CVE-2020-11612 (High) detected in netty-codec-4.1.43.Final.jar, netty-codec-4.1.34.Final.jar

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CVE-2020-11612 - High Severity Vulnerability

Vulnerable Libraries - netty-codec-4.1.43.Final.jar, netty-codec-4.1.34.Final.jar

netty-codec-4.1.43.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: https://netty.io/

Path to vulnerable library: /home/wss-scanner/.ivy2/cache/io.netty/netty-codec/jars/netty-codec-4.1.43.Final.jar

Dependency Hierarchy:

• play-netty-server_2.13-2.8.2.jar (Root Library)
  • netty-reactive-streams-http-2.0.4.jar
    • netty-reactive-streams-2.0.4.jar
      • netty-handler-4.1.43.Final.jar
        • ❌ netty-codec-4.1.43.Final.jar (Vulnerable Library)

netty-codec-4.1.34.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: http://netty.io/

Path to vulnerable library: /home/wss-scanner/.ivy2/cache/io.netty/netty-codec/jars/netty-codec-4.1.34.Final.jar

Dependency Hierarchy:

• play-netty-server_2.13-2.7.5.jar (Root Library)
  • netty-reactive-streams-http-2.0.3.jar
    • netty-reactive-streams-2.0.3.jar
      • netty-handler-4.1.34.Final.jar
        • ❌ netty-codec-4.1.34.Final.jar (Vulnerable Library)

Found in HEAD commit: 2819174635979a19573ec0ce8e3e2b63a3848079

Found in base branch: master

Vulnerability Details

The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.

Publish Date: 2020-04-07

URL: CVE-2020-11612

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://netty.io/news/2020/02/28/4-1-46-Final.html

Release Date: 2020-04-07

Fix Resolution (io.netty:netty-codec): 4.1.46.Final

Direct dependency fix Resolution (com.typesafe.play:play-netty-server_2.13): 2.8.8

Fix Resolution (io.netty:netty-codec): 4.1.46.Final

Direct dependency fix Resolution (com.typesafe.play:play-netty-server_2.13): 2.8.8