Reino: Environment

Esta sección incluye todo lo que está fuera del código fuente pero aun así es importante para la seguridad del producto que se está creando. Dado que todas las cuestiones incluidas en esta sección no están directamente relacionadas con el código fuente, las hemos separado de las demás secciones.

External Content: Content Delivery Network

C#/VB.NET/ASP.NET

Abstract

El uso de una CDN para proporcionar código esencial directamente a los usuarios puede provocar la ejecución de código malintencionado.

Explanation

Al usar una CDN para suministrar contenido JavaScript dependiente de la aplicación, se ofrecen muchas ventajas al proporcionar JavaScript desde el propio servidor de la aplicación. Entre estas ventajas, se incluyen un aumento del rendimiento y un menor mantenimiento del código por parte del propietario de la aplicación. Sin embargo, la aplicación presupone que la CDN proporcionará contenido seguro al explorador. Si un usuario malintencionado pone en peligro una CDN, esta proporcionará código malintencionado al explorador del usuario, que ahora ejecuta código que la aplicación no puede controlar o detectar como malintencionado.

Ejemplo 1: en el siguiente código ASPX se incluye el código de jQuery de Microsoft mediante la referencia a Microsoft CDN:


...
<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript"></script>
...

Ejemplo 2: en el siguiente código ASPX se permite la redirección automática de todas las solicitudes de secuencias de comandos de ASP.NET para Microsoft Ajax CDN:


...
<asp:ScriptManager
   ID="ScriptManager1"
   EnableCdn="true"
   Runat="Server" />
...

En el Example 2, el control ScriptManager configura su página ASPX para que redireccione automáticamente cualquier solicitud de script a la CDN correspondiente.

References

[1] Content Deliver Network and its Regulation The Journal of China Universities of Posts and Telecommunications

[2] Managed Content Security Delivery radware

[3] Standards Mapping - Common Weakness Enumeration CWE ID 94, CWE ID 98

[4] Standards Mapping - Common Weakness Enumeration Top 25 2019 [18] CWE ID 094

[5] Standards Mapping - Common Weakness Enumeration Top 25 2020 [17] CWE ID 094

[6] Standards Mapping - Common Weakness Enumeration Top 25 2022 [25] CWE ID 094

[7] Standards Mapping - Common Weakness Enumeration Top 25 2023 [23] CWE ID 094

[8] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001167

[9] Standards Mapping - FIPS200 SI

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

[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-18 Mobile Code (P2)

[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-18 Mobile Code

[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.2.5 Sanitization and Sandboxing Requirements (L1 L2 L3), 5.2.8 Sanitization and Sandboxing Requirements (L1 L2 L3), 5.3.6 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.9 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 12.3.6 File Execution Requirements (L2 L3), 14.2.4 Dependency (L2 L3)

[14] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection

[15] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input

[16] Standards Mapping - OWASP Top 10 2007 A3 Malicious File Execution

[17] Standards Mapping - OWASP Top 10 2010 A1 Injection

[18] Standards Mapping - OWASP Top 10 2013 A1 Injection

[19] Standards Mapping - OWASP Top 10 2017 A1 Injection

[20] Standards Mapping - OWASP Top 10 2021 A03 Injection

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.3

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8

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

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

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

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

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

[29] Standards Mapping - SANS Top 25 2009 Risky Resource Management - CWE ID 094

[30] Standards Mapping - SANS Top 25 2010 Risky Resource Management - CWE ID 098

[31] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3600 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3600 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3600 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3600 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3600 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3600 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3600 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-003300 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-003300 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-003300 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-003300 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-003300 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-003300 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-003300 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-003300 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-003300 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-003300 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-003300 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-003300 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-003300 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-003300 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-003300 CAT II

[53] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)

desc.semantic.dotnet.external_content_content_delivery_network