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             AUSCERT External Security Bulletin Redistribution

               ESB-2004.0546 -- Sun Alert Notification 57632
        Netscape NSS Library Vulnerability Affects Sun ONE/iPlanet
             Web Server and Sun Java System Application Server
                             1 September 2004

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

Product:                iPlanet Web Server
                        Sun ONE Web Server
                        Sun Java System Application Server
Publisher:              Sun Microsystems
Operating System:       Linux variants
                        UNIX variants
                        Windows
Impact:                 Execute Arbitrary Code/Commands
Access:                 Remote/Unauthenticated

Comment: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57632

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   DOCUMENT ID: 57632
   SYNOPSIS: Netscape NSS Library Vulnerability Affects Sun ONE/iPlanet
   Web Server and Sun ONE Application Server
   DETAIL DESCRIPTION:
   
Sun(sm) Alert Notification

     * Sun Alert ID: 57632
     * Synopsis: Netscape NSS Library Vulnerability Affects Sun
       ONE/iPlanet Web Server and Sun Java System Application Server
     * Category: Security
     * Product: iPlanet Web Server, Sun ONE Web Server, Sun Java System
       Application Server
     * BugIDs: 5069683
     * Avoidance: Workaround
     * State: Engineering Complete
     * Date Released: 30-Aug-2004
     * Date Closed:
     * Date Modified:
       
1. Impact

   A vulnerability exists in the Netscape Network Security Services (NSS)
   library suite which affects the Sun ONE/iPlanet Web Server and Sun
   Java System Application Server. This vulnerability may allow a remote
   unprivileged user to execute arbitrary code on vulnerable systems
   during SSLv2 connection negotiation.
   
   This issue is described in the following Internet Security Systems
   Advisory: [1]http://xforce.iss.net/xforce/alerts/id/180
   
2. Contributing Factors

   This issue can occur in the following releases:
     * Sun ONE/iPlanet Web Server 6.0 Service Pack 8 and earlier
     * Sun ONE/iPlanet Web Server 6.1 Service Pack 2 and earlier
     * Sun Java System Application Server 7.0 UR4 and earlier
     * Sun Java System Application Server 7.1 and earlier
       
   Note: All architectures and platforms are impacted by this issue.
   
3. Symptoms

   There are no visible symptoms that would show the described issue has
   been exploited.
   SOLUTION SUMMARY:
   
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 Webserver 6.1:
    1. Log into the Administration Server
    2. Select the desired instance from the pull down menu
    3. Select the "Preferences" tab and click on the "Edit Listen
       Sockets" link
    4. Click on the desired Listen Socket to be edited
    5. Disable "SSLV2" by clicking on the drop box
    6. Disable all "SSLV2 ciphers" by unselecting them
    7. Click "OK"
    8. Click on "Apply" and then "Apply changes"
    9. Restart the server and enter the SSL password when prompted
       
   For Appserver 7.0 and 7.1:
    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

   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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.
   

References

   1. http://xforce.iss.net/xforce/alerts/id/180

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