Security Advisories and Notifications


Security Advisory: (BEA04-70.00)

From: Oracle Corporation

Minor Subject: Patches are available to protect Server version information

Product(s) Affected: WebLogic Server and WebLogic Express

Threat level: Low
No known exploit exists.

Severity: Low
No known exploit exists.

A problem was identified that could potentially cause a security vulnerability in certain versions of WebLogic Server and WebLogic Express. Patches are available to correct this problem (see Section II). Oracle treats potential security problems with the highest degree of urgency and does everything possible to ensure the security of all customer assets. 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. Throughout the rest of this advisory, references to WebLogic Server apply to both products.

I. ADVISORY


This vulnerability can occur whenever an HTTP or HTTPS request is made of the server. By default, the server adds information about the version of WebLogic Server that is running.

Should an attacker discover a vulnerability that occurs in a specific version of WebLogic Server, they could use this header information to identify servers that are potentially vulnerable to this attack.

This advisory resolves this issue by changing the default setting for Web Servers from true to false.

The following versions of WebLogic Server and WebLogic Express are affected by this vulnerability:
  • WebLogic Server 8.1, released through Service Pack 3, on all platforms
  • WebLogic Server 7.0, released through Service Pack 5, on all platforms
  • WebLogic Server 6.1, released through Service Pack 6, on all platforms

II. SUGGESTED ACTION


Oracle strongly recommends the following course of actions.

WebLogic Server and WebLogic Express

For WebLogic Server 8.1 perform the following steps:
  1. Upgrade to WebLogic Server 8.1 Service Pack 3
  2. Downloadand apply the patch #7823183 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.
WebLogic Server 8.1 Service Pack 4 will include the functionality in this patch.
or
Change the Send Server Header setting in deployed Web Servers to false. For more information, see: http://e-docs.bea.com/wls/docs81/ConsoleHelp/domain_server_protocols_http.html

For WebLogic Server 7.0 perform the following steps:
  1. Upgrade to WebLogic Server 7.0 Service Pack 5
  2. Download and apply the patch #7823168 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.
WebLogic Server 7.0 Service Pack 6 will include the functionality in this patch.
or
Change the Send Server Header setting in deployed Web Servers to false. For more information, see: http://e-docs.bea.com/wls/docs70/ConsoleHelp/domain_server_connections_http.html

For WebLogic Server 6.1 perform the following steps:
  1. Upgrade to WebLogic Server 6.1 Service Pack 6
  2. Download and apply the patch #7823157 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.
WebLogic Server 6.1 Service Pack 7 will include the functionality in this patch.
or
Change the Send Server Header setting in deployed Web Servers to false. For more information, see: http://e-docs.bea.com/wls/docs61/security/lockdown.html


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