CVE-2020-11612 (High) detected in netty-codec-4.1.13.Final.jar

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CVE-2020-11612 - High Severity Vulnerability

Vulnerable Library - netty-codec-4.1.13.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 dependency file: /pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec/4.1.13.Final/netty-codec-4.1.13.Final.jar

Dependency Hierarchy:

• transport-5.6.4.jar (Root Library)
  • transport-netty4-client-5.6.4.jar
    • ❌ netty-codec-4.1.13.Final.jar (Vulnerable Library)

Found in HEAD commit: 2c2c9f752b1dec579a12ba0bcc3d8dab738d7cff

Found in base branch: vp-rem

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 (org.elasticsearch.client:transport): 7.8.0

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⛑️ Automatic Remediation will be attempted for this issue.