Lodash versions 0.2.0 and 0.2.1 represent incremental updates to this popular JavaScript utility library, designed as a drop-in replacement for Underscore.js. Both versions, authored by John-David Dalton, aim to provide performance enhancements, bug fixes, and extended functionalities beyond Underscore.js, making JavaScript development more efficient and reliable.
The core description remains consistent between the two releases, highlighting Lodash's central role in simplifying common programming tasks. Examining the provided data, the most notable distinction lies in the release dates. Version 0.2.0 was published on May 22, 2012, while version 0.2.1 followed shortly after on May 24, 2012. Although the provided data doesn't explicitly detail the specific changes, this quick succession suggests that version 0.2.1 likely addresses immediate bugs or very minor improvements discovered after the initial 0.2.0 release.
For developers, Lodash's primary appeal is its comprehensive suite of utilities for array manipulation, object handling, function binding, and more. These features significantly reduce boilerplate code and improve code readability. Developers considering adopting Lodash should evaluate if those bug fixes or improvements are worth the update, although as general guide updating to the latest stable versions is a good practice. Both versions emphasize performance, aiming to provide faster execution compared to alternatives. By leveraging Lodash, developers can streamline their JavaScript development process, write more maintainable code, and potentially improve the performance of their applications.
All the vulnerabilities related to the version 0.2.1 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.
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.