Security controls bypass or absence - Firewall

Security controls bypass or absence - Firewall

Description

The firewall security verifications either do not exist or can be bypassed.

Impact

Bypass security validations to perform different attacks.

Recommendation

Guarantee that firewall security mechanisms and access rules are active and cannot be bypassed.

Threat

Anonymous attacker from the Internet.

Expected Remediation Time

⌚ 60 minutes.

Score

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

Base

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

Temporal

  • Exploit code maturity: H
  • Remediation level: U
  • Report confidence: C

Result

  • Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:H/RL:U/RC:C
  • Score:
    • Base: 3.7
    • Temporal: 3.7
  • Severity:
    • Base: Low
    • Temporal: Low

Score 4.0

Default score using CVSS 4.0. It may change depending on the context of the src.

Base 4.0

  • Attack vector: N
  • Attack complexity: H
  • Attack Requirements: N
  • Privileges required: N
  • User interaction: N
  • Confidentiality (VC): N
  • Integrity (VI): L
  • Availability (VA): N
  • Confidentiality (SC): N
  • Integrity (SI): N
  • Availability (SA): N

Threat 4.0

  • Exploit maturity: A

Result 4.0

  • Vector string: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:A
  • Score:
    • CVSS-BT: 6.3
  • Severity:
    • CVSS-BT: Medium

Compliant code

The firewall is safely configured over a secure port

                gateway: "My gateway name"
firewall_service:
  enabled: true
  policy: 'drop'
  log_default_action: true
  firewall_rules:
- :id: '1' :enabled: true :description: 'disallow_connections' :policy: 'disallow' :destination_port_range: '5353' :destination_ip: '00.01.02.03' :source_port_range: '5353' :source_ip: 'Any'

Non compliant code

The firewall configuration allows insecure port connections through its configuration files

                gateway: "My gateway name"
firewall_service:
  enabled: true
  policy: 'drop'
  log_default_action: true
  firewall_rules:
- :id: '1' :enabled: true :description: 'allow_connections' :policy: 'allow' :destination_port_range: '*' :destination_ip: '00.01.02.03' :source_port_range: '*' :source_ip: 'Any'

Requirements

Fixes

Free trial message
Free trial
Search for vulnerabilities in your apps for free with Fluid Attacks' automated security testing! Start your 21-day free trial and discover the benefits of the Continuous Hacking Essential plan. If you prefer the Advanced plan, which includes the expertise of Fluid Attacks' hacking team, fill out this contact form.