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Use of an insecure channel

Description​

The system transmits information through a channel without encryption.

Impact​

Capture confidential information and credentials in plain text.

Recommendation​

Deploy the application over an encrypted communication channel, for instance, HTTPS with TLS.

Threat​

Anonymous attacker on adjacent network performing a man-in-the-middle.

Expected Remediation Time​

⌚ 15 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: N
  • User interaction: R
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N

Temporal​

  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: C

Result​

  • Vector string: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
  • Score:
    • Base: 3.5
    • Temporal: 3.2
  • Severity:
    • Base: Low
    • Temporal: Low

Code Examples​

Compliant code​

Use secure channels to deploy the application

import org.apache.commons.net.ftp.FTPSClient
import org.apache.commons.net.smtp.SMTPSClient

fun main() {
  val ftpClient = FTPClient()
  val smtpsClient = SMTPSClient()
  val spec2: ConnectionSpec = ConnectionSpec.Builder(
    ConnectionSpec.MODERN_TLS
  )
}

Non compliant code​

Some insecure channels are used to deploy the application

import org.apache.commons.net.ftp.FTPClient
import org.apache.commons.net.smtp.SMTPClient
import org.apache.commons.net.telnet.TelnetClient

fun main() {
  val telnet = TelnetClient()

  val ftpClient = FTPClient()
  val ftpsClient = FTPSClient()

  val smtpClient = SMTPClient()
  val smtpsClient = SMTPSClient()
}

Requirements​

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