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。

Biometric Authentication: Insufficient Touch ID Protection

Objective-C
Swift

Abstract

该应用程序使用 Touch ID 在密钥链中存储了一个项目，但未能将有效指纹限制为存储密钥链项目时可用的指纹。

Explanation

基于 Touch ID 的身份验证可以使用密钥链服务实现，即在密钥链中存储项目，并设置一项访问控制来要求用户需在日后使用其指纹检索该项目。以下策略可用于定义如何使用其指纹对用户进行验证：

- kSecAccessControlUserPresence：限制为通过 Touch ID 或密码访问。不要求 Touch ID 可用或已注册。添加或删除指纹后，仍可通过 Touch ID 访问项目。
- kSecAccessControlTouchIDAny：限制为通过 Touch ID 使用任何已注册的指纹访问。添加或删除指纹后，项目不会失效。
- kSecAccessControlTouchIDCurrentSet：限制为通过 Touch ID 使用当前已注册的指纹访问。添加或删除指纹后，项目将会失效。

使用 Touch ID 时，应使用 kSecAccessControlTouchIDCurrentSet 属性阻止以后添加指纹或删除现有指纹。

示例 1：以下代码使用 kSecAccessControlTouchIDAny 限制，该项限制允许任何以后注册的指纹对密钥链项目解除锁定：


    ...
    SecAccessControlRef sacRef = SecAccessControlCreateWithFlags(kCFAllocatorDefault,
                 kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly,
                 kSecAccessControlTouchIDCurrentSet, 
                 nil);
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    [dict setObject:(__bridge id)kSecClassGenericPassword forKey:(__bridge id) kSecClass];
    [dict setObject:account forKey:(__bridge id)kSecAttrAccount];
    [dict setObject:service forKey:(__bridge id) kSecAttrService];
    [dict setObject:token forKey:(__bridge id)kSecValueData];
    ...
    [dict setObject:sacRef forKey:(__bridge id)kSecAttrAccessControl];
    [dict setObject:@"Please authenticate using the Touch ID sensor." forKey:(__bridge id)kSecUseOperationPrompt];

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        OSStatus status = SecItemAdd((__bridge CFDictionaryRef)dict, nil);
    });
    ...

References

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

[2] Integrating Touch ID Into Your iOS Applications Cigital

[3] Don't Touch Me That Way nVisium

[4] SecAccessControlCreateFlags Apple

[5] Standards Mapping - Common Weakness Enumeration CWE ID 287

[6] Standards Mapping - Common Weakness Enumeration Top 25 2019 [13] CWE ID 287

[7] Standards Mapping - Common Weakness Enumeration Top 25 2020 [14] CWE ID 287

[8] Standards Mapping - Common Weakness Enumeration Top 25 2021 [14] CWE ID 287

[9] Standards Mapping - Common Weakness Enumeration Top 25 2022 [14] CWE ID 287

[10] Standards Mapping - Common Weakness Enumeration Top 25 2023 [13] CWE ID 287

[11] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001958

[12] Standards Mapping - FIPS200 CM, SC

[13] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation

[14] Standards Mapping - NIST Special Publication 800-53 Revision 4 IA-3 Device Identification and Authentication (P1)

[15] Standards Mapping - NIST Special Publication 800-53 Revision 5 IA-3 Device Identification and Authentication

[16] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.7.1 Out of Band Verifier Requirements (L1 L2 L3), 2.7.2 Out of Band Verifier Requirements (L1 L2 L3), 2.7.3 Out of Band Verifier Requirements (L1 L2 L3), 2.8.4 Single or Multi Factor One Time Verifier Requirements (L2 L3), 2.8.5 Single or Multi Factor One Time Verifier Requirements (L2 L3), 3.7.1 Defenses Against Session Management Exploits (L1 L2 L3), 9.2.3 Server Communications Security Requirements (L2 L3)

[17] Standards Mapping - OWASP Mobile 2014 M5 Poor Authorization and Authentication

[18] Standards Mapping - OWASP Mobile 2024 M3 Insecure Authentication/Authorization

[19] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-AUTH-1, MASVS-AUTH-2

[20] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management

[21] Standards Mapping - OWASP Top 10 2007 A9 Insecure Communications

[22] Standards Mapping - OWASP Top 10 2010 A9 Insufficient Transport Layer Protection

[23] Standards Mapping - OWASP Top 10 2021 A07 Identification and Authentication Failures

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 4.1, Requirement 6.5.10

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 4.1, Requirement 6.3.1.4, Requirement 6.5.9

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 4.1, Requirement 6.5.4

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 4.1, Requirement 6.5.4

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 4.1, Requirement 6.5.4

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 4.1, Requirement 6.5.4

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 4.1, Requirement 6.5.4

[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 4.2.1, Requirement 6.2.4

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.3 - Authentication and Access Control

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.3 - Authentication and Access Control

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.3 - Authentication and Access Control, Control Objective C.2.1.2 - Web Software Access Controls

[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 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001650 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001650 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001650 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001650 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001650 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001650 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001650 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001650 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001650 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001650 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001650 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001650 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001650 CAT II

[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001650 CAT II

[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001650 CAT II

[59] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authentication (WASC-01)

[60] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authentication

desc.dataflow.objc.biometric_authentication_insufficient_touch_id_protection

Abstract

该应用程序使用 Touch ID 在密钥链中存储了一个项目，但未能将有效指纹限制为存储密钥链项目时可用的指纹。

Explanation


    ...
    let flags = SecAccessControlCreateWithFlags(kCFAllocatorDefault,
        kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly,
        .TouchIDAny, 
        nil)

    var query = [String : AnyObject]()
    query[kSecClass as String] = kSecClassGenericPassword
    query[kSecAttrService as String] = service as AnyObject?
    query[kSecAttrAccount as String] = account as AnyObject?
    query[kSecValueData as String] = secret as AnyObject?
    ...
    query[kSecAttrAccessControl as String] = sacRef
    query[kSecUseOperationPrompt as String] = "Please authenticate using the Touch ID sensor."

    SecItemAdd(query as CFDictionary, nil)
    ...