界: API Abuse

API 就像是呼叫者與被呼叫者之間簽訂的規定。最常見的 API 濫用形式是由呼叫者這一當事方未能遵守此規定所造成的。例如，如果程式在呼叫 chroot() 後無法呼叫 chdir()，即違反規範如何以安全方式變更使用中根目錄的規定。程式庫濫用的另一個好例子是期待被呼叫者向呼叫者傳回值得信賴的 DNS 資訊。在這種情況下，呼叫者是透過對其行為做出某些假設 (傳回值可用於驗證目的) 來濫用被呼叫者 API。另一方也可能違反呼叫者與被呼叫者間的規定。例如，如果編碼器衍生出子類別 SecureRandom 並傳回一個非隨機值，則違反了規定。

Often Misused: sun.misc.Unsafe

Java/JSP

Abstract

該應用程式使用 sun.misc.Unsafe 中的函數。此類別中的所有函數本質上使用起來都是不安全的，只能透過反映來存取。

Explanation

sun.misc.Unsafe 類別是用於執行不安全的低階操作，並非設定供開發人員使用。
Unsafe 類別只能使用可信任的程式碼來取得，並且通常是透過反映取得，因為它可以用於破壞系統或手動配置堆積記憶體，如果處理不當，就可能會對系統產生有害影響。為了確保不會出現錯誤，仔細檢查和測試與 sun.misc.Unsafe 相關的所有功能十分重要。

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 676

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

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

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

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

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

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

[8] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

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

[10] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection

[11] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection

[12] Standards Mapping - SANS Top 25 2011 Risky Resource Management - CWE ID 676

[13] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP2060.4 CAT II, APP3590.2 CAT I

[14] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP2060.4 CAT II, APP3590.2 CAT II

[15] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP2060.4 CAT II, APP3590.2 CAT II

[16] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP2060.4 CAT II, APP3590.2 CAT II

[17] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP2060.4 CAT II, APP3590.2 CAT II

[18] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP2060.4 CAT II, APP3590.2 CAT II

[19] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP2060.4 CAT II, APP3590.2 CAT II

desc.structural.java.often_misused_sun_misc_unsafe