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🛡️ AWS S3 Bucket Policy is not set to deny HTTP requests🟢

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RulePoliciesFlags
✉️ dec-x-d5fbfc401

Description​

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Description​

At the Amazon S3 bucket level, you can configure permissions through a bucket policy, making objects accessible only through HTTPS.

Rationale​

By default, Amazon S3 allows both HTTP and HTTPS requests. To allow access to Amazon S3 objects only through HTTPS, you must explicitly deny access to HTTP requests. Bucket policies that allow HTTPS requests without explicitly denying HTTP requests do not comply with this recommendation.

Audit​

To allow access to HTTPS, you can use a bucket policy with the effect allow and a condition that checks for the key "aws:SecureTransport": "true". This means that HTTPS requests are allowed, but it does not deny HTTP requests. To explicitly deny HTTP access, ensure that there is also a bucket policy with the effect deny that contains the key "aws:SecureTransport": "false". You may also require TLS by setting a policy to deny any version lower than the one you wish to require, using the condition NumericLessThan and the key "s3:TlsVersion": "1.2".

From Console​

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Remediation​

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Remediation​

From Console​

  1. Log in to AWS Management Console and open the Amazon S3 console using https://console.aws.amazon.com/s3/

  2. Select the checkbox next to the bucket.

  3. Click Permissions.

  4. Click Bucket Policy.

  5. Add either of the following to the existing policy, filling in the required information:

    {
        "Sid": "{{optional}}",
        "Effect": "Deny",
        "Principal": "*",
        "Action": "s3:*",
        "Resource": "arn:aws:s3:::{{bucket_name}}/*",
        "Condition": {
            "Bool": {
                "aws:SecureTransport": "false"
            }
        }
    }

    or

    {
        "Sid": "{{optional}}",
        "Effect": "Deny",
        "Principal": "*",
        "Action": "s3:*",
        "Resource": [
            "arn:aws:s3:::{{bucket_name}}",
            "arn:aws:s3:::{{bucket_name}}/*"
        ],
        "Condition": {
            "NumericLessThan": {
                "s3:TlsVersion": "1.2"
            }
        }
    }

