Lodash-es is a popular JavaScript utility library offering a wide range of functions to simplify common programming tasks, delivered as ES modules for modern JavaScript environments. Versions 4.5.0 and 4.5.1 represent minor iterations on this robust foundation. Both versions share identical descriptions, licensing under MIT, and the same author, John-David Dalton, indicating a continued commitment to quality and open-source principles. The repository remains consistent, pointing to the primary Lodash GitHub repository. Key functionalities and the purpose of the library remain unchanged between these versions; lodash-es continues to provide a modular way for developers to access Lodash's extensive toolkit for array manipulation, object handling, string operations, and functional programming techniques.
The primary difference lies in the release date, with version 4.5.1 appearing five days after 4.5.0. This suggests that version 4.5.1 likely contains bug fixes, performance improvements, or minor adjustments relative to 4.5.0; these are common reasons for patch releases in semantic versioning. Developers considering an upgrade should investigate the specific commit history or release notes (if available) between these versions to understand the precise changes. While both versions offer the core benefits of Lodash as ES modules, opting for the newer 4.5.1 is generally recommended to leverage any potential stability enhancements or refinements introduced in the later release. The dist.tarball links provide the direct source for each version via the npm registry.
All the vulnerabilities related to the version 4.5.1 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.