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취약점

.NET Bad Practices: BinaryFormatter Enabled

C#/VB.NET/ASP.NET
JSON

Abstract

이 응용 프로그램은 더 이상 사용되지 않고 안전하지 않은 BinaryFormatter 클래스를 활성화합니다.

Explanation

.NET에서는 BinaryFormatter 클래스를 사용하여 개체를 개체 자체와 역직렬화 중 이를 재구성하는 데 필요한 메타데이터를 모두 포함하는 바이너리 스트림으로 변환할 수 있습니다.

BinaryFormatter 클래스를 사용하면 공격자가 임의의 코드를 실행하고 응용 프로그램 논리를 남용하거나 서비스 거부(DoS) 조건을 트리거할 수 있는 안전하지 않은 역직렬화 시나리오로 이어질 수 있습니다.

BinaryFormatter 유형 사용은 위험하며 안전하게 보호할 수 없으므로 데이터 처리에 사용하지 않는 것이 좋습니다.

예제 1: 이 응용 프로그램은 runtimeConfig.json 파일의 config 속성 EnableUnsafeBinaryFormatterSerialization을 true로 설정하여 안전하지 않은 BinaryFormatter 클래스의 사용을 활성화합니다.


...
AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", true);
...

References

[1] Microsoft BinaryFormatter serialization methods are obsolete and prohibited in ASP.NET apps

[2] Microsoft Deserialization risks in use of BinaryFormatter and related types

[3] Standards Mapping - Common Weakness Enumeration CWE ID 470, CWE ID 494

[4] Standards Mapping - Common Weakness Enumeration Top 25 2024 [12] CWE ID 020

[5] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001764, CCI-001774, CCI-002754

[6] Standards Mapping - FIPS200 SI

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

[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3

[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3

[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1

[11] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3

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

[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-7 Least Functionality, SI-10 Information Input Validation

[14] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)

[15] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection

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

[17] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4

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

[19] Standards Mapping - OWASP Top 10 2007 A4 Insecure Direct Object Reference

[20] Standards Mapping - OWASP Top 10 2010 A4 Insecure Direct Object References

[21] Standards Mapping - OWASP Top 10 2013 A4 Insecure Direct Object References

[22] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control

[23] Standards Mapping - OWASP Top 10 2021 A03 Injection

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

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.4

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

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

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

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation

[35] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.2.3 - Web Software Access Controls, Control Objective C.3.2 - Web Software Attack Mitigation, Control Objective C.3.5 - Web Software Attack Mitigation

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

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

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

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

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

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

[42] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3570 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[45] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[46] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[47] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[48] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[49] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[50] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[51] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[52] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[53] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[54] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[55] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[56] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

[57] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

[58] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

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

desc.semantic.dotnet.dotnet_bad_practices_binaryformatter_enabled

Abstract

이 응용 프로그램은 더 이상 사용되지 않고 안전하지 않은 BinaryFormatter 클래스를 활성화합니다.

Explanation

.NET에서는 BinaryFormatter 클래스를 사용하여 개체를 개체 자체와 역직렬화 중 이를 재구성하는 데 필요한 메타데이터를 모두 포함하는 바이너리 스트림으로 변환할 수 있습니다.

BinaryFormatter 클래스를 사용하면 공격자가 임의의 코드를 실행하고 응용 프로그램 논리를 남용하거나 서비스 거부(DoS) 조건을 트리거할 수 있는 안전하지 않은 역직렬화 시나리오로 이어질 수 있습니다.

BinaryFormatter 클래스 사용은 위험하며 안전하게 보호할 수 없으므로 데이터 처리에 사용하지 않는 것이 좋습니다.

예제 1: 이 응용 프로그램은 runtimeConfig.json 파일의 config 속성 EnableUnsafeBinaryFormatterSerialization을 true로 설정하여 안전하지 않은 BinaryFormatter 클래스의 사용을 활성화합니다.


{
    "configProperties": {
        "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": true
    }
}