  6. Click Save.

  7. Repeat for all the buckets in your AWS account that contain sensitive data.

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policy.yaml​

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Linked Framework Sections​

SectionSub SectionsInternal RulesPoliciesFlagsCompliance
💼 APRA CPG 234 → 💼 54 Cryptographic techniques can be used to control access to sensitive data, both in storage and in transit. The strength of the cryptographic techniques deployed would be commensurate with the sensitivity and criticality of the data as well as other supplementary or compensating controls (refer to Attachment E for further guidance).2526no data
💼 AWS Foundational Security Best Practices v1.0.0 → 💼 [S3.5] S3 general purpose buckets should require requests to use SSL11no data
💼 AWS Well-Architected → 💼 SEC09-BP03 Authenticate network communications3no data
💼 CIS AWS v1.3.0 → 💼 2.1.2 Ensure S3 Bucket Policy allows HTTPS requests11no data
💼 CIS AWS v1.4.0 → 💼 2.1.2 Ensure S3 Bucket Policy is set to deny HTTP requests11no data
💼 CIS AWS v1.5.0 → 💼 2.1.2 Ensure S3 Bucket Policy is set to deny HTTP requests - Level 2 (Automated)11no data
💼 CIS AWS v2.0.0 → 💼 2.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests - Level 2 (Automated)11no data
💼 CIS AWS v3.0.0 → 💼 2.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests - Level 2 (Automated)11no data
💼 CIS AWS v4.0.0 → 💼 2.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests (Automated)1no data
💼 CIS AWS v4.0.1 → 💼 2.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests (Automated)1no data
💼 CIS AWS v5.0.0 → 💼 2.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests (Automated)1no data
💼 CIS AWS v6.0.0 → 💼 3.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests (Automated)1no data
💼 CIS AWS v7.0.0 → 💼 3.1.1 Ensure S3 Bucket Policy is set to deny HTTP requests (Automated)1no data
💼 Cloudaware Framework → 💼 Data Encryption65no data
💼 FedRAMP High Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)49103no data
💼 FedRAMP High Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)248188no data
💼 FedRAMP High Security Controls → 💼 AC-4(4) Flow Control of Encrypted Information (H)3031no data
💼 FedRAMP High Security Controls → 💼 AC-17(2) Protection of Confidentiality and Integrity Using Encryption (M)(H)22no data
💼 FedRAMP High Security Controls → 💼 IA-5(1) Password-based Authentication (L)(M)(H)113no data
💼 FedRAMP High Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)10999no data
💼 FedRAMP High Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)49no data
💼 FedRAMP High Security Controls → 💼 SC-8 Transmission Confidentiality and Integrity (L)(M)(H)1926no data
💼 FedRAMP High Security Controls → 💼 SC-8(1) Cryptographic Protection (L)(M)(H)925no data
💼 FedRAMP High Security Controls → 💼 SC-13 Cryptographic Protection (L)(M)(H)1844no data
💼 FedRAMP High Security Controls → 💼 SC-23 Session Authenticity (M)(H)822no data
💼 FedRAMP Low Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)103no data
💼 FedRAMP Low Security Controls → 💼 IA-5(1) Password-based Authentication (L)(M)(H)13no data
💼 FedRAMP Low Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)50no data
💼 FedRAMP Low Security Controls → 💼 SC-8 Transmission Confidentiality and Integrity (L)(M)(H)126no data
💼 FedRAMP Low Security Controls → 💼 SC-8(1) Cryptographic Protection (L)(M)(H)25no data
💼 FedRAMP Low Security Controls → 💼 SC-13 Cryptographic Protection (L)(M)(H)44no data
💼 FedRAMP Moderate Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)103no data
💼 FedRAMP Moderate Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)1169no data
💼 FedRAMP Moderate Security Controls → 💼 AC-17(2) Protection of Confidentiality and Integrity Using Encryption (M)(H)22no data
💼 FedRAMP Moderate Security Controls → 💼 IA-5(1) Password-based Authentication (L)(M)(H)13no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)783no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)49no data
💼 FedRAMP Moderate Security Controls → 💼 SC-8 Transmission Confidentiality and Integrity (L)(M)(H)126no data
💼 FedRAMP Moderate Security Controls → 💼 SC-8(1) Cryptographic Protection (L)(M)(H)25no data
💼 FedRAMP Moderate Security Controls → 💼 SC-13 Cryptographic Protection (L)(M)(H)44no data
💼 FedRAMP Moderate Security Controls → 💼 SC-23 Session Authenticity (M)(H)22no data
💼 ISO/IEC 27001:2013 → 💼 A.10.1.1 Policy on the use of cryptographic controls2122no data
💼 ISO/IEC 27001:2013 → 💼 A.14.1.2 Securing application services on public networks55no data
💼 ISO/IEC 27001:2013 → 💼 A.14.1.3 Protecting application services transactions1115no data
💼 ISO/IEC 27001:2022 → 💼 5.14 Information transfer916no data
💼 NIST CSF v1.1 → 💼 DE.AE-1: A baseline of network operations and expected data flows for users and systems is established and managed1179no data
💼 NIST CSF v1.1 → 💼 DE.CM-1: The network is monitored to detect potential cybersecurity events2165no data
💼 NIST CSF v1.1 → 💼 ID.AM-3: Organizational communication and data flows are mapped48no data
