Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the `engine.io` package starting from version `4.0.0`, including those who uses depending packages like `socket.io`. Versions prior to `4.0.0` are not impacted. A fix has been released for each major branch, namely `4.1.2` for the `4.x.x` branch, `5.2.1` for the `5.x.x` branch, and `6.1.1` for the `6.x.x` branch. There is no known workaround except upgrading to a safe version.
CVE-2022-21676 - High Severity Vulnerability
The realtime engine behind Socket.IO. Provides the foundation of a bidirectional connection between client and server
Library home page: https://registry.npmjs.org/engine.io/-/engine.io-4.1.1.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/engine.io/package.json
Dependency Hierarchy: - karma-6.3.4.tgz (Root Library) - socket.io-3.1.2.tgz - :x: **engine.io-4.1.1.tgz** (Vulnerable Library)
Found in HEAD commit: 96bf3d0a1509b7a9171a7ed4f1f06cd127d18957
Found in base branch: master
Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the `engine.io` package starting from version `4.0.0`, including those who uses depending packages like `socket.io`. Versions prior to `4.0.0` are not impacted. A fix has been released for each major branch, namely `4.1.2` for the `4.x.x` branch, `5.2.1` for the `5.x.x` branch, and `6.1.1` for the `6.x.x` branch. There is no known workaround except upgrading to a safe version.
Publish Date: 2022-01-12
URL: CVE-2022-21676
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.Type: Upgrade version
Origin: https://github.com/socketio/engine.io/security/advisories/GHSA-273r-mgr4-v34f
Release Date: 2022-01-12
Fix Resolution (engine.io): 4.1.2
Direct dependency fix Resolution (karma): 6.3.5
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