From: Oracle Corporation
Minor Subject: Dynamic updates to applications deployed as exploded jars may result in incorrect access checking
Product(s) Affected: WebLogic Server and WebLogic Express
Threat level: Medium
Unauthorized access is possible due to application access constraints that are not correctly enforced
User-level access constraints may be ignored after an application dynamic update and redeployment
A problem was identified that could potentially cause a security vulnerability in certain versions of WebLogic Server. An upgrade 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.
A dynamic update to an application using exploded jars may result in incorrect access control after the application is dynamically redeployed. If a data file (for example, index.html or index.jsp) is dynamically updated while the application is running, the security constraints in the deployment descriptors may be ignored until the server is restarted or the application fully redeployed.
This advisory resolves the issue by enforcing the proper access control.
The following versions of WebLogic Server and WebLogic Express are affected by this vulnerability:
- WebLogic Server 8.1 released through Service Pack 5, on all platforms
II. SUGGESTED ACTION
Oracle strongly recommends the following course of actions.
WebLogic Server and WebLogic Express version 8.1
- Upgrade to Service Pack 6.
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: