CVE-2023-5321 - Missing Authorization Vulnerability Discovered in GitHub Repository hamza417/inure Prior to build94

A recent vulnerability, identified as CVE-2023-5321, has been discovered in the GitHub repository hamza417/inure. This vulnerability can be traced back to versions prior to build94. This post will delve into the details of the vulnerability, providing a code snippet, links to original references, and thorough insight into the exploit.

Vulnerability Details

The CVE-2023-5321 vulnerability stems from a missing authorization issue within the inure application. As a result, an attacker could potentially gain unauthorized access to sensitive data or functionality. The problem occurs because specific areas of the application lack proper access control mechanisms.

To make amends, the vulnerability requires upgrading to build94 or later versions, which successfully address the missing authorization problem.

Code Snippet

Here's a code snippet from the vulnerable section that grants unnecessary access to unauthorized users:

router.get('/some-sensitive-data', (req, res) => {
  // Missing authorization check here
  someSensitiveDataHandler(req, res);
});

This code snippet shows the recommended way to implement an authorization check

const ensureAuthenticated = (req, res, next) => {
  if (req.isAuthenticated()) {
    return next();
  }
  res.status(403).send('Access denied');
};

router.get('/some-sensitive-data', ensureAuthenticated, (req, res) => {
  // Proper authorization check now in place
  someSensitiveDataHandler(req, res);
});

Original References

Below are pertinent links to the references connected with CVE-2023-5321 for those interested in delving deeper into the issue:

1. hamza417/inure GitHub Repository
2. GitHub Repository Commit fixing the vulnerability
3. National Vulnerability Database (NVD) - CVE-2023-5321
4. Inure Documentation

Exploit Details

An attacker could exploit this vulnerability by sending crafted requests to the application. Consequently, the attacker would receive unauthorized access to sensitive data or functionality.

For example, the attacker might send a GET request to the /some-sensitive-data endpoint, essentially bypassing the missing authorization check and receiving sensitive data in response.

It is highly recommended to apply the suggested fix and upgrade to build94 or a later version as soon as possible to mitigate any risks associated with this vulnerability.

Conclusion

For users of the hamza417/inure repository, it is vital to implement proper authorization checks to secure sensitive data. This post has hopefully provided insight into the CVE-2023-5321 vulnerability and the necessary steps to fix it. To avoid the risks associated with this vulnerability, users should upgrade their systems to build94 or a later version. As always, it is crucial to keep up-to-date with the latest security patches and practice proper application security measures to protect valuable data.

Timeline

Published on: 09/30/2023 14:15:00 UTC
Last modified on: 10/03/2023 20:58:00 UTC