Lodash, a widely-used JavaScript utility library, saw a release of version 3.4.0 following the previous stable version 3.3.1. Both versions offer a modern build of modular utilities catering to diverse developer needs, licensed under MIT, ensuring flexibility and ease of integration into various projects. The lodash library, hosted on GitHub, is maintained by John-David Dalton, who is reachable via email.
The most notable difference resides in the releaseDate, showing a gap of roughly 10 days between the two versions: 3.3.1 was deployed around February 24th, 2015 while the 3.4.0 shipped around March 6th, 2015. Usually, a difference of this kind may indicate bug fixes, performance improvements, or new features introduced in the newer version. Developers considering an upgrade from 3.3.1 to 3.4.0 should investigate the changelog or release notes on the lodash GitHub repository for complete details on the changes. The core description remains the same, emphasizing the library's focus on providing modular utilities, making it easy for developers to cherry-pick only the functionalities they need. The library is lightweight regarding footprint and has a big impact on productivity, with an improvement of the code's readability. Both versions can be downloaded from the npm registry via the provided tarball URLs. Therefore, while the foundational utilities remain consistent, looking to upgrade your project to the latest lodash version can bring benefits related to stability and improved features or performance.
All the vulnerabilities related to the version 3.4.0 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.