CVE-2022-0866 Explained : Impact and Mitigation

This CVE-2022-0866 article provides detailed information about a concurrency issue affecting WildFly and JBoss EAP versions when Elytron is enabled.

Understanding CVE-2022-0866

This section delves into the impact and technical details of CVE-2022-0866.

What is CVE-2022-0866?

CVE-2022-0866 is a concurrency issue leading to the wrong caller principal being returned from the session context of an EJB configured with a RunAs principal, affecting JBoss EAP and WildFly versions.

The Impact of CVE-2022-0866

The vulnerability allows for the wrong caller principal to be returned from EJBComponent#getCallerPrincipal and for EJBComponent#isCallerInRole to return incorrect values due to the concurrency issue.

Technical Details of CVE-2022-0866

This section explores the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The issue stems from the EJBComponent#incomingRunAsIdentity field being just a SecurityIdentity, allowing incorrect caller principal returns in concurrent environments.

Affected Systems and Versions

The vulnerability affects all versions of JBoss EAP from 7.1.0 and all versions of WildFly 11+ when Elytron is enabled.

Exploitation Mechanism

In a concurrent environment with multiple users invoking an EJB configured with a RunAs principal, the exploit allows the wrong caller principal to be returned.

Mitigation and Prevention

This section covers immediate steps to take and long-term security practices to mitigate the vulnerability.

Immediate Steps to Take

Users are advised to apply the necessary patches released by the vendor to address the vulnerability in affected systems.

Long-Term Security Practices

Implement robust access controls and regularly update and patch systems to prevent potential exploits.

Patching and Updates

Stay informed about security updates and promptly apply patches provided by the vendor to safeguard against CVE-2022-0866.