계: Code Quality

코드 품질이 낮으면 예측할 수 없는 동작이 발생합니다. 사용자 입장에서는 사용 편의성이 떨어지는 것으로 나타나는 경우가 많습니다. 공격자에게는 예상치 못한 방법으로 시스템에 부담을 줄 수 있는 기회가 됩니다.

Portability Flaw: File Separator

Abstract
하드코드한 파일 구분 문자는 이식성 문제를 일으킵니다.
Explanation
운영 체제마다 서로 다른 파일 구분 문자를 사용합니다. 예를 들어, Microsoft Windows 시스템은 "\"를 사용하지만 UNIX 시스템은 "/"를 사용합니다. 응용 프로그램을 다른 플랫폼에서 실행해야 할 때, 하드코드한 파일 구분 문자를 사용하면 응용 프로그램 로직이 잘못 실행되어 denial of service가 발생할 수 있습니다.

예제 1: 다음 코드는 하드코드한 파일 구분 문자를 사용하여 파일을 엽니다.


...
var file:File = new File(directoryName + "\\" + fileName);
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 474
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310
[3] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[4] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[5] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6
[6] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6
[7] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[11] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[12] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[13] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[14] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002520 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002520 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002520 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002520 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002520 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002520 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002520 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002520 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002520 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002520 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002520 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002520 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002520 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002520 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002520 CAT II
desc.dataflow.actionscript.portability_flaw_file_separator
Abstract
하드코드한 파일 구분 문자는 이식성 문제를 일으킵니다.
Explanation
운영 체제마다 서로 다른 파일 구분 문자를 사용합니다. 예를 들어, Microsoft Windows 시스템은 "\"를 사용하지만 UNIX 시스템은 "/"를 사용합니다. 응용 프로그램을 다른 플랫폼에서 실행해야 할 때, 하드코드한 파일 구분 문자를 사용하면 응용 프로그램 로직이 잘못 실행되어 denial of service가 발생할 수 있습니다.

예제 1: 다음 코드는 하드코드한 파일 구분 문자를 사용하여 파일을 엽니다.


...
FileStream f = File.Create(directoryName + "\\" + fileName);
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 474
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310
[3] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[4] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[5] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6
[6] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6
[7] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[11] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[12] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[13] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[14] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002520 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002520 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002520 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002520 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002520 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002520 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002520 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002520 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002520 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002520 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002520 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002520 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002520 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002520 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002520 CAT II
desc.dataflow.dotnet.portability_flaw_file_separator
Abstract
하드코드한 파일 구분 문자는 이식성 문제를 일으킵니다.
Explanation
운영 체제마다 서로 다른 파일 구분 문자를 사용합니다. 예를 들어, Microsoft Windows 시스템은 "\"를 사용하지만 UNIX 시스템은 "/"를 사용합니다. 응용 프로그램을 다른 플랫폼에서 실행해야 할 때, 하드코드한 파일 구분 문자를 사용하면 응용 프로그램 로직이 잘못 실행되어 denial of service가 발생할 수 있습니다.

예제 1: 다음 코드는 하드코드한 파일 구분 문자를 사용하여 파일을 엽니다.


...
File file = new File(directoryName + "\\" + fileName);
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 474
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310
[3] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[4] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[5] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6
[6] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6
[7] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[11] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[12] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[13] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[14] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002520 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002520 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002520 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002520 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002520 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002520 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002520 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002520 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002520 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002520 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002520 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002520 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002520 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002520 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002520 CAT II
desc.dataflow.java.portability_flaw_file_separator
Abstract
하드코드한 파일 구분 문자는 이식성 문제를 일으킵니다.
Explanation
운영 체제마다 서로 다른 파일 구분 문자를 사용합니다. 예를 들어, Microsoft Windows 시스템은 "\"를 사용하지만 UNIX 시스템은 "/"를 사용합니다. 응용 프로그램을 다른 플랫폼에서 실행해야 할 때, 하드코드한 파일 구분 문자를 사용하면 응용 프로그램 로직이 잘못 실행되어 denial of service가 발생할 수 있습니다.

예제 1: 다음 코드는 하드코드한 파일 구분 문자를 사용하여 파일을 엽니다.


...
os.open(directoryName + "\\" + fileName);
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 474
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310
[3] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[4] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[5] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6
[6] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6
[7] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[11] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[12] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[13] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[14] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002520 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002520 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002520 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002520 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002520 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002520 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002520 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002520 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002520 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002520 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002520 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002520 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002520 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002520 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002520 CAT II
desc.dataflow.python.portability_flaw_file_separator