Reliance on Package-level Scope
Weakness ID: 487 (Weakness Variant)Status: Incomplete
+ Description

Description Summary

Java packages are not inherently closed; therefore, relying on them for code security is not a good practice.
+ Time of Introduction
  • Implementation
+ Applicable Platforms



+ Common Consequences

Any data in a Java package can be accessed outside of the Java framework if the package is distributed.


The data in a Java class can be modified by anyone outside of the Java framework if the packages is distributed.

+ Likelihood of Exploit


+ Demonstrative Examples

Example 1

(Bad Code)
Example Language: Java 
package math;
public class Lebesgue implements Integration{
public final Static String youAreHidingThisFunction(functionToIntegrate){

return ...;
+ Potential Mitigations

Design through Implementation: Data should be private static and final whenever possible. This will assure that your code is protected by instantiating early, preventing access and tampering.

+ Other Notes

The purpose of package scope is to prevent accidental access. However, this protection provides an ease-of-software-development feature but not a security feature, unless it is sealed.

+ Relationships
NatureTypeIDNameView(s) this relationship pertains toView(s)
ChildOfWeakness ClassWeakness Class485Insufficient Encapsulation
Development Concepts (primary)699
Research Concepts (primary)1000
+ Taxonomy Mappings
Mapped Taxonomy NameNode IDFitMapped Node Name
CLASPRelying on package-level scope
+ Content History
Submission DateSubmitterOrganizationSource
CLASPExternally Mined
Modification DateModifierOrganizationSource
2008-07-01Eric DalciCigitalExternal
updated Time of Introduction
2008-09-08CWE Content TeamMITREInternal
updated Common Consequences, Relationships, Other Notes, Taxonomy Mappings
Previous Entry Names
Change DatePrevious Entry Name
2008-04-11Relying on Package-level Scope