * OpenSolaris based upon builds snv_124 or later

x86 Platform
  * Solaris 9 with patch 113996-05 or later
  * Solaris 10 with patch 142285-01 or later
  * OpenSolaris based upon builds snv_124 or later

A final resolution is pending completion for Solaris 8.

Note: The READMEs of Solaris 8 patches developed on or after 1 April
2009 are available to all customers. However, Solaris 8 entered EOSL
Phase 2 on April 1, 2009 and thus entitlement for these patches,
including those that fix security vulnerabilities, requires the
purchase of the Solaris 8 Vintage Patch Service. More information
about the Solaris 8 Vintage Patch Service is available at:

http://www.sun.com/service/eosl/Solaris8.html

For more information on Security Sun Alerts, see Technical
Instruction ID 213557.

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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved


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