CVE-2021-40684 : Exploit Details and Defense Strategies

Talend ESB Runtime in all versions from 5.1 to 7.3.1-R2021-09, 7.2.1-R2021-09, 7.1.1-R2021-09, has an unauthenticated Jolokia HTTP endpoint allowing remote access to the JMX, potentially enabling attackers to manipulate the container or running software.

Understanding CVE-2021-40684

This CVE identifies a security vulnerability affecting Talend ESB Runtime versions 5.1 to 7.3.1-R2021-09, 7.2.1-R2021-09, and 7.1.1-R2021-09.

What is CVE-2021-40684?

The CVE-2021-40684 vulnerability exposes an unauthenticated Jolokia HTTP endpoint in Talend ESB Runtime, allowing unauthorized remote access to the Java Management Extensions (JMX) of the runtime container.

The Impact of CVE-2021-40684

This vulnerability could empower malicious actors to intercept and modify the container or software within it, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2021-40684

Talend ESB Runtime's security flaw can be explored through the following technical aspects:

Vulnerability Description

Unauthenticated Jolokia HTTP endpoint exposure

Affected Systems and Versions

Talend ESB Runtime versions 5.1 to 7.3.1-R2021-09, 7.2.1-R2021-09, 7.1.1-R2021-09

Exploitation Mechanism

Remote access to JMX of the runtime container

Mitigation and Prevention

To address CVE-2021-40684, consider implementing the following actions:

Immediate Steps to Take

Restrict network access to the Jolokia HTTP endpoint
Configure proper authentication mechanisms

Long-Term Security Practices

Regularly update and patch Talend ESB Runtime
Conduct security assessments and audits periodically

Patching and Updates

Stay updated with security advisories from Talend