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Business information leak - Users

Description​

Business information is obtained, such as:

  • List of valid users.

Impact​

Access to the code to identify that there is insufficiently protected business information.

Recommendation​

According to the classification of the information found, establish the necessary controls so that the information is accessible only to the indicated persons.

Threat​

Internal attacker with access to the code.

Expected Remediation Time​

⌚ 60 minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base​

  • Attack vector: A
  • Attack complexity: L
  • Privileges required: H
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N

Temporal​

  • Exploit code madurity: F
  • Remediation level: O
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:X
  • Score:
    • Base: 2.4
    • Temporal: 2.3
  • Severity:
    • Base: Low
    • Temporal: Low

Code Examples​

Compliant code​

Only authorized users with high credentials can access sensitive information

app.post('/accessUsers', isLoggedIn, function(req, res, next){
  User.update({ _id: req.user.id}, req.body, function(err, user){
    //Add controls to see if the user is Admin before accessing business information
    const isUserAdmin = getUserCredentials(user.id);
    if (isLoggedIn && isUserAdmin){
      const users = getUserList(user.cipher_key);
      updateDOM(users);
      res.message("Valid Access);
      res.redirect('/database/users');
    }
  }
});

Non compliant code​

The application includes functionality that could allow an unauthorized user to access sensitive data

app.post('/accessUsers', isLoggedIn, function(req, res, next){
  User.update({ _id: req.user.id}, req.body, function(err, user){
    //It is possible to access the list of users with basic registration
    if isLoggedIn{
      const users = getUserList();
      updateDOM(users);
      res.message("Valid Access);
      res.redirect('/database/users');
    }
  }
});

Requirements​

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