💼 NIST CSF v1.1 → 💼 PR.AC-5: Network integrity is protected (e.g., network segregation, network segmentation)1184no data
💼 NIST CSF v1.1 → 💼 PR.DS-2: Data-in-transit is protected1797no data
💼 NIST CSF v1.1 → 💼 PR.DS-5: Protections against data leaks are implemented89152no data
💼 NIST CSF v1.1 → 💼 PR.DS-6: Integrity checking mechanisms are used to verify software, firmware, and information integrity2327no data
💼 NIST CSF v1.1 → 💼 PR.IP-1: A baseline configuration of information technology/industrial control systems is created and maintained incorporating security principles (e.g. concept of least functionality)533no data
💼 NIST CSF v1.1 → 💼 PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities3179no data
💼 NIST CSF v1.1 → 💼 PR.PT-4: Communications and control networks are protected1184no data
💼 NIST CSF v2.0 → 💼 DE.CM-01: Networks and network services are monitored to find potentially adverse events187no data
💼 NIST CSF v2.0 → 💼 DE.CM-09: Computing hardware and software, runtime environments, and their data are monitored to find potentially adverse events185no data
💼 NIST CSF v2.0 → 💼 ID.AM-03: Representations of the organization's authorized network communication and internal and external network data flows are maintained128no data
💼 NIST CSF v2.0 → 💼 PR.AA-06: Physical access to assets is managed, monitored, and enforced commensurate with risk84no data
💼 NIST CSF v2.0 → 💼 PR.DS-01: The confidentiality, integrity, and availability of data-at-rest are protected248no data
💼 NIST CSF v2.0 → 💼 PR.DS-02: The confidentiality, integrity, and availability of data-in-transit are protected219no data
💼 NIST CSF v2.0 → 💼 PR.DS-10: The confidentiality, integrity, and availability of data-in-use are protected249no data
💼 NIST CSF v2.0 → 💼 PR.IR-01: Networks and environments are protected from unauthorized logical access and usage165no data
💼 NIST SP 800-53 Revision 4 → 💼 CM-7 (1) PERIODIC REVIEW34no data
💼 NIST SP 800-53 Revision 4 → 💼 CM-7 LEAST FUNCTIONALITY567no data
💼 NIST SP 800-53 Revision 4 → 💼 SC-7 BOUNDARY PROTECTION23531no data
💼 NIST SP 800-53 Revision 4 → 💼 SC-8 TRANSMISSION CONFIDENTIALITY AND INTEGRITY422no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4 Information Flow Enforcement32120207no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4(2) Information Flow Enforcement _ Processing Domains3638no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4(15) Information Flow Enforcement _ Detection of Unsanctioned Information1011no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-17(2) Remote Access _ Protection of Confidentiality and Integrity Using Encryption1322no data
💼 NIST SP 800-53 Revision 5 → 💼 IA-5(1) Authenticator Management _ Password-based Authentication13no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(4) Boundary Protection _ External Telecommunications Services49no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-8 Transmission Confidentiality and Integrity5926no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-8(1) Transmission Confidentiality and Integrity _ Cryptographic Protection924no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-8(2) Transmission Confidentiality and Integrity _ Pre- and Post-transmission Handling16no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-12(3) Cryptographic Key Establishment and Management _ Asymmetric Keys10no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-13 Cryptographic Protection432no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-23 Session Authenticity515no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-23(3) Session Authenticity _ Unique System-generated Session Identifiers14no data
💼 NIST SP 800-53 Revision 5 → 💼 SI-7(6) Software, Firmware, and Information Integrity _ Cryptographic Protection27no data
💼 PCI DSS v3.2.1 → 💼 2.2.4 Configure system security parameters to prevent misuse.40no data
💼 PCI DSS v3.2.1 → 💼 4.1 Use strong cryptography and security protocols to safeguard sensitive cardholder data during transmission over open, public networks.1928no data
💼 PCI DSS v3.2.1 → 💼 8.2.1 Using strong cryptography, render all authentication credentials unreadable during transmission and storage on all system components.15no data
💼 PCI DSS v4.0.1 → 💼 2.2.6 System security parameters are configured to prevent misuse.40no data
💼 PCI DSS v4.0.1 → 💼 4.2.1 Strong cryptography and security protocols are implemented to safeguard PAN during transmission over open, public networks.228no data
💼 PCI DSS v4.0.1 → 💼 8.3.2 Strong cryptography is used to render all authentication factors unreadable during transmission and storage on all system components.15no data
💼 PCI DSS v4.0 → 💼 2.2.6 System security parameters are configured to prevent misuse.2340no data
💼 PCI DSS v4.0 → 💼 4.2.1 Strong cryptography and security protocols are implemented to safeguard PAN during transmission over open, public networks.2928no data
💼 PCI DSS v4.0 → 💼 8.3.2 Strong cryptography is used to render all authentication factors unreadable during transmission and storage on all system components.715no data
💼 SOC 2 → 💼 CC6.1-8 Manages Identification and Authentication2234no data