界: Encapsulation

封裝是要劃定清楚的界限。在網頁瀏覽器中，這可能意味著確保您的行動程式碼不會被其他行動程式碼濫用。在伺服器上，這可能意味著區分經過驗證的資料與未經驗證的資料、區分一個使用者的資料與另一個使用者的資料，或區分允許使用者查看的資料與不允許查看的資料。

Silverlight Misconfiguration: Overly Permissive Cross-Domain Policy

C#/VB.NET/ASP.NET

Abstract

服務主機上的組態設定檔案定義一個過度允許的跨網域原則。

Explanation

依預設，Silverlight 應用程式需遵守相同來源策略 (Same-Origin Policy)，它可以確保只有在 Silverlight 應用程式來自相同網域時，才可以存取一項服務上的資料。Silverlight 允許開發人員透過主機上的 clientaccesspolicy.xml 組態設定檔案中的適當設定來修改策略。但是，變更設定時應特別小心，因為過度允許的跨網域策略會允許惡意應用程式以不適當的方式與受害者服務通訊，導致欺騙、資料遭竊取、傳遞和其他攻擊。

範例 1：以下配置顯示了 clientaccesspolicy.xml 使用萬用字元指定允許服務與哪些網域通訊。


<allow-from http-request-headers="*">
	<domain uri="*"/>
</allow-from>

使用 * 做為 domain 元素的 uri 屬性值，表示任何網域上的應用程式都可以連線至服務。

References

[1] URL Access Restrictions in Silverlight

[2] Network Security Access Restrictions in Silverlight

[3] HTTP Communication and Security with Silverlight: Cross-Domain Communication

[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001368, CCI-001414

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

[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-4 Information Flow Enforcement (P1)

[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-4 Information Flow Enforcement

[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[9] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls

[10] Standards Mapping - OWASP Mobile 2024 M8 Security Misconfiguration

[11] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration

[12] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration

[13] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

[14] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10

[15] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8

[16] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

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

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

[21] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control

[22] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control

[23] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.4 - Authentication and Access Control, Control Objective C.2.3 - Web Software Access Controls

[24] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[25] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[26] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[27] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[28] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[29] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[30] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[31] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000480 CAT II, APSC-DV-000490 CAT II

[39] Standards Mapping - Web Application Security Consortium Version 2.00 Application Misconfiguration (WASC-15)

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