계: Input Validation and Representation

입력 검증 및 표현 문제는 메타 문자, 대체 인코딩 및 숫자 표현 때문에 발생합니다. 보안 문제는 입력을 신뢰하기 때문에 발생합니다. 문제로는 "Buffer Overflows", "Cross-Site Scripting" 공격, "SQL Injection", 그 외 여러 가지가 있습니다.

Spring Beans Injection

Java/JSP

Abstract

사용자 제어 Bean 정의 리소스를 로드하면 공격자가 서버에서 임의 코드를 실행하거나, 응용 프로그램 로직을 남용하거나, DoS(Denial of Service)를 유발할 수 있습니다.

Explanation

Spring은 개발자가 로컬 파일 및 원격 URL을 포함한 여러 리소스에서 Bean 정의를 로드할 수 있도록 합니다. 공격자가 Bean 정의 리소스의 내용을 제어할 수 있으면 공격자가 초기화 중 임의 코드를 실행할 수 있는 악의적인 Bean 정의를 삽입할 수 있습니다.

예제: 다음 예제는 사용자 제어 위치에서 Bean 정의 리소스를 로드합니다.


String beans = getBeanDefinitionFromUser();
GenericApplicationContext ctx = new GenericApplicationContext();
XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(ctx);
xmlReader.loadBeanDefinitions(new UrlResource(beans));
ctx.refresh();

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 94, CWE ID 95

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

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

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

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

[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [11] CWE ID 094

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

[8] Standards Mapping - FIPS200 SI

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

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

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

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.2.4 Sanitization and Sandboxing Requirements (L1 L2 L3), 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)

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

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

[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws

[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws

[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 6.5.6

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2

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

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

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

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

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

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

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

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

[31] 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

[32] 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

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

[34] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3570 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3570 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3570 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3570 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3570 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3570 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3570 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 4.1 APSC-DV-002560 CAT I

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

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

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

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

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

desc.dataflow.java.spring_beans_injection