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AUSCERT External Security Bulletin Redistribution
ESB-2006.0798 -- [Solaris]
A Vulnerability in Network Security Services (NSS) Affects Sun Java System
Web Server and Sun ONE Application Server
2 November 2006
AusCERT Security Bulletin Summary
Product: Sun ONE Application Server 7 Standard Edition
Sun Java System Web Server 6.0
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Denial of Service
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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:
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
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.
There are no reliable symptoms that would indicate the described issue
has been exploited.
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
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
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:
Sun ONE Application Server 7 Update can be found at:
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
notification may only be used for the purposes contemplated by these
Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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