CVE-2021-44228
Apache Log4j2 Remote Code Execution Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 10
- EPSS
- 100.0% 백분위 100.0% · 2026.07.17 기준
- CISA KEV
- 등록
- 조치 기한
- 2021.12.24
- 공개일
- 2021.12.10
CISA KEV에 등록된 실제 악용 확인 취약점
Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vuln...
제품 Apache Log4j2
영향 버전 Apache Log4j2 2.0-beta9, < 2.7.0, >= 2.0.1 < 2.3.1, >= 2.4.0 < 2.12.2, >= 2.13.0 < 2.15.0, 2.0, < 2019.1, 2019.1, < 10.4.2, 3.0, 4.0, 4.1, 4.2, 5.0, 5.1, < 2021-12-13, 3.1, 8.5, 8.6, 8.7
수정 버전 Apache Log4j2 2.7.0, 2.3.1, 2.12.2, 2.15.0, 2019.1, 10.4.2, 2021-12-13, 3.8.0.12, 8.6.2j-398, 2021-12-16, 3.5, 4.4.1, 2020, 4.70, 2.30, 5.1, 10.0.13, 3.5.4, 2.1.0, 2021.11_1.162
영향 여부, 우선 대응, 정식 해결과 결과 확인 절차를 요약합니다.
For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.
조치 기한: 2021.12.24Apache Log4j2의 현재 전체 버전이 공식 영향 범위(Apache Log4j2 2.0-beta9, < 2.7.0, >= 2.0.1 < 2.3.1, >= 2.4.0 < 2.12.2, >= 2.13.0 < 2.15.0, 2.0, < 2019.1, 2019.1, < 10.4.2, 3.0, 4.0, 4.1, 4.2, 5.0, 5.1, < 2021-12-13, 3.1, 8.5, 8.6, 8.7)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.
패치 후 같은 명령으로 전체 버전을 다시 확인해 Apache Log4j2 2.7.0, 2.3.1, 2.12.2, 2.15.0, 2019.1, 10.4.2, 2021-12-13, 3.8.0.12, 8.6.2j-398, 2021-12-16, 3.5, 4.4.1, 2020, 4.70, 2.30, 5.1, 10.0.13, 3.5.4, 2.1.0, 2021.11_1.162 기준을 충족하는지 확인합니다. 이어서 명령어·코드 인젝션 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-20, CWE-400, CWE-502, CWE-917
KEV 등록일 2021.12.10
랜섬웨어 캠페인 사용 확인됨
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2021-44228
EPSS 데이터 기준일 2026.07.17