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。

Setting Manipulation: User-Controlled Allow List

Abstract
應用程式可讓使用者定義允許清單,這可能會為其提供將惡意輸入標記為安全的功能。
Explanation
架構通常具備允許清單供驗證,以防止出現弱點。

範例 1:以下內容可讓惡意使用者設定供 AngularJS 使用的允許清單,以判定影像可擷取哪些類型的連結。

myModule.config(function($compileProvider){
$compileProvider.imgSrcSanitizationWhitelist(userInput);
});


這可能看似不錯,但如果使用者將規則運算式設定為 /^(http(s)?|javascript):.*/,則應用程式將允許在影像來源 URL 中使用內嵌 JavaScript,這可能會導致 Cross-site scripting 攻擊。
其他允許清單實例可能會防止所有不同類型的攻擊,尤其是插入式攻擊,例如跨網站指令碼、command injection、SQL injection 以及業務邏輯漏洞。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 15
[2] Standards Mapping - Common Weakness Enumeration Top 25 2024 [12] CWE ID 020
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Mobile 2014 M8 Security Decisions Via Untrusted Inputs
[8] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[9] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input
[10] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[11] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1
[12] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1
[13] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[14] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[15] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[19] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[20] 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
[21] 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
[22] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[23] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[24] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[25] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[26] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[27] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[28] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[29] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[44] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.javascript.setting_manipulation_user_controlled_allow_list