界: Encapsulation

封装即绘制强边界。在 Web 浏览器中，这可能意味着确保您的移动代码不会被其他移动代码滥用。在服务器上，这可能意味着区分已验证数据和未验证数据、区分一个用户的数据和另一个用户的数据，或者区分允许用户查看的数据和不允许用户查看的数据。

Insecure IPC: Missing Content Validation

Objective-C
Swift

Abstract

扩展视图控制器未能验证主机应用程序发出的数据。

Explanation

该扩展在视图控制器中接收来自主机应用程序的数据，但未能实现 SLComposeServiceViewController isContentValid 以在使用收到的不可信数据前进行验证。

示例 1：以下扩展视图控制器从主机应用程序接收数据，但未能实现回调方法来验证这些数据：


    #import <MobileCoreServices/MobileCoreServices.h>

    @interface ShareViewController : SLComposeServiceViewController
        ...
    @end

    @interface ShareViewController ()
        ...
    @end

    @implementation ShareViewController

    - (void)didSelectPost {
        NSExtensionItem *item = self.extensionContext.inputItems.firstObject;
        NSItemProvider *itemProvider = item.attachments.firstObject;
        ...
        // Use the received items
        ...
        [self.extensionContext completeRequestReturningItems:@[] completionHandler:nil];
    }

    ...

    @end

References

[1] David Thiel iOS Application Security: The Definitive Guide for Hackers and Developers No Starch Press

[2] SLComposeServiceViewController Apple

[3] Standards Mapping - CIS Azure Kubernetes Service Benchmark 4

[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 normal

[7] Standards Mapping - Common Weakness Enumeration CWE ID 501

[8] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001084, CCI-002754

[9] Standards Mapping - FIPS200 SI

[10] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data

[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)

[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation

[13] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input

[14] Standards Mapping - OWASP Top 10 2021 A04 Insecure Design

[15] Standards Mapping - OWASP Mobile 2014 M8 Security Decisions Via Untrusted Inputs

[16] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation

[17] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-PLATFORM-1

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1

[20] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I

[21] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I

[22] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I

[23] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I

[24] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I

[25] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I

[26] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I

[27] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[28] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[29] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[30] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[31] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[32] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[33] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[34] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002360 CAT II, APSC-DV-002560 CAT I

[41] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)

desc.structural.objc.insecure_ipc_missing_content_validation

Abstract

扩展视图控制器未能验证主机应用程序发出的数据。

Explanation

该扩展在视图控制器中接收来自主机应用程序的数据，但未能实现 SLComposeServiceViewController isContentValid 以在使用收到的不可信数据前进行验证。

示例 1：以下扩展视图控制器从主机应用程序接收数据，但未能实现 SLComposeServiceViewController isContentValid 回调方法来验证这些数据：


    import MobileCoreServices

    class ShareViewController: SLComposeServiceViewController {
        
        ... 

        override func didSelectPost() {
            let extensionItem = extensionContext?.inputItems.first as! NSExtensionItem
            let itemProvider = extensionItem.attachments?.first as! NSItemProvider
            ...
            // Use the received items
            ...
            self.extensionContext?.completeRequestReturningItems([], completionHandler:nil)
        }

        ...
    }