보안뉴스 아카이브
긴급도 100/100 심각도 10 · 치명적 악용확률 100.0% CISA KEV · 2021-12-10 랜섬웨어 악용 CWE-20

CVE-2021-44228

CISA 기관 조치 기한: 2021-12-24

Apache Log4j2

Qualys 위협 인텔 · 심각도 5/5 · QID 317114 · Cisco
제로데이 공개 익스플로잇 실제 공격 관측 측면이동 대량 데이터 유출 서비스 거부 패치 없음 악성코드 연계 권한상승 인증 불필요 원격코드실행 랜섬웨어 연계 CISA KEV
  • CVSS Temporal 9.7 (현재 위협 반영)
  • 익스플로잇 성숙도: 기능적 (3/4)
  • 공격 위치: 로컬/인증필요
  • 패치: 없음/우회책
  • 익스플로잇 프레임워크: Core, Metasploit, GitHub
  • 연계 악성코드: Malclass (Trojan); Generic (Trojan); AdWind (Trojan); Disco (Infostealer); CVE-2021-44228 (Exploit); NightSky (Ransomware); TellYouThePass (Ransomware); Conti (Ransomware); Khonsari (Ransomware); AvosLocker (Ransomware)
  • PCI-DSS 관련
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 vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
KEV 필수 조치: 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.

벡터: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

공개 익스플로잇 / PoC

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