界: API Abuse
API 是调用方和被调用方之间的约定。最常见的 API 滥用是由于调用方未能遵守此约定的终止导致的。例如，如果某个程序在调用 chroot() 后未能调用 chdir()，则违反了用于指定如何安全地更改活动根目录的约定。库滥用的另一个典型示例是期望被调用方向调用方返回可信的 DNS 信息。在这种情况下，调用方通过对被调用方行为做出某种假设（返回值可用于身份验证目的）滥用其 API。另一方也可能违反调用方-被调用方约定。例如，如果编码器子类化 SecureRandom 并返回一个非随机值，则将违反此约定。
ASP.NET MVC Bad Practices: Optional Submodel With Required Property
Abstract
模型类有一个要求的属性，其类型为父模型类的一个可选成员，因此可能会受发布中攻击的影响。
Explanation
如果模型类有要求的属性，并且类型为父模型类的一个可选成员，如果攻击者传送的请求中包含的数据少于预期，可能会受发布中攻击的影响。
ASP.NET MVC 框架将尝试绑定要求参数到模型属性，包括子模型。
如果子模型可选 -- 也就是说，父模型有属性而没有
考虑以下模型类定义：
如果攻击者没有传送针对
ASP.NET MVC 框架将尝试绑定要求参数到模型属性，包括子模型。
如果子模型可选 -- 也就是说，父模型有属性而没有
[Required] 属性 -- 如果攻击者没有传送子模型，那么父模型将有一个 null 值并且子模型要求的字段将不会由模型验证声明。这是发布中攻击的一种表单。考虑以下模型类定义：
public class ChildModel
{
public ChildModel()
{
}
[Required]
public String RequiredProperty { get; set; }
}
public class ParentModel
{
public ParentModel()
{
}
public ChildModel Child { get; set; }
}
如果攻击者没有传送针对
ParentModel.Child 属性的值，那么 ChildModel.RequiredProperty 属性将有一个未声明的 [Required]。这可能产生无法预期和不良后果。References
[1] Input Validation vs. Model Validation in ASP.NET MVC
[2] Standards Mapping - CIS Azure Kubernetes Service Benchmark 3
[3] Standards Mapping - CIS Microsoft Azure Foundations Benchmark complete
[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4
[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 3
[6] Standards Mapping - CIS Google Kubernetes Engine Benchmark integrity
[7] Standards Mapping - CIS Kubernetes Benchmark partial
[8] Standards Mapping - Common Weakness Enumeration CWE ID 345
[9] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002422
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-8 Transmission Confidentiality and Integrity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-8 Transmission Confidentiality and Integrity
[12] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input
[13] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[14] Standards Mapping - OWASP Top 10 2010 A1 Injection
[15] Standards Mapping - OWASP Top 10 2013 A1 Injection
[16] Standards Mapping - OWASP Top 10 2017 A1 Injection
[17] Standards Mapping - OWASP Top 10 2021 A03 Injection
[18] Standards Mapping - OWASP API 2023 API3 Broken Object Property Level Authorization
[19] Standards Mapping - OWASP Application Security Verification Standard 4.0 3.5.3 Token-based Session Management (L2 L3), 13.2.6 RESTful Web Service Verification Requirements (L2 L3)
[20] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002470 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002470 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002470 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002470 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002470 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002470 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002470 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002470 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002470 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002470 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002470 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002470 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002470 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002470 CAT II
[36] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.structural.dotnet.aspnet_mvc_bad_practices_optional_submodel_with_required_property