CVE-2019-0231 Explained : Impact and Mitigation

Apache MINA SSLFilter security Issue

Understanding CVE-2019-0231

This CVE involves a security issue in Apache MINA related to the handling of the close_notify SSL/TLS message.

What is CVE-2019-0231?

The server fails to close the connection properly when handling the close_notify SSL/TLS message, leaving an open socket and potentially allowing clients to receive unencrypted messages.

The Impact of CVE-2019-0231

This vulnerability in the Apache MINA framework can lead to security risks due to the server retaining open sockets and the potential exposure of unencrypted data to clients.

Technical Details of CVE-2019-0231

Apache MINA SSLFilter security Issue

Vulnerability Description

The issue arises from the server not closing connections correctly after processing the close_notify SSL/TLS message, which can result in clients receiving unencrypted messages.

Affected Systems and Versions

Product: Apache MINA
Vendor: Apache Software Foundation
Affected Versions:
Apache MINA 2.1 2.1.0
Apache MINA 2.0 2.0.21

Exploitation Mechanism

The vulnerability allows attackers to potentially intercept unencrypted messages due to the server's failure to close connections properly.

Mitigation and Prevention

Steps to address the Apache MINA SSLFilter security Issue

Immediate Steps to Take

Users of Apache MINA 2.0.20 should upgrade to version 2.0.21
Users of Apache MINA 2.1.0 should upgrade to version 2.1.1

Long-Term Security Practices

Regularly update Apache MINA to the latest versions
Implement secure SSL/TLS configurations to mitigate similar vulnerabilities

Patching and Updates

Ensure timely application of patches and updates provided by Apache MINA to address security vulnerabilities.