Security Advisories and Notifications


Security Advisory: (BEA07-147.00)

From: Oracle Corporation

Minor Subject: Malformed HTTP requests may reveal data from previous requests

Product(s) Affected: WebLogic Server and WebLogic Express

Threat level: High
An attacker may exploit this vulnerability to obtain data sent in response to previous requests

Severity: Low
Data from previous HTTP requests may be unintentionally revealed

A problem was identified that could potentially cause a security vulnerability in certain versions of WebLogic Server. Patches are available to correct this problem (see Section II). 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.

I. Advisory

An error has been found in the handling of malformed HTTP requests in WebLogic Server. An attacker could exploit this condition to find data involved in previous requests on the server, potentially from other users.

This advisory resolves the problem by enforcing proper handling for this type of request.

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

  • WebLogic Server 9.1 on all platforms
  • WebLogic Server 9.0 on all platforms

II. SUGGESTED ACTION

Oracle strongly recommends the following course of actions.

WebLogic Server and WebLogic Express versions 9.1

  • Use the Smart Update tool to install the patch for CR276583.

WebLogic Server 9.2 includes the functionality in this patch.

WebLogic Server and WebLogic Express version 9.0

  1. Download and apply the 9.0 GA Combo patch #7824963 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.
  2. Download and apply the patch #7824933 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.
  3. Place the jar for the patch at the end of the PATCH_CLASSPATH.


III. REFERENCES

Oracle greatly appreciates the contributions from the following professional organizations for their assistance in investigating this matter:

nCircle VERT



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