Security Advisories and Notifications

Subject: SECURITY ADVISORY (CVE-2009-1012)
From: Oracle Corporation
Minor Subject: Security vulnerability in WebLogic plug-ins for Apache and IIS Web servers
Product(s) Affected: WebLogic Server

Oracle treats potential security problems with a high degree of urgency and endeavors to take appropriate steps to help ensure the security of our customers’ systems. As a result, Oracle strongly suggests the following actions:

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 included in this advisory.


This vulnerability may impact the availability, confidentiality or integrity of WebLogic Server applications, which use the Apache or IIS web server configured with the WebLogic plug-in for Apache or IIS respectively. This vulnerability may be remotely exploitable without authentication, i.e. it may be exploited over a network without the need for a username and password.


CVSS Severity Score: 10.0
Attack Range (AV): Network
Attack Complexity (AC): Low
Authentication Level (Au): None
Impact Type: Complete confidentiality, integrity and availability violation
CVSS Base Score Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

10.0 is the CVSS base score if the Web Server is running as root because a complete machine takeover can occur. If the Web Server is not running as root, 7.5 is the CVSS base score as complete machine takeover cannot occur.
Usage of CVSS by Oracle:


The following versions of WebLogic Server and Weblogic Express are affected by this vulnerability

Apache and ISAPI Plug-ins dated prior to April 14, 2009 which implies:
  • Oracle WebLogic Server 10.3
  • Oracle WebLogic Server 10.0 released through MP1
  • Oracle WebLogic Server 9.2 released through MP3
  • Oracle WebLogic Server 9.1
  • Oracle WebLogic Server 9.0
  • Oracle WebLogic Server 8.1 released through SP6
  • Oracle WebLogic Server 7.0 released through SP7


WebLogic Server plug-ins for Apache and IIS web servers:

Download and apply the latest web server plug-in patch # 8343141 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. Please note that the patch is uploaded against WLS 10.3 and the zip file contains patches for all platforms.
• Click Go.
• Click Download to download the patch and follow the instructions in the readme file inside the zip file to install the patch.

Note: The WebLogic plug-ins include all cumulative bug-fixes and thus include fixes for all previously released advisories and CVE-2009-1016. These plug-ins are compatible with all versions of WebLogic Server.


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:

Note: Information about securing WebLogic Server and WebLogic Express can be found at Specific lockdown information is provided at 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:

Additional users who wish to register for product advisory distribution should follow the registration directions at:

Security issues can be reported to Oracle by following the directions at:

Thank you,
Oracle Corporation