Security Advisories and Notifications


Security Advisory: (BEA06-81.02)

From: Oracle Corporation

Minor Subject: Anonymous binds to the embedded LDAP server are allowed.

Product(s) Affected: WebLogic Server and WebLogic Express

This security advisory (BEA06-81.02) contains updated information in Section II.

This security advisory (BEA06-81.02) contains corrected instructions for modifying the classpath on WebLogic Server 8.1 and 7.0. Please disregard Security Advisory BEA06-81.01 as this advisory BEA06-81.02 supersedes it.

Threat level: High
Remote anonymous binds are possible to the embedded LDAP server.

Severity: High
It might be possible to view user entries (but not attributes) as well as launch a denial of service attack against the embedded LDAP server.

A problem was identified that could potentially cause a security vulnerability in certain versions of WebLogic Server. A patch is 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.
This vulnerability occurs in both WebLogic Server and WebLogic Express. Subsequent references in this advisory to WebLogic Server are intended to encompass both products.

I. Advisory

All sites are vulnerable to this attack.

It is possible for a remote user to bind anonymously to the embedded LDAP server and 1) look at user entries (but not attributes) if the schema can be guessed, or 2) launch a denial of service attack against the embedded LDAP server by creating many connections to the LDAP server.

This patch resolves the issue by adding an attribute to restrict anonymous bind. After applying this path and rebooting, anonymous bind will be restricted by default.

The following versions of WebLogic Server are affected by this vulnerability

  • WebLogic Server 9.0 initial release, on all platforms
  • WebLogic Server 8.1 released through Service Pack 5, on all platforms.
  • WebLogic Server 7.0 released through Service Pack 6, on all platforms.

II. SUGGESTED ACTION


Oracle strongly recommends the following course of actions:

WebLogic Server 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 #7824046 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.
WebLogic Server 9.1 will include the functionality in this patch.

WebLogic Server 8.1
  1. Upgrade to WebLogic Server 8.1 Service Pack 5.
  2. Download and apply the patch #7824039 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 in the CLASSPATH before the weblogic.jar file.

WebLogic Server 8.1 Service Pack 6 will include the functionality in this patch.

WebLogic Server 7.0

  1. Upgrade to WebLogic Server 7.0 Service Pack 6.
  2. Download and apply the patch #7824030 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 in the CLASSPATH before the weblogic.jar file.

WebLogic Server 7.0 Service Pack 7 will include the functionality in this patch.



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