Lodash-es is a popular JavaScript utility library offering a wide range of functions for simplifying common programming tasks, designed for use in modern JavaScript environments that support ES modules. Versions 4.2.0 and 4.2.1 represent a minor iteration in its development. The key distinction lies in their release dates, with version 4.2.1 being published shortly after 4.2.0, suggesting that it probably contained bug fixes or minor improvements over its predecessor. For developers, this indicates that upgrading from 4.2.0 to 4.2.1 would likely introduce minimal to no breaking changes and simply represents a more stable and refined version of the same core functionality, so it's always recommended to use the latest one. Both versions provide the same core set of utilities, allowing developers to perform operations such as array manipulation, object handling, function binding, and more within ES module-compatible environments. The library's MIT license ensures developers have extensive freedom in using and distributing the code, enhancing its appeal for diverse projects. Lodash-es' organization on GitHub reflects an actively maintained and well-documented project, making it an excellent choice for developers seeking a reliable and performant utility library.
All the vulnerabilities related to the version 4.2.1 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.
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.
Prototype Pollution in lodash
Versions of lodash prior to 4.17.19 are vulnerable to Prototype Pollution. The functions pick, set, setWith, update, updateWith, and zipObjectDeep allow a malicious user to modify the prototype of Object if the property identifiers are user-supplied. Being affected by this issue requires manipulating objects based on user-provided property values or arrays.
This vulnerability causes the addition or modification of an existing property that will exist on all objects and may lead to Denial of Service or Code Execution under specific circumstances.
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.