Lodash version 2.4.2 arrived on April 26, 2015, succeeding version 2.4.1 which was released on December 3, 2013. Both versions share a common foundation as utility libraries designed to provide consistency, customization options, enhanced performance, and a wealth of useful extras for JavaScript developers. Licensed under the MIT license, Lodash offers a permissive framework for integrating its functions into diverse projects. The source code for both versions resides in the same GitHub repository under lodash/lodash.git, demonstrating the evolution of the library over time.
While the core description remains consistent, the key difference lies in the release date, a gap of roughly 16 months. This implies that version 2.4.2 likely includes bug fixes, performance improvements, and potentially new utility functions or enhancements built upon the existing 2.4.1 codebase. Although specific changelogs aren't provided in the metadata, developers considering an upgrade from 2.4.1 to 2.4.2 should anticipate a more refined and stable experience. For those initiating new projects, opting for the newer 2.4.2 version is generally recommended as it benefits from accumulated improvements. Lodash's value stems from its extensive collection of pre-built functions catering to array manipulation, object handling, string processing, and more, saving considerable development time. The consistent API across versions minimizes the learning curve and facilitates seamless integration into JavaScript workflows.
All the vulnerabilities related to the version 2.4.2 of the package
Prototype Pollution in lodash
Versions of lodash before 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep allows a malicious user to modify the prototype of Object via {constructor: {prototype: {...}}} causing the addition or modification of an existing property that will exist on all objects.
Update to version 4.17.12 or later.
Prototype Pollution in lodash
Versions of lodash before 4.17.5 are vulnerable to prototype pollution.
The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via __proto__ causing the addition or modification of an existing property that will exist on all objects.
Update to version 4.17.5 or later.
Prototype Pollution in lodash
Versions of lodash before 4.17.11 are vulnerable to prototype pollution.
The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via {constructor: {prototype: {...}}} causing the addition or modification of an existing property that will exist on all objects.
Update to version 4.17.11 or later.
Regular Expression Denial of Service (ReDoS) in lodash
lodash prior to 4.7.11 is affected by: CWE-400: Uncontrolled Resource Consumption. The impact is: Denial of service. The component is: Date handler. The attack vector is: Attacker provides very long strings, which the library attempts to match using a regular expression. The fixed version is: 4.7.11.
Regular Expression Denial of Service (ReDoS) in lodash
All versions of package lodash prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.
Steps to reproduce (provided by reporter Liyuan Chen):
var lo = require('lodash');
function build_blank(n) {
var ret = "1"
for (var i = 0; i < n; i++) {
ret += " "
}
return ret + "1";
}
var s = build_blank(50000) var time0 = Date.now();
lo.trim(s)
var time_cost0 = Date.now() - time0;
console.log("time_cost0: " + time_cost0);
var time1 = Date.now();
lo.toNumber(s) var time_cost1 = Date.now() - time1;
console.log("time_cost1: " + time_cost1);
var time2 = Date.now();
lo.trimEnd(s);
var time_cost2 = Date.now() - time2;
console.log("time_cost2: " + time_cost2);
Command Injection in lodash
lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function.