[보안 이슈] Samba 취약점 보안 업데이트 권고

 

□ 개요
 o Samba 소프트웨어에서 발생하는 취약점을 해결한 보안 업데이트를 발표 [1]
 o 낮은 버전 사용자는 취약점을 악용한 해킹 공격에 악용될 수 있으므로, 최신 버전으로 업데이트 권고

□ 설명
 o Samba에서 안전하지 않은 프로토콜 사용이 가능하여 발생하는 암호를 탈취할수 있는 취약점(CVE-2016-2124) [2]
 o Samba에서 발생하는 권한상승 취약점(CVE-2020-25717) [3]
 o Samba AD(Active Directory) DC(Domain Controller)에서 권한검증이 미흡하여 발생하는 권한상승 취약점(CVE-2020-25718, 25719, 25721, 25722) [4][5][6][7]
 o Samba AD(Active Directory) DC(Domain Controller)에서 Use after free로 인해 발생하는 권한상승 취약점(CVE-2021-3738) [8]
 o Samba에서 페이로드에 대한 검증이 미흡하여 발생하는 인증우회 취약점(CVE-2021-23192) [9]

□ 영향받는 제품 및 해결 버전

제품	CVE ID	영향받는 버전	최신 버전
Samba	CVE-2016-2124	3.0.0 ~ 4.15.1	4.15.2 4.14.10 4.13.14
	CVE-2020-25717	3.0 및 이후 버전
	CVE-2020-25718	4.0 및 이후 버전
	CVE-2020-25719
	CVE-2020-25721
	CVE-2020-25722
	CVE-2021-3738
	CVE-2021-23192	4.10.0 및 이후 버전

 ※ 해당 취약점에 영향받는 소프트웨어를 이용 중인 사용자는 업데이트 페이지를 참고하여 업데이트 수행 [1]
 
□ 기타 문의사항
 o 한국인터넷진흥원 사이버민원센터: 국번없이 118
 
[참고사이트]
[1] https://www.samba.org/samba/history/security.html
[2] https://www.samba.org/samba/security/CVE-2016-2124.html
[3] https://www.samba.org/samba/security/CVE-2020-25717.html
[4] https://www.samba.org/samba/security/CVE-2020-25718.html
[5] https://www.samba.org/samba/security/CVE-2020-25719.html
[6] https://www.samba.org/samba/security/CVE-2020-25721.html
[7] https://www.samba.org/samba/security/CVE-2020-25722.html
[8] https://www.samba.org/samba/security/CVE-2021-3738.html
[9] https://www.samba.org/samba/security/CVE-2021-23192.html


□ 작성 : 침해사고분석단 취약점분석팀