GCP Terraform Misconfiguration: Weak Cryptographic Cloud DNS Signature

Abstract

Terraform 組態使用不安全的簽署演算法來啟用 Cloud DNS 網域的網域名稱系統安全性 (DNSSEC)。

Explanation

DNSSEC 透過提供使用數位簽章進行 DNS 回應驗證的能力來防止 DNS 假冒。然而，任何使用 SHA-1 的 DNSSEC 簽署演算法都容易受到風險不斷增加的攻擊。與數位簽章一起使用時，SHA-1 就不會被視為安全雜湊演算法。

範例 1：以下範例顯示使用不安全簽署演算法 rsasha1 啟用 DNSSEC 的 Terraform 組態。


resource "google_dns_managed_zone" "zone-demo" {
...
  dnssec_config {
    default_key_specs {
      algorithm = "rsasha1"
      ...
    }
  }
...
}

References

[1] HashiCorp dns_managed_zone

[2] Google Cloud Use advanced DNSSEC

[3] Tony Finch SHA-1 chosen prefix collisions and DNSSEC

[4] IETF RFC 8624 Algorithm Implementation Requirements and Usage Guidance for DNSSEC

[5] Standards Mapping - CIS Google Cloud Computing Platform Benchmark Recommendation 3.4, Recommendation 3.5

[6] Standards Mapping - Common Weakness Enumeration CWE ID 327

[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000166, CCI-002418, CCI-002422, CCI-002450

[8] Standards Mapping - FIPS200 SC

[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)

[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection

[11] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 6.2.2 Algorithms (L2 L3)

[13] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration

[14] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

[15] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography

[16] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography

[17] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography

[18] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II

[19] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II

[20] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II

[21] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II

[22] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II

[23] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II

desc.structural.hcl.gcp_terraform_misconfiguration_weak_cryptographic_cloud_dns_signature