Lodash is a popular JavaScript utility library designed to provide developers with consistent, performant, and customizable tools for common programming tasks. Comparing versions 2.4.0 and 2.3.0, released in November 2013, highlights the iterative improvements that make Lodash a valuable asset in web development. While both versions share the same core mission and licensing under MIT, the key distinction lies in the subtle enhancements and bug fixes incorporated in version 2.4.0.
Developers leveraging Lodash benefit from a comprehensive suite of functions for array manipulation, object handling, function binding, and more. Both versions offer capabilities like deep cloning with _.cloneDeep, streamlined iteration with _.forEach, and efficient data transformation using _.map. The availability on npm makes installation simple, and the detailed documentation aids smooth integration.
The move from 2.3.0 to 2.4.0, though perhaps not revolutionary, contributes to the overall stability and reliability of Lodash. Often, these incremental updates involve addressing edge cases, optimizing performance in specific scenarios, and refining the API for better usability. By staying current with the latest stable versions, developers can ensure they're utilizing the most robust and optimized iteration of the library. The frequency of updates, indicated by these releases, showcase Lodash's commitment to providing developers with useful and up-to-date tools.
All the vulnerabilities related to the version 2.4.0 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.