Apache MINA Vulnerability: SSL/TLS Message Handling Flaw
Summary
CVE-2019-0231: Handling of the close_notify SSL/TLS message does not lead to a connection closure, leading the server to retain the socket opened and to have the client potentially receive clear text messages afterward. Affects mina across 2 version ranges.
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No fix is published. How to fix ↓
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Background
Apache MINA is a network application framework that enables developers to create high-performance and high-scalability network applications easily. It provides a simple and flexible API for building various types of network protocols. However, a vulnerability has been identified in its handling of SSL/TLS messages, which could lead to serious security risks.
Vulnerability Detail
The vulnerability arises from the improper handling of the close_notify SSL/TLS message, which does not result in the closure of the connection. This flaw allows the server to keep the socket open, potentially exposing the client to clear text messages after the connection should have been terminated. This could lead to sensitive information being leaked, as the client may receive unencrypted data that was intended to be secure.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can implement additional security measures such as monitoring network traffic for unexpected clear text messages and ensuring that sensitive data is encrypted before transmission. However, the best course of action is to apply the available patches as soon as possible.
Conclusion
The vulnerability in Apache MINA regarding SSL/TLS message handling poses significant risks by potentially exposing sensitive information. Users are strongly advised to update their packages to the latest versions to mitigate these risks effectively. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities in open-source software.
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FAQ
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
Versions 2.0.20 and 2.1.0 are specifically affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check your application using the Vulert playground without any signup.
The main consequence is the exposure of sensitive information due to the retention of open sockets, which may allow clients to receive unencrypted messages.
While the best solution is to update to the patched versions, temporary measures include monitoring network traffic and ensuring data encryption.
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