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.

Android Bad Practices: Use of Released SQLite Resource

Abstract
코드는 미리 릴리스한 후 Android 데이터베이스 처리기를 참조합니다.
Explanation
코드는 미리 닫고 난 후 Android SQLite 데이터베이스 처리기를 사용하려고 합니다. 데이터베이스 연결을 다시 설정하지 않은 처리기에 대한 자세한 참조는 예외를 발생시키며, 예외가 발생하지 않은 경우 응용 프로그램 손상을 일으킬 수 있습니다.

예제: 다음 코드는 메모리의 사용자 값을 일시적으로 캐시하는 프로그램에서 나올 수 있지만 flushUpdates()를 호출하여 디스크에 대한 변경 내용을 커밋할 수 있습니다. 메서드는 데이터베이스에 업데이트를 작성한 후 데이터베이스 처리기를 올바르게 닫습니다. 그러나 flushUpdates()가 다시 호출될 경우, 재초기화 전에 데이터베이스 개체를 다시 참조합니다.


public class ReuseDBActivity extends Activity {
private myDBHelper dbHelper;
private SQLiteDatabase db;

@Override
public void onCreate(Bundle state) {
...
db = dbHelper.getWritableDatabase();
...
}
...

private void flushUpdates() {
db.insert(cached_data); // flush cached data
dbHelper.close();
}
...
}
References
[1] Data Storage, Android Developers
[2] Standards Mapping - CIS Azure Kubernetes Service Benchmark 1
[3] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4
[4] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 1
[5] Standards Mapping - CIS Google Kubernetes Engine Benchmark normal
[6] Standards Mapping - Common Weakness Enumeration CWE ID 416
[7] Standards Mapping - Common Weakness Enumeration Top 25 2019 [1] CWE ID 119, [7] CWE ID 416
[8] Standards Mapping - Common Weakness Enumeration Top 25 2020 [5] CWE ID 119, [8] CWE ID 416
[9] Standards Mapping - Common Weakness Enumeration Top 25 2021 [7] CWE ID 416
[10] Standards Mapping - Common Weakness Enumeration Top 25 2022 [7] CWE ID 416
[11] Standards Mapping - Common Weakness Enumeration Top 25 2023 [4] CWE ID 416
[12] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094
[13] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[14] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1)
[15] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection
[16] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[17] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.6
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.6
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.6
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[24] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[27] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002400 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002400 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002400 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002400 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002400 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002400 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002400 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002400 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002400 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002400 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002400 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002400 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002400 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002400 CAT II
[48] Standards Mapping - Web Application Security Consortium Version 2.00 Denial of Service (WASC-10)
[49] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.controlflow.java.android_bad_practices_use_of_released_sqlite_resource