Man-in-the-Middle (MitM) Affecting io.netty:netty-handler package, versions [,4.0.24.Final)

  • Attack Complexity


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  • snyk-id


  • published

    20 Sep 2017

  • disclosed

    16 Feb 2017

  • credit


How to fix?

Upgrade netty to versions 3.9.6 or higher.


io.netty:netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients.

Affected versions of this package are vulnerable to Man-in-the-Middle (MitM) attacks. The SSLv3 protocol uses nondeterministic CBC padding, which makes it easier for Man-in-the-Middle (MitM) attackers to obtain cleartext data via a padding-oracle attack. This is also known as the POODLE vulnerability.