A Vulnerability in Network Security Services (NSS) Affects Sun Java System Web Server and Sun ONE Application Server

A local or remote unprivileged user may be able to cause the Sun Java System Web Server or the Sun ONE Application Server to exit unexpectedly due to a security vulnerability in Network Security Services (NSS).

Sun(sm) Alert Notification
     * Sun Alert ID: 102670
     * Synopsis: A Vulnerability in Network Security Services (NSS)
       Affects Sun Java System Web Server and Sun ONE Application Server
     * Category: Security
     * Product: Sun ONE Application Server 7, Standard Edition, Sun Java
       System Web Server 6.0 Service Pack 8
     * BugIDs: 6289081
     * Avoidance: Upgrade
     * State: Resolved
     * Date Released: 31-Oct-2006
     * Date Closed: 31-Oct-2006
     * Date Modified:

1. Impact

   A local or remote unprivileged user may be able to cause the Sun Java
   System Web Server or the Sun ONE Application Server to exit
   unexpectedly due to a security vulnerability in Network Security
   Services (NSS). The ability to disable a Sun Java System Web Server or
   a Sun ONE Application Server is a type of Denial of Service (DoS).

   Additional information about Network Security Services (NSS) is
   available at:
     * http://www.mozilla.org/projects/security/pki/nss/

2. Contributing Factors

   This issue can occur in the following releases for all platforms:
     * Sun Java System Web Server 6.0 without Service Pack 10
     * Sun ONE Application Server 7 without Update 3

   Note: This issue only affects systems which have SSLv2 enabled. Follow
   the steps listed in the Relief/Workaround section below to determine
   if SSLv2 is enabled on the system.

3. Symptoms

   There are no reliable symptoms that would indicate the described issue
   has been exploited.

4. Relief/Workaround

   To eliminate the possibility of the described issue from occurring,
   disable SSLv2 and all associated SSLv2 ciphers as shown below:

   For Webserver 6.0:
    1. Log into the Administration Server
    2. Select the desired server instance from the pull down menu
    3. Select the "Preferences" tab and click on the "Edit Listen
       Sockets" link
    4. For the Listen Socket that has SSL enabled, select "Attributes"
    5. Under "Ciphers" select "SSL2"
    6. Uncheck "SSL version 2" (One may also disable all of the "SSLV2
       ciphers" by unselcting them)
    7. Click "OK" then "Quit"
    8. Click "Apply" in the upper-right corner of the browser
    9. Click "Apply Changes" and restart the server
   10. Enter the SSL password when prompted

   For Appserver 7.0:
    1. Log into the Administration Server
    2. Select the desired instance from the pull down menu
    3. Expand the HTTP Server node
    4. Select the "HTTP Listeners" node
    5. Select the desired SSL instance to be edited
    6. Uncheck the "SSL2 Enabled" checkbox to disable SSLv2
    7. Click "Save"
    8. Click on "Apply changes required"
    9. Restart the server

5. Resolution

   This issue is addressed in the following releases:
     * Sun Java System Web Server 6.0 Service Pack 10 or later
     * Sun ONE Application Server 7 Update 3 or later

   Sun Java System Web Server 6.0 Service Pack 10 can be found at:
   http://www.sun.com/download/products.xml?id=43a84f89

   Sun ONE Application Server 7 Update can be found at:
   http://www.sun.com/download/products.xml?id=438cfb75

   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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