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 Storage: Missing Encryption on Stored Private Media

Objective-C
Swift

Abstract

식별된 메서드는 암호화되지 않은 데이터를 iOS의 사진 앨범에 작성합니다.

Explanation

iOS의 사진 앨범에 저장된 파일은 누구나 읽을 수 있고 장치의 모든 응용 프로그램에서 접근할 수 있습니다. 이를 통해 공격자는 모바일 수표에 사용되는 수표의 사진 같은 민감한 사진을 훔칠 수 있습니다.

예제 1: 다음 코드에서는 UIImageWriteToSavedPhotosAlbum을 사용하여 이미지를 사진 앨범에 저장합니다.


- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
	// Access the uncropped image from info dictionary
	UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

  // Save image
  UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

	...
}

References

[1] iOS Security Guide Apple

[2] Standards Mapping - CIS Azure Kubernetes Service Benchmark 4.0

[3] Standards Mapping - CIS Microsoft Azure Foundations Benchmark partial

[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 5.0

[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 4

[6] Standards Mapping - CIS Google Kubernetes Engine Benchmark confidentiality

[7] Standards Mapping - CIS Kubernetes Benchmark complete

[8] Standards Mapping - Common Weakness Enumeration CWE ID 313, CWE ID 359, CWE ID 921

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

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

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

[12] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002475

[13] Standards Mapping - FIPS200 MP

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

[15] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-28 Protection of Information at Rest (P1)

[16] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-28 Protection of Information at Rest

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

[18] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage

[19] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage

[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 A02 Cryptographic Failures

[23] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 6.1.1 Data Classification (L2 L3), 6.1.2 Data Classification (L2 L3), 6.1.3 Data Classification (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 8.1.6 General Data Protection (L3), 8.2.2 Client-side Data Protection (L1 L2 L3), 8.3.4 Sensitive Private Data (L1 L2 L3), 10.2.1 Malicious Code Search (L2 L3)

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

[25] Standards Mapping - OWASP Mobile 2024 M9 Insecure Data Storage

[26] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-STORAGE-1

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3

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

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[35] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 311

[36] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 311

[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 4.1 APSC-DV-002340 CAT II

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

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

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

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

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

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

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

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

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

[54] Standards Mapping - Security Technical Implementation Guide Version 4.11 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-002340 CAT II

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

desc.structural.objc.insecure_storage_missing_encryption_on_stored_private_media

Abstract

식별된 메서드는 암호화되지 않은 데이터를 iOS의 사진 앨범에 작성합니다.

Explanation


func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.contentMode = .ScaleAspectFit
        imageView.image = pickedImage
    }

    // Save image
    UIImageWriteToSavedPhotosAlbum(pickedImage!, self, nil, nil)

    dismissViewControllerAnimated(true, completion: nil)
}