Uncaught Exception Affecting socket.io package, versions >=2.3.0 <2.5.1>=3.0.0 <4.6.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SOCKETIO-7278048
- published20 Jun 2024
- disclosed19 Jun 2024
- creditPaul Taylor
Introduced: 19 Jun 2024
CVE-2024-38355 (opens in a new tab)How to fix?
Upgrade socket.io to version 2.5.1, 4.6.2 or higher.
Overview
socket.io is a node.js realtime framework server.
Affected versions of this package are vulnerable to Uncaught Exception in handling error events. If there is no listener set up for such events, an attacker can send packets containing them to crash the Node process.
Workaround
This vulnerability can be avoided by attaching a listener for error events, such as
io.on("connection", (socket) => {
socket.on("error", () => {
// ...
});
});