Reino: Encapsulation

La encapsulación consiste en crear límites fuertes. En un explorador web esto puede suponer la seguridad de que tu codificación móvil no se vea comprometido por otro código móvil. En el servidor puede significar la diferenciación entre los datos validados y los que no lo están, entre los datos de un usuario y los de otro, o entre los diferentes usuarios, los datos que pueden ver y los que no.

AWS CloudFormation Misconfiguration: Improper Lambda Access Control Policy

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Abstract

La plantilla define un principal lambda comodín.

Explanation

Una configuración comodín para los principales lambda infringe el principio de privilegios mínimos y permite que un atacante invoque el lambda desde cualquier cuenta.

Ejemplo 1: La siguiente plantilla de ejemplo define un principal lambda comodín.


{
    "Resources": {
        "LambdaPerm": {
            "Type": "AWS::Lambda::Permission",
            "Properties": {
            "SourceAccount": "AWS::AccountId",
            "SourceArn": "bucket.Arn",
            "FunctionName": "function.Arn",
            "Action": "lambda:InvokeFunction",
            "Principal": "*"
            }
        }
    },
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "Lambda Permission"
}

References

[1] Amazon Web Services Security in AWS Lambda

[2] Amazon Web Services AWS Documentation: AWS::Lambda::Permission

[3] Standards Mapping - Common Weakness Enumeration CWE ID 749

[4] Standards Mapping - Common Weakness Enumeration Top 25 2020 [18] CWE ID 522

[5] Standards Mapping - Common Weakness Enumeration Top 25 2021 [18] CWE ID 862

[6] Standards Mapping - Common Weakness Enumeration Top 25 2022 [16] CWE ID 862

[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-001084, CCI-002165

[8] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation

[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1), AC-6 Least Privilege (P1), SC-3 Security Function Isolation (P1)

[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, AC-6 Least Privilege, SC-3 Security Function Isolation

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

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.1.3 General Access Control Design (L1 L2 L3)

[13] Standards Mapping - OWASP Top 10 2004 A2 Broken Access Control

[14] Standards Mapping - OWASP Top 10 2007 A4 Insecure Direct Object Reference

[15] Standards Mapping - OWASP Top 10 2010 A4 Insecure Direct Object References

[16] Standards Mapping - OWASP Top 10 2013 A4 Insecure Direct Object References

[17] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control

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

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.2

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.5.4

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4

[27] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control

[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control

[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.4 - Authentication and Access Control, Control Objective C.2.3 - Web Software Access Controls

[30] Standards Mapping - SANS Top 25 2009 Porous Defenses - CWE ID 285

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

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

[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3480.1 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3480.1 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3480.1 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3480.1 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3480.1 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3480.1 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3480.1 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

[55] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authorization (WASC-02)

[56] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authorization

desc.structural.json.aws_cloudformation_misconfiguration_improper_lambda_access_control_policy.base

Abstract

La plantilla define un principal lambda comodín.

Explanation


AWSTemplateFormatVersion: "2010-09-09"
Description: Lambda Permission
Resources:
  LambdaPerm:
  Type: AWS::Lambda::Permission
  Properties:
    FunctionName: !GetAtt function.Arn
    Action: lambda:InvokeFunction
    Principal: "*"
    SourceAccount: !Ref "AWS::AccountId"
    SourceArn: !GetAtt bucket.Arn