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Business information leak

Description​

It is possible to obtain business information, such as:

  • Username list
  • Strategic information
  • Employees information
  • Clients information
  • Providers information

Impact​

Obtain sensitive information to create new attack vectors.

Recommendation​

Based on the classification of the information found, set the necessary controls to guarantee that information is accessible only to right users.

Threat​

Authenticathed attacker from the Internet.

Expected Remediation Time​

⌚ 30 minutes.

Score​

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

Base​

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

Temporal​

  • Exploit code madurity: X
  • Remediation level: U
  • Report confidence: C

Result​

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:U/RC:C
  • Score:
    • Base: 5.3
    • Temporal: 5.3
  • Severity:
    • Base: Medium
    • Temporal: Medium

Code Examples​

Compliant code​

Validate the user is authorized to access sensitive information

function retrieveInfo(userId, sessionCookie){
  if(isUserLoggedIn(userId, sessionCokie) && isUserAdmin(userId)){
    usersInfo = getUserList();
    displayInfo(usersInfo);
  }
}

Non compliant code​

There is a method in the application that displays userInformation without verifying proper credentials

function retrieveInfo(userId){
  if(userId != ""){
    usersInfo = getUserList();
    displayInfo(usersInfo);
  }
}

Requirements​

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