CVE-2017-16198: Directory Traversal in ritp

Background

The ritp package is an npm package used for local development. It provides functionality for resolving relative file paths. However, versions of ritp prior to 1.0.6 are vulnerable to a directory traversal vulnerability. This vulnerability allows a malicious actor to access files outside of the intended directory root, potentially leading to the disclosure of private files on the vulnerable system.

Vulnerability Detail

The directory traversal vulnerability in ritp arises from the package's improper resolution of relative file paths. By manipulating the file path in a specific way, an attacker can traverse directories and access files outside of the intended directory root. For example, an attacker can send a GET request with a crafted file path to retrieve sensitive files, such as /etc/passwd. This vulnerability has a CVSS score of 7.5, indicating a high severity.

Workaround

As there is no patch available, a possible workaround is to manually validate and sanitize file paths before using them with ritp. This can be done by ensuring that the file paths only contain allowed characters and do not include any directory traversal sequences. Here is an example of how to sanitize a file path in Node.js:

const path = require('path');

function sanitizeFilePath(filePath) {
  const allowedChars = /^[a-zA-Z0-9_-]+$/;
  const sanitizedPath = path.normalize(filePath);

  if (!allowedChars.test(path.basename(sanitizedPath))) {
    throw new Error('Invalid file path');
  }

  return sanitizedPath;
}

This code snippet uses the path module in Node.js to normalize the file path and ensure it does not contain any directory traversal sequences. It also checks that the basename of the file path only contains allowed characters.

Conclusion

The ritp package is vulnerable to a directory traversal vulnerability that allows attackers to access files outside of the intended directory root. No patch is available for this vulnerability, so it is recommended to only use ritp for local development purposes. If the functionality provided by ritp is required for production, it is advised to use an alternative package that does not suffer from this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for ritp →

FAQ