From: Oracle Corporation
Minor Subject: A patch is available to prevent Denial of Service attack.
Product(s) Affected: WebLogic Server and WebLogic Express
This security advisory (BEA05-61.01) contains the corrected remedy for this vulnerability on WebLogic Server and WebLogic Express 8.1. Please disregard security advisory BEA04-61.00, as this advisory, BEA05-61.01, supersedes it.
Threat level: High
Any user with HTTPS access to a Web application can exploit this vulnerability.
WebLogic Server can crash or stop responding to requests.
Recently 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). BEA System 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 can occur when a user is browsing a Web application that contains pages protected with SSL (i.e.: the HTTPS protocol is used). Certain user actions can cause the server to fail to close the connection. This will eventually cause WebLogic Server to run out of sockets and fail to accept new requests.
This vulnerability affects any site that has Web applications protected with SSL.
The patch below addresses this vulnerability.
The following versions of WebLogic Server and WebLogic Express are affected by this vulnerability.
- WebLogic Server and WebLogic Express 8.1, released through Service Pack 2, on all platforms. This issue is fixed in Service Pack 3, but resurfaced in Service Pack 4 due to a third party software upgrade.
II. SUGGESTED ACTION
Oracle strongly recommends the following course of actions:
For WebLogic Server and WebLogic Express 8.1
Upgrade to WebLogic Server and WebLogic Express 8.1 Service Pack 4 and download and apply the patch #7824795 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 version 8.1 Service Pack 5 will include the functionality in this patch.
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 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: