界: Environment

本節包括原始程式碼之外的所有內容，但對於建立中產品的安全性仍至關重要。由於此領域所涵蓋的問題與原始程式碼沒有直接關係，因此我們將其與其他領域分開。

J2EE Misconfiguration: Invalid Servlet Name

Abstract
無效的 Servlet 名稱可能會造成無法合法存取預定的 Servlet。
Explanation
web.xml 中，沒有 Servlet 名稱或是有相同的 Servlet 名稱，視為錯誤。每個 Servlet 應該擁有專屬名稱 (servlet-name ) 以及相符的對應 (servlet-mapping)。

範例 1：以下 web.xml 中的項目顯示了數個錯誤 Servlet 定義。

<!-- No <servlet-name> specified: -->
    <servlet>
        <servlet-class>com.class.MyServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

<!-- Empty <servlet-name> node: -->
    <servlet>
        <servlet-name/>
        <servlet-class>com.class.MyServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

<!-- Duplicate <servlet-name> nodes: -->
    <servlet>
        <servlet-name>MyServlet</servlet-name>
        <servlet-name>Servlet</servlet-name>
        <servlet-class>com.class.MyServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

這些錯誤可能會造成意外拒絕存取 Servlet。
References
[1] Sun Microsystems, Inc. Java Servlet Specification 2.4
[2] Standards Mapping - Common Weakness Enumeration CWE ID 684
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094
[4] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1)
[5] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection
[6] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[7] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[8] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[9] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[10] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[11] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[12] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[13] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[14] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002400 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002400 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002400 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002400 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002400 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002400 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002400 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002400 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002400 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002400 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002400 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002400 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002400 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002400 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002400 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002400 CAT II
[36] Standards Mapping - Web Application Security Consortium Version 2.00 Denial of Service (WASC-10)
[37] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.config.java.j2ee_misconfiguration_invalid_servlet_name