CVE-2020-11612 (High) detected in netty-codec-4.1.8.Final.jar

Vulnerable Library - netty-codec-4.1.8.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: /samples/client/petstore/java/vertx/build.gradle

Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.8.Final/1bd0a2d032e5c7fc3f42c1b483d0f4c57eb516a3/netty-codec-4.1.8.Final.jar

Dependency Hierarchy:

• vertx-web-client-3.4.2.jar (Root Library)
  • vertx-core-3.4.2.jar
    • netty-codec-http-4.1.8.Final.jar
      • ❌ netty-codec-4.1.8.Final.jar (Vulnerable Library)

Found in HEAD commit: 4b7a8d7d7384aa6a27d6309c35ade0916edae7ed

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

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 (io.vertx:vertx-web-client): 3.5.0