Lodash evolved between versions 0.8.2 and 0.9.0, marking a notable shift in its underlying goal and project structure. Version 0.8.2 positioned itself as a direct competitor and replacement for Underscore.js, emphasizing performance improvements, bug fixes, and added functionalities compared to its predecessor. The older version was hosted on the bestiejs/lodash GitHub repository.
However, version 0.9.0 redefined Lodash's purpose, branding itself as a utility library focused on delivering consistency, customization options, enhanced performance, and a wealth of supplementary features beyond Underscore's scope. This version signals a maturation of the library, aiming for a more comprehensive and adaptable toolset for developers. Accompanying this change was a shift in the project's GitHub repository to lodash/lodash, reflecting the project's independent identity.
Both versions were authored by John-David Dalton. Developers considering Lodash should note this evolution. Version 0.8.2 is suitable for those seeking a faster Underscore replacement, while 0.9.0 appeals to those needing a more versatile and customizable utility belt for diverse JavaScript projects and a broader set of functionalities. The move to its dedicated repository enhances Lodash's standing as a distinct, self-sufficient library in the JavaScript ecosystem. The license remained MIT for both versions, ensuring continued freedom in utilizing the library.
All the vulnerabilities related to the version 0.9.0 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.