界: Time and State

分散式運算與時間和狀態相關。也就是說，為了使多個元件進行通訊，必須共用狀態，並且這一切都需要時間。

大多數的程式設計師將他們的工作擬人化。他們想採用一種控制執行緒來執行整個程式，就像他們必須自己完成這項工作一樣。但是，現代的電腦可以非常快速地切換工作，並且在多核心多 CPU 或分散式系統中，兩個事件可能恰好同時發生。瑕疵急於填補程式設計師在程式執行模型與實際情況之間的差距。這些瑕疵與執行緒、處理序、時間和資訊之間的意外互動有關。這些互動透過共用狀態發生：信號、變數、檔案系統，以及基本上任何可以儲存資訊的項目。

Race Condition: App Download

Java/JSP

Abstract

應用程式會從共用儲存區安裝應用程式，允許惡意應用程式取代要安裝的套件。

Explanation

應用程式會從共用儲存區安裝應用程式，任何具有外部儲存區讀取/寫入權限的應用程式都可以寫入該儲存區。由於競爭情形，監控資料夾的惡意應用程式可針對替代 APK 檔案交換已下載的 APK 檔案，其中將使用安裝程序而非合法更新。

範例 1： 下列程式碼會從共用儲存區安裝應用程式：


    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "app.apk")), "application/vnd.android.package-archive");
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);

References

[1] Standards Mapping - CIS Azure Kubernetes Service Benchmark 1

[2] Standards Mapping - CIS Microsoft Azure Foundations Benchmark complete

[3] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 2

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

[5] Standards Mapping - CIS Google Kubernetes Engine Benchmark integrity

[6] Standards Mapping - CIS Kubernetes Benchmark partial

[7] Standards Mapping - Common Weakness Enumeration CWE ID 362, CWE ID 367

[8] Standards Mapping - Common Weakness Enumeration Top 25 2022 [22] CWE ID 362

[9] Standards Mapping - Common Weakness Enumeration Top 25 2023 [21] CWE ID 362

[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-003178

[11] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data

[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3

[13] Standards Mapping - OWASP Top 10 2021 A04 Insecure Design

[14] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.11.2 Business Logic Architectural Requirements (L2 L3), 1.11.3 Business Logic Architectural Requirements (L3), 11.1.6 Business Logic Security Requirements (L2 L3)

[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-RESILIENCE-2

[16] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6

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

[21] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection

[22] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.3 - Terminal Software Attack Mitigation

[23] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.3 - Terminal Software Attack Mitigation

[24] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 362

[25] Standards Mapping - SANS Top 25 2010 Insecure Interaction - CWE ID 362

[26] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3630.1 CAT II

[27] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3630.1 CAT II

[28] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3630.1 CAT II

[29] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3630.1 CAT II

[30] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3630.1 CAT II

[31] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3630.1 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3630.1 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001995 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001995 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001995 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001995 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001995 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001995 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001995 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001995 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001995 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001995 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001995 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001995 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001995 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001995 CAT II

desc.dataflow.java.race_condition_app_download