CVE-2022-2564: Prototype Pollution in mongoose

Background

Mongoose is a MongoDB object modeling tool designed for asynchronous environments. It provides a schema-based solution for interacting with MongoDB databases. The vulnerability affects versions of the mongoose package prior to 6.4.6 and 5.13.15. Mongoose's Schema.path() function is susceptible to prototype pollution when setting the schema object. This vulnerability allows an attacker to modify the Object prototype, potentially leading to a Denial of Service (DoS) attack.

Vulnerability Detail

The vulnerability arises from the insecure handling of the Schema.path() function in mongoose. By manipulating the schema object, an attacker can pollute the prototype chain, leading to unexpected behavior and potential security issues. In this case, the vulnerability allows for a DoS attack by causing the application to crash or consume excessive resources. The severity of this vulnerability is rated as HIGH with a CVSS score of 7.0.

npm install mongoose@9.11.3

Workaround

As a workaround, developers can manually sanitize and validate the input before passing it to the Schema.path() function. This can help mitigate the risk of prototype pollution. Here's an example of how to sanitize the input:

const mongoose = require('mongoose');

function sanitizeInput(input) {
  // Perform input sanitization
  // ...
  return sanitizedInput;
}

const schema = new mongoose.Schema({
  path: sanitizeInput(userInput)
});

Conclusion

In conclusion, the mongoose package is vulnerable to prototype pollution via the Schema.path() function. This vulnerability can be mitigated by updating to the fixed versions or implementing input sanitization. For further support on vulnerability remediation, please contact DevNack.com.

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