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Vulnerability · Published Jan 12, 2022 · Assigned by GitHub_M

CVE-2022-21676Uncaught Exception in engine.io

High 7.5

In plain English

A high-severity security flaw in engine.io from socketio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.9%top 13.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmengine.io4.1.2GHSA-273r-mgr4-v34f
npmengine.io5.2.1GHSA-273r-mgr4-v34f
npmengine.io6.1.1GHSA-273r-mgr4-v34f

Affected products (as reported)

VendorProductVersions
socketio engine.io >= 4.0.0, < 4.1.2>= 5.0.0, < 5.2.1>= 6.0.0, < 6.1.1

Weakness: CWE-754 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References