Security Advisories and Notifications


Security Advisory: (BEA02-19.00)

From: Oracle Corporation

Minor Subject: Patch available to prevent DOS attack

Product(s) Affected: BEA WebLogic Server and Express

Recently a consultant with KPMG identified a problem that could potentially cause a security vulnerability in certain versions of BEA WebLogic Server and Express on Microsoft NT or Windows 2000. Patches are available to correct this problem (see section II below).  BEA treats such possibilities with the highest degree of urgency and does everything possible to ensure the security of all customer assets. As a result, we strongly suggest the following action:

      I. Read the following advisory.

      II. Apply the suggested action.

      III. If you know of any additional users interested in future security advisories, please forward them the registration instructions below.


I. ADVISORY

A potential security vulnerability was discovered that could allow users to hang BEA WebLogic Server due to a race condition in the server code.

The following BEA WebLogic Server and Express releases are affected by this vulnerability

  • Version: BEA WebLogic Server and Express 5.1.x, 6.0.x, 6.1.x and 7.0 on Microsoft NT or Windows 2000.

CAUSE

This vulnerability may occur when  WebLogic Server enters a race condition.  Servers using HTTP/S, t3, or IIOP may be affected. This problem can affect any installation on the Windows platform and can occur under various loads.  It is highly recommended that all customers on Windows platforms follow the suggested actions below.


II. SUGGESTED ACTION

Oracle strongly recommends the following course of actions:

  1. Apply the appropriate Service Pack below:
    • Version: BEA WebLogic Server and Express 7.0.
      • Action: Download and apply the patch #7822907 from OracleMetaLink as per the instructions below:
        • Select the Patches and Updates tab after logging in to OracleMetaLink.
        • Click Simple Search.
        • In the Search By field, select Patch Number from the list.
        • Enter the patch number. The patch number may be different for different product releases and platforms.
        • Select the platform (or choose generic as applicable)
        • Click Go.
        • Click Download to download the patch
      • The patch contains a JAR file(CR080901_70.jar) and new DLL for native part of code used for performance pack for WIN-NT/2000 (wlntio.dll).  Apply these patches as detailed in step 2 below.
      • When Service Pack 1 becomes available, you can use that .jar and .dll instead of these.

    • Version: BEA WebLogic Server and Express version 6.1 standalone and as part of BEA WebLogic Enterprise 6.1 on Microsoft NT or Windows 2000.
      • Action: Apply Service Pack 3 and download and apply the patch #7822894 from OracleMetaLink as per the instructions below:
        • Select the Patches and Updates tab after logging in to OracleMetaLink.
        • Click Simple Search.
        • In the Search By field, select Patch Number from the list.
        • Enter the patch number. The patch number may be different for different product releases and platforms.
        • Select the platform (or choose generic as applicable)
        • Click Go.
        • Click Download to download the patch.
      • The patch contains a JAR file (CR080901_61sp3.jar) and new DLL for native part of code used for performance pack for WIN-NT/2000 (wlntio.dll).  Apply these patches as detailed in step 2 below.
      • When Service Pack 4 becomes available, you can use that .jar and .dll instead of these.

    • Version: BEA WebLogic Server and Express version 6.0 standalone and as part of BEA WebLogic Enterprise 6.0 on Microsoft NT or Windows 2000.
      • Action: Apply Service Pack 2 with Rolling Patch 3 and then download and apply the patch #7822880 from OracleMetaLink as per the instructions below:
        • Select the Patches and Updates tab after logging in to OracleMetaLink.
        • Click Simple Search.
        • In the Search By field, select Patch Number from the list.
        • Enter the patch number. The patch number may be different for different product releases and platforms.
        • Select the platform (or choose generic as applicable)
        • Click Go.
        • Click Download to download the patch.
      • The patch contains a JAR file (CR080901_60sp2rp3.jar) and new DLL for native part of code used for performance pack for WIN-NT/2000. (wlntio.dll).  Apply these patches as detailed in step 2 below.
      • When SP2 RP4 becomes available, you can use that jar and .dll  instead of these.

    • Version: BEA WebLogic Server and Express version 5.1 standalone and as part of BEA WebLogic Enterprise 5.1.x on Microsoft NT or Windows 2000.
      • Action: Apply Service Pack 12 or higher and then download and apply the patch #7822870 from OracleMetaLink as per the instructions below:
        • Select the Patches and Updates tab after logging in to OracleMetaLink.
        • Click Simple Search.
        • In the Search By field, select Patch Number from the list.
        • Enter the patch number. The patch number may be different for different product releases and platforms.
        • Select the platform (or choose generic as applicable)
        • Click Go.
        • Click Download to download the patch.
      • The patch contains a JAR file (CR080901_51sp12.jar) and new DLL for native part of code used for performance pack for WIN-NT/2000. (wlntio.dll).  Apply these patches as detailed in step 2 below.(wlntio.dll).
      • When Service Pack 13 becomes available, you can use that jar and .dll instead of these,

  2. Apply the .jar in front of weblogic claspath ( Classpath setting passed as weblogic.class.path in startup script).

    The .dll should go in front of PATH. It replaces the .dll in your WEBLOGIC_HOME/bin directory. You can replace the .dllL with new .dll. If you have copied the .dll to some other location that was referenced in the PATH environment variable, you mustreplace the .dll in that location OR copy the .dll to a new location.  Be sure to include the new location at the beginning of the PATH environment variable in your startup script.

    It is important to use the .jar file along with the .dll file. Only applying one of the 2 files will produce serious errors when requests are made to server.


SECURITY COMMUNICATIONS

Oracle strongly suggests that customers apply the remedies recommended in all our security advisories. Oracle also urges customers to apply every Service/Maintenance Pack as they are released. Service/Maintenance Packs include a roll-up of all bug fixes for each version of the product, as well as each of the prior Service/Maintenance Packs. Service/Maintenance Packs and information about them can be found at: http://www.oracle.com/technology/software/products/ias/bea_main.html

Note: Information about securing WebLogic Server and WebLogic Express can be found at http://edocs.bea.com/wls/docs103/security.html. Specific lockdown information is provided at http://e-docs.bea.com/wls/docs103/lockdown/index.html. We strongly encourage you to review this documentation to ensure your server deployment is securely configured.

As a policy, if there are any security-related issues with any Oracle product, Oracle will distribute an advisory and instructions with the appropriate course of action. Because the security of your site, data, and code is our highest priority, we are committed to communicating all security-related issues clearly and openly.

All previous advisories can be viewed at: http://www.oracle.com/technology/deploy/security/wls-security.

Additional users who wish to register for product advisory distribution should follow the registration directions at: http://www.oracle.com/technology/deploy/security/alerts.htm.

Security issues can be reported to Oracle by following the directions at: http://www.oracle.com/technology/deploy/security/alerts.htm.

Thank you,
Oracle Corporation