界: Input Validation and Representation

入力の検証や表現の問題は、メタキャラクター、代替エンコーディング、数値表現などによって引き起こされます。セキュリティの問題は、入力を信頼することに起因します。この問題に含まれるのは、「Buffer Overflow」、「Cross-Site Scripting」攻撃、「SQL Injection」などです。

Frame Spoofing

Apex

Abstract

ユーザー指定のデータを apex:iframe のソース URL として受け入れると、悪意のあるコンテンツが Visualforce ページにロードされることがあります。

Explanation

フレーム偽装の脆弱性は、次の場合に発生します。

1. 信頼できないソース経由でデータが Web アプリケーションに入り込んだ場合。

2. データが検証なしで iframe URL として使用される場合。

この方法の場合、攻撃者はインラインフレームにレンダリングする内容を制御できることがあります。フィッシング攻撃者は悪意のあるサイトを示すようにフレーム URL を変更することで、認証情報やその他の機密データを含むユーザー情報を盗もうとすることがあります。ベースドメイン (Salesforce.com) が信頼できる場合、攻撃対象者はページを信頼して、要求されたすべての情報を提供します。

例 1: 次のコード例では、iframesrc URL パラメーターは apex:iframe のターゲット URL として直接使用されています。


<apex:page>
<apex:iframe src="{!$CurrentPage.parameters.iframesrc}"></apex:iframe>
</apex:page>

この方法では、攻撃者が対象者に悪意のある Web サイトに設定された iframesrc パラメーターを提供した場合、悪意のある Web サイトのコンテンツを使用してフレームがレンダリングされます。


<iframe src="http://evildomain.com/">

References

[1] Ryan C. Barnett Content Spoofing - TechTarget

[2] Salesforce Developers Technical Library Secure Coding Guidelines

[3] Standards Mapping - CIS Azure Kubernetes Service Benchmark 3.5

[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4.0

[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 3

[6] Standards Mapping - CIS Google Cloud Computing Platform Benchmark complete

[7] Standards Mapping - CIS Google Kubernetes Engine Benchmark availability

[8] Standards Mapping - Common Weakness Enumeration CWE ID 601

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

[10] Standards Mapping - FIPS200 SI

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

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

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

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

[15] Standards Mapping - OWASP Top 10 2010 A10 Unvalidated Redirects and Forwards

[16] Standards Mapping - OWASP Top 10 2013 A10 Unvalidated Redirects and Forwards

[17] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.1.5 Input Validation Requirements (L1 L2 L3)

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

[19] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation

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

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1

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

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

[29] 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

[30] 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

[31] Standards Mapping - SANS Top 25 2010 Insecure Interaction - CWE ID 601

[32] Standards Mapping - SANS Top 25 2011 Insecure Interaction - CWE ID 601

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[54] Standards Mapping - Web Application Security Consortium Version 2.00 URL Redirector Abuse (WASC-38)

[55] Standards Mapping - Web Application Security Consortium 24 + 2 Content Spoofing

desc.dataflow.apex.frame_spoofing