Reino: Security Features

Segurança de software não é o mesmo que software de segurança. Aqui, estamos interessados em tópicos como autenticação, controle de acesso, confidencialidade, criptografia e gestão de privilégios.

Privacy Violation: iCloud Synchronized Credentials

Objective-C
Swift

Abstract

O método identificado inicializa uma nova NSURLCredential sincronizável, que será distribuída para todos os dispositivos sincronizados e armazenada no ambiente do iCloud da Apple.

Explanation

Ao criar uma instância de NSURLCredential que contém as credenciais do usuário na forma, em um par de nome do usuário/senha ou em um certificado de cliente, um atributo de persistência precisa ser definido. Os valores possíveis são:

- NSURLCredentialPersistenceNone: A credencial não deve ser armazenada.
- NSURLCredentialPersistenceForSession: A credencial deve ser armazenada somente para esta sessão.
- NSURLCredentialPersistencePermanent: A credencial deve ser armazenada no conjunto de chaves.
- NSURLCredentialPersistenceSynchronizable: A credencial deve ser armazenada permanentemente no conjunto de chaves e, além disso, deve ser distribuída para outros dispositivos, com base na Apple ID do proprietário.

O atributo NSURLCredentialPersistenceSynchronizable implica na distribuição da credencial e de seu armazenamento no ambiente de nuvem da Apple. Dependendo dos requisitos de privacidade do aplicativo, armazenar a credencial no ambiente de nuvem da Apple pode não ser aceitável.

Exemplo 1: O seguinte trecho de código cria uma credencial sincronizável que será distribuída para outros dispositivos e o iCloud:


    ...
    NSURLCredential *credential = [NSURLCredential credentialWithUser:user password:password persistence:NSURLCredentialPersistenceSynchronizable]; 
    NSURLCredentialStorage *shared = [NSURLCredentialStorage sharedCredentialStorage];
    [shared setDefaultCredential:credential forProtectionSpace:protectionSpace]; 
    ...

References

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

[2] Standards Mapping - Common Weakness Enumeration CWE ID 359

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

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

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

[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [17] CWE ID 200

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

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

[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-4 Information Flow Enforcement (P1), SC-28 Protection of Information at Rest (P1)

[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-4 Information Flow Enforcement, SC-28 Protection of Information at Rest

[11] Standards Mapping - OWASP API 2023 API3 Broken Object Property Level Authorization

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 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)

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

[14] Standards Mapping - OWASP Mobile 2024 M6 Inadequate Privacy Controls

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

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

[17] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling

[18] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure

[19] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure

[20] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.6, Requirement 8.4

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.4

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.3.1, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.1, Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1

[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I

[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I

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

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

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

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

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

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

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

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

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

[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002340 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002340 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002340 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002340 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002340 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002340 CAT II

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

[56] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage

desc.structural.objc.privacy_violation_icloud_synchronized_credentials

Abstract

O método identificado inicializa uma nova NSURLCredential sincronizável, que será distribuída para todos os dispositivos sincronizados e armazenada no ambiente do iCloud da Apple.

Explanation


    ...
    let credential = NSURLCredential(user:foo, password:password, persistence:.Synchronizable) 
    let shared = NSURLCredentialStorage.sharedCredentialStorage()
    shared.setCredential(credential, forProtectionSpace:protectionSpace)
    ...