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Business information leak - Customers or providers

Description​

Sensitive information such as customer or providers lists, emails, phone numbers or identifiers can be obtained from the application.

Impact​

Obtain sensitive information to craft new attack vectors.

Recommendation​

Implement security controls to ensure that the leaked information can be accessed only by authenticated and authorized users.

Threat​

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

Temporal​

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

Result​

  • Vector string: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:X/RL:O/RC:X
  • Score:
    • Base: 4.7
    • Temporal: 4.5
  • Severity:
    • Base: Medium
    • Temporal: Medium

Code Examples​

Compliant code​

Passwords should always be stored in encrypted values and never returned as plain text in a response

const registerUser = async (req, res, next) => {
  const { username, HashPassword } = req.body
  try {
    await User.create({
      username,
      HashPassword,
    }).then(user =>
      res.status(200).json({
        message: "User successfully created",
        user,
      })
    )
  } catch (err) {
    res.status(401).json({
      message: "Something went wrong. User not created",
      error: error.mesage,
    })
  }
}

Non compliant code​

Some sensitive information (Password) in returned in plain text values

const registerUser = async (req, res, next) => {
  const { username, password } = req.body
  try {
    await User.create({
      username,
      password,
    }).then(user =>
      res.status(200).json({
        message: "User successfully created",
        user,
        password,
      })
    )
    return user, password
  } catch (err) {
    res.status(401).json({
      message: "Something went wrong: User not created",
      error: error.mesage,
    })
  }
}

Requirements​

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