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Azure ARM Misconfiguration: Improper Blob Storage Access Control

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Abstract

範本將定義一個允許匿名存取的 Azure Blob 儲存體容器。

Explanation

依預設，Azure Blob 儲存體容器會阻止匿名存取其 Blob。

存取組態不足會將系統暴露在外，並擴大組織的受攻擊面。開放公開存取的資源可能會無意間洩露敏感資料。

範例 1：以下範例範本將定義一個 Azure Blob 儲存體容器，其中 publicAccess 屬性設定為 Container。這會允許匿名存取容器的所有 Blob 和資料。


{
    "type": "Microsoft.Storage/storageAccounts/blobServices/containers",
    "apiVersion": "2021-04-01",
    "name": "[format('{0}/default/{1}', parameters('storageAccountName'), parameters('containerName'))]",
    "properties":{
        "publicAccess": "Container"
    }
    ,
    "dependsOn": [
        "[resourceId('Microsoft.Storage/storageAccounts', parameters('storageAccountName'))]"
    ]
}

References

[1] Microsoft Secure your Azure Storage account

[2] Microsoft Prevent anonymous public read access to containers and blobs - Remediate anonymous public access

[3] Standards Mapping - CIS Microsoft Azure Foundations Benchmark Recommendation 3.7

[4] Standards Mapping - Common Weakness Enumeration CWE ID 284, CWE ID 359

[5] Standards Mapping - Common Weakness Enumeration Top 25 2019 [4] CWE ID 200

[6] Standards Mapping - Common Weakness Enumeration Top 25 2020 [7] CWE ID 200

[7] Standards Mapping - Common Weakness Enumeration Top 25 2021 [20] CWE ID 200

[8] Standards Mapping - Common Weakness Enumeration Top 25 2024 [17] CWE ID 200

[9] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002038, CCI-002475

[10] Standards Mapping - FIPS200 CM

[11] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection

[12] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-5 Access Restrictions for Change (P1), IA-11 Re-Authentication (P0), SC-28 Protection of Information at Rest (P1)

[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-5 Access Restrictions for Change, SC-11 Trusted Path, SC-28 Protection of Information at Rest

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

[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.2 Access Control Architectural Requirements (L2 L3), 1.4.4 Access Control Architectural Requirements (L2 L3)

[16] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage

[17] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage

[18] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling

[19] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration, A7 Insecure Cryptographic Storage, A8 Failure to Restrict URL Access

[20] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure

[21] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure

[22] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.6, Requirement 8.4

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.4

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.3.1, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1

[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.1, Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[35] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 863

[36] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 863

[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002340 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002340 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002340 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002340 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002340 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002340 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002340 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002340 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002340 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002340 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002340 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002340 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002340 CAT II

[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II

[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II

[59] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)

[60] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage

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