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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== 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 Linux variants Windows Impact: Denial of Service Access: Remote/Unauthenticated Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102670-1 - --------------------------BEGIN INCLUDED TEXT-------------------- 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 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRUk4cSh9+71yA2DNAQKhvgP/SnLVwcc17jFegJox85hkgG9sBVoCAE0/ ADXTrB7uW2hna5Ms7tQy0g7XYdFA5JE7/ObG7TDK6DdRKMBjv+HhaUJN21MDcE0a ub97YR1mdHBkbXifLi0YPY5X59w09e1B/b1BdI/1n51jhoJbrCHvBTpRWphoy0E6 i/59r3iwSaE= =wCJC -----END PGP SIGNATURE-----