界: Input Validation and Representation

輸入驗證和表示法問題是由中繼字元、替代編碼和數值表示法引起的。信任輸入會導致安全問題。問題包括：「Buffer Overflows」、「Cross-Site Scripting」攻擊、「SQL Injection」及其他許多問題。

Struts 2: Duplicate Action Field Validators

Java/JSP

Abstract

多個 Struts2 欄位驗證器參照使用相同名稱。若有重複的驗證器參照，表示驗證方式不是最新的。

Explanation

ActionClass-validation.xml 中有多個欄位驗證器定義使用相同名稱。相同名稱的重複驗證定義，會導致運作方式不正常。

範例 1：以下項目顯示兩個重複的欄位驗證器定義。


   <field name="emailField">
      <field-validator type="email" short-circuit="true">
          <message>You must enter a value for email.</message>
      </field-validator>
      <field-validator type="email" short-circuit="true">
          <message>Not a valid email.</message>
      </field-validator>
  </field>

維護驗證邏輯，並與應用程式的其他部分保持同步化是非常重要的。未經檢查的輸入是導致目前最糟糕、最常見的軟體安全問題的根源。Cross-site scripting、SQL injection 和 process control 的弱點是由於缺少輸入驗證或輸入驗證不完整而造成的。雖然 J2EE 應用程式在通常情況下不容易因記憶體損壞攻擊而受到影響，但是如果 J2EE 應用程式連接到未執行陣列界限檢查的本地程式碼，攻擊者就能夠在 J2EE 應用程式中利用輸入驗證錯誤發起 Buffer overflow 攻擊。

References

[1] T. Husted et al. Struts in Action: Building Web Applications with the Leading Java Framework Manning Publications

[2] The Struts2 Validation Framework The Apache Foundation

[3] Standards Mapping - Common Weakness Enumeration CWE ID 101

[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754

[5] Standards Mapping - FIPS200 CM

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

[7] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)

[8] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation

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

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

[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management

[12] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration

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

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

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

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

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

[18] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation

[19] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation

[20] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I

[21] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I

[22] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I

[23] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I

[24] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I

[25] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I

[26] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I

[27] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I

[28] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I

[29] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I

[30] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I

[31] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I

[32] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I

[33] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I

[34] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

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

desc.config.java.struts2_duplicate_action_field_validators