Reino: Security Features

La seguridad de un software no es un software de seguridad. Nos preocupamos de cuestiones como la autenticación, el control de acceso, la confidencialidad, la criptografía y la gestión de privilegios.

Privacy Violation: Sensitive Data Accessible From iTunes

Objective-C
Swift

Abstract

El método identificado escribe datos confidenciales en el directorio público Documents sin enmascararlos correctamente primero.

Explanation

El objetivo del directorio Documents es almacenar datos de aplicaciones no transitorios, como el contenido creado por el usuario o información local que le permite a la aplicación ejecutarse en modo sin conexión. Si se establece UIFileSharingEnabled en el archivo Info.plist de su aplicación, se podrá acceder a los archivos de esta ubicación a través de iTunes. Cuando se escriben datos confidenciales en el directorio Documents, es posible que los datos queden expuestos en las copias de seguridad no cifradas o a través de la interfaz de iTunes.

Ejemplo 1: el siguiente fragmento de código escribe la contraseña del usuario en texto sin cifrar dentro del directorio Documents:


    ...
    NSString *docsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString *passwd_path = [docsDirectory stringByAppendingPathComponent:@"passwords.txt"];

    NSString *password = [user password];
    [password writeToFile:passwd_path atomically:YES encoding:NSUTF8StringEncoding error:nil];
    ...

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 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)

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

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

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

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

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

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

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

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

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

[21] 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

[22] 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

[23] 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

[24] 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

[25] 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

[26] 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

[27] 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

[28] 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

[29] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 3.6 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[30] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 3.6 - 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 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 3.6 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

desc.dataflow.objc.privacy_violation_sensitive_data_accessible_from_itunes

Abstract

El método identificado escribe datos confidenciales en el directorio público Documents sin enmascararlos correctamente primero.

Explanation


    let documents = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
    let passwd_path = NSURL(fileURLWithPath: documents).URLByAppendingPathComponent("secret.txt")
    let password = getUserPassword()
    try password.writeToURL(passwd_path, atomically:true, encoding: NSUTF8StringEncoding)