Browserify is a powerful tool for JavaScript developers, enabling the use of Node.js-style modules within browser environments. Versions 9.0.1 and 9.0.2 are closely related, sharing the same core functionality of bundling JavaScript code and managing dependencies for browser-based applications. Both versions rely on a comprehensive set of dependencies, including modules like module-deps, browser-pack, and insert-module-globals, indicating a robust system for dependency resolution and code transformation. Developers benefit from features like the ability to use require() statements in their browser code, facilitating modular development and code organization. They equally support shims for Node.js built-in modules, ensuring compatibility and streamlining the development process.
Examining the releaseDate field, version 9.0.2 was released on February 21, 2015, shortly after version 9.0.1 which was released on the same day.
The core dependencies and devDependencies sections are identical between the two package versions. Since only the "releaseDate" differs, it is fair to say that browserify version 9.0.2 likely includes minor bug fixes or very small adjustments compared to 9.0.1. For developers already using browserify 9.0.1, upgrading to 9.0.2 is likely a safe and simple process, potentially addressing edge-case scenarios or subtle improvements without introducing breaking changes.
All the vulnerabilities related to the version 9.0.2 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.
Potential Command Injection in shell-quote
Affected versions of shell-quote do not properly escape command line arguments, which may result in command injection if the library is used to escape user input destined for use as command line arguments.
The following characters are not escaped properly: >,;,{,}
Bash has a neat but not well known feature known as "Bash Brace Expansion", wherein a sub-command can be executed without spaces by running it between a set of {} and using the , instead of to seperate arguments. Because of this, full command injection is possible even though it was initially thought to be impossible.
const quote = require('shell-quote').quote;
console.log(quote(['a;{echo,test,123,234}']));
// Actual "a;{echo,test,123,234}"
// Expected "a\;\{echo,test,123,234\}"
// Functional Equivalent "a; echo 'test' '123' '1234'"
Update to version 1.6.1 or later.
Improper Neutralization of Special Elements used in a Command in Shell-quote
The shell-quote package before 1.7.3 for Node.js allows command injection. An attacker can inject unescaped shell metacharacters through a regex designed to support Windows drive letters. If the output of this package is passed to a real shell as a quoted argument to a command with exec(), an attacker can inject arbitrary commands. This is because the Windows drive letter regex character class is [A-z] instead of the correct [A-Za-z]. Several shell metacharacters exist in the space between capital letter Z and lower case letter a, such as the backtick character.