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Date : Thu, 25 Oct 2007 18:33:41 +0200
Type : VULN
Sujet : CERT-Renater : 2007/VULN407 (Sun: Multiple Memory Corruption Vulnerabilities in Layout Engine for Mozilla 1.7)
====================================================================                                   CERT-Renater

                        Note d'Information No. 2007/VULN407
_____________________________________________________________________

DATE                      : 25/10/2007

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running Sun JDK and JRE.

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

Sun(sm) Alert Notification
     * Sun Alert ID: 103121
     * Synopsis: Multiple Memory Corruption Vulnerabilities in Layout
       Engine for Mozilla 1.7
     * Category: Security
     * Product: Mozilla v1.7
     * BugIDs: 6499440
     * Avoidance: Workaround
     * State: Workaround
     * Date Released: 22-Oct-2007
     * Date Closed:
     * Date Modified:

1. Impact

   The Layout Engine in the Mozilla 1.7 application (see mozilla(1))
   contains multiple memory corruption vulnerabilities which may allow a
   remote user who is able to create a web page which is visited by a
   local user using the Mozilla browser, or who sends a specially crafted
   email that is read by a local user using Mozilla, to either cause the
   Mozilla application to crash or execute arbitrary code with the
   privileges of the user running Mozilla. The ability of a remote user
   to cause the Mozilla application to crash is a type of Denial of
   Service (DoS).

   The following Mozilla advisory describes four separate memory
   corruption issues:

   http://www.mozilla.org/security/announce/2006/mfsa2006-65.html

   This Sun Alert corresponds to two of the issues described in the
   Mozilla advisory above:

   https://bugzilla.mozilla.org/show_bug.cgi?id07809

   https://bugzilla.mozilla.org/show_bug.cgi?id51328

   Also note that Mozilla 1.7 is not affected by the following two
   vulnerabilities mentioned in the advisory:

   https://bugzilla.mozilla.org/show_bug.cgi?id10267

   https://bugzilla.mozilla.org/show_bug.cgi?id50370

   Additional references that describe these issues can be found in the
   following documents:

   CVE-2006-5464 at http://nvd.nist.gov/nvd.cfm?cvename=CVE-2006-5464

   CERT VU#495288 at http://www.kb.cert.org/vuls/id/495288

   CERT Security Alert TA06-312A at
   http://www.us-cert.gov/cas/techalerts/TA06-312A.html

2. Contributing Factors

   These issues can occur in the following releases:

   SPARC Platform
     * Mozilla 1.7 (for Solaris 8, 9 and 10)

   x86 Platform
     * Mozilla 1.7 (for Solaris 8, 9 and 10)

   Note: Mozilla 1.4 may be vulnerable to one or more of these security
   issues. Customers are advised to upgrade to Mozilla 1.7 to get the
   security fixes once they are available.

   To determine the version of Mozilla on a Solaris system, the following
   command can be run:
    % /usr/sfw/bin/mozilla -version
    Mozilla 1.7, (Sun Java Desktop System), build 2005031721

3. Symptoms

   There are no predictable symptoms that would indicate the described
   issues have been exploited.

4. Relief/Workaround

   These vulnerabilities may be avoided by disabling Javascript:
    1. Open the "Preferences" dialog from the Edit menu
    2. Select the "Advanced" tree
    3. Select the "Scripts & Plug-ins" leaf
    4. Uncheck the "Navigator and Mail & Newsgroups" check boxes
    5. Click the OK button.

5. Resolution

   A final resolution is pending completion.

   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

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

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