계: Encapsulation

캡슐화는 강력한 경계를 그리는 것입니다. 웹 브라우저에서는 사용자의 모바일 코드가 다른 모바일 코드에 의해 오용되지 않도록 하는 것을 의미합니다. 서버에서는 검증된 데이터와 검증되지 않은 데이터, 한 사용자의 데이터와 다른 사용자의 데이터, 데이터 사용자가 볼 수 있는 데이터와 볼 수 없는 데이터 간의 차별화를 의미할 수 있습니다.

Insecure IPC: Missing Content Validation

Abstract
확장 보기 컨트롤러가 호스트 애플리케이션에서 전송된 데이터의 확인에 실패합니다.
Explanation
확장이 호스트 응용 프로그램에서 전송하는 데이터를 자체 보기 컨트롤러에서 수신하는데, 수신된 신뢰할 수 없는 데이터를 사용 전에 확인하기 위한 SLComposeServiceViewController isContentValid의 구현에 실패합니다.

예제 1: 다음의 확장 보기 컨트롤러는 호스트 응용 프로그램에서 데이터를 수신하지만 이를 확인하기 위한 콜백 메서드의 구현에 실패합니다.


#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
확장 보기 컨트롤러가 호스트 애플리케이션에서 전송된 데이터의 확인에 실패합니다.
Explanation
확장이 호스트 응용 프로그램에서 전송하는 데이터를 자체 보기 컨트롤러에서 수신하는데, 수신된 신뢰할 수 없는 데이터를 사용 전에 확인하기 위한 SLComposeServiceViewController isContentValid의 구현에 실패합니다.

예제 1: 다음의 확장 보기 컨트롤러는 호스트 응용 프로그램에서 데이터를 수신하지만 이를 검증하기 위한 SLComposeServiceViewController isContentValid 콜백 메서드를 구현하지 못합니다.


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)
}

...
}
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.swift.insecure_ipc_missing_content_validation