CVE-2019-9518 (High) detected in netty-codec-http2-4.1.8.Final.jar

Vulnerable Library - netty-codec-http2-4.1.8.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-http2/4.1.8.Final/105a99ee5767463370ccc3d2e16800bd99f5648e/netty-codec-http2-4.1.8.Final.jar

Dependency Hierarchy:

• vertx-web-client-3.4.2.jar (Root Library)
  • vertx-core-3.4.2.jar
    • ❌ netty-codec-http2-4.1.8.Final.jar (Vulnerable Library)

Found in HEAD commit: 4b7a8d7d7384aa6a27d6309c35ade0916edae7ed

Found in base branch: master

Vulnerability Details

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

Publish Date: 2019-08-13

URL: CVE-2019-9518

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/2019/08/13/4-1-39-Final.html

Release Date: 2019-08-13

Fix Resolution (io.netty:netty-codec-http2): 4.1.39.Final

Direct dependency fix Resolution (io.vertx:vertx-web-client): 3.5.0