When an application exposes a remote interface for an entity
bean, it might also expose methods that get or set the bean's data. These
methods could be leveraged to read sensitive information, or to change data in
ways that violate the application's expectations, potentially leading to other
vulnerabilities.
Time of Introduction
Architecture and Design
Implementation
Demonstrative Examples
Example 1
(Bad Code)
XML
<ejb-jar>
<enterprise-beans>
<entity>
<ejb-name>EmployeeRecord</ejb-name>
<home>com.wombat.empl.EmployeeRecordHome</home>
<remote>com.wombat.empl.EmployeeRecord</remote>
...
</entity>
...
</enterprise-beans>
</ejb-jar>
Potential Mitigations
Phase
Description
Declare Java beans "local" when possible. When a bean must be remotely
accessible, make sure that sensitive information is not exposed, and
ensure that your application logic performs appropriate validation of
any data that might be modified by an attacker.
Other Notes
Entity beans that expose a remote interface become part of an
application's attack surface. For performance reasons, an application should
rarely use remote entity beans, so there is a good chance that a remote
entity bean declaration is an error.
Description
