CVE-2021-28167 : Vulnerability Insights and Analysis

A vulnerability in Eclipse OpenJ9 version 0.25.0 allows users to access static members without proper initialization, potentially exposing uninitialized values.

Understanding CVE-2021-28167

This CVE affects Eclipse OpenJ9 up to version 0.25.0, enabling users to bypass class initialization methods.

What is CVE-2021-28167?

In Eclipse OpenJ9 up to version 0.25.0, the use of certain APIs allows users to call static methods or access static members without running the class initialization method, potentially leading to the observation of uninitialized values.

The Impact of CVE-2021-28167

This vulnerability may be exploited by malicious actors to access sensitive information or disrupt the normal operation of affected systems.

Technical Details of CVE-2021-28167

This section provides a deeper look into the vulnerability details.

Vulnerability Description

The issue arises from the JVM pre-resolving certain constant pool entries when using the jdk.internal.reflect.ConstantPool API, allowing unauthorized access to static elements.

Affected Systems and Versions

Eclipse OpenJ9 versions up to 0.25.0 are vulnerable to this exploit.

Exploitation Mechanism

By leveraging the flaw in the ConstantPool API, an attacker can circumvent class initialization processes and interact with static components.

Mitigation and Prevention

Discover how to address and safeguard systems from the CVE-2021-28167 vulnerability.

Immediate Steps to Take

Users are advised to apply relevant patches and updates provided by Eclipse Foundation to mitigate the risk of exploitation.

Long-Term Security Practices

Implement strict access controls and regular security audits to prevent unauthorized access to critical resources.

Patching and Updates

Stay informed about security advisories and promptly install patches released by Eclipse OpenJ9 to maintain a secure environment.