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             AUSCERT External Security Bulletin Redistribution

                               ESB-2009.1133
Multiple Security Vulnerabilities in libtiff(3) Handling of CODE_CLEAR Code
                               5 August 2009

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

Product:           libtiff
Publisher:         Sun Microsystems
Operating System:  Solaris 8
                   Solaris 9
                   Solaris 10
                   OpenSolaris
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2008-2327  

Reference:         ESB-2008.1014
                   ESB-2008.0840
                   ESB-2008.0830

Original Bulletin: 
   http://sunsolve.sun.com/search/document.do?assetkey=1-66-265030-1

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Solution Type Sun Alert

Solution  265030 :   Multiple Security Vulnerabilities in libtiff(3) Handling 
of CODE_CLEAR Code  

Bug ID
6743799, 6866731

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

Date of Workaround Release
03-Aug-2009

SA Document Body
Multiple security vulnerabilities in libtiff(3) handling of CODE_CLEAR code:


1. Impact

Multiple security vulnerabilities have been found in libtiff(3), a library for 
reading and writing Tag Image File Format (TIFF) files. These vulnerabilities 
may allow a local or remote unprivileged user to create a carefully crafted 
LZW-encoded TIFF file that may cause an application linked with libtiff(3) to 
crash or possibly execute arbitrary code.

These issues are also described in the following document:

CVE-2008-2327 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2327
 
2. Contributing Factors

These issues can occur in the following releases:

SPARC Platform

    * Solaris 8
    * Solaris 9
    * Solaris 10 without patch 119900-07
    * OpenSolaris based upon builds snv_01 through snv_98

x86 Platform

    * Solaris 8
    * Solaris 9
    * Solaris 10 without patch 119901-07
    * OpenSolaris based upon builds snv_01 through snv_98

Note 1: Sun includes libtiff(3) on the Solaris Companion CD for Solaris 8 
(http://wwws.sun.com/software/solaris/freeware/index.html) as an unsupported 
package which installs to "/opt/sfw" and is vulnerable to this issue. Sites 
using libtiff(3) from the Solaris Companion CD will have to upgrade to a later 
version.

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

Note 3: 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.

3. Symptoms

Viewing a maliciously crafted TIFF image may lead to an unexpected application 
termination. There are no predictable symptoms that would indicate these issues 
have been exploited to execute arbitrary code.

4. Workaround

To work around the described issues, do not load TIFF images from untrusted 
sources.

5. Resolution

These issues are addressed in the following releases:

SPARC Platform

    * Solaris 10 with patch 119900-07 or later
    * OpenSolaris based upon builds snv_99 or later

x86 Platform

    * Solaris 10 with patch 119901-07 or later
    * OpenSolaris based upon builds snv_99 or later

A final resolution is pending completion for Solaris 8 and Solaris 9.

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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