1. 내용
음수 idmap 캐시 항목으로 인해 Samba 파일 서버 프로세스 토큰에서 잘못된 그룹 항목이 발생할 수 있는 문제(CVE-2021-20254)
2. 업데이트 방법
yum update samba
3. 관련 패키지
libsmbclient-4.9.1-11.el7_7.i686.rpm
libsmbclient-4.9.1-11.el7_7.x86_64.rpm
libsmbclient-devel-4.9.1-11.el7_7.i686.rpm
libsmbclient-devel-4.9.1-11.el7_7.x86_64.rpm
libwbclient-4.9.1-11.el7_7.i686.rpm
libwbclient-4.9.1-11.el7_7.x86_64.rpm
libwbclient-devel-4.9.1-11.el7_7.i686.rpm
libwbclient-devel-4.9.1-11.el7_7.x86_64.rpm
samba-4.9.1-11.el7_7.x86_64.rpm
samba-client-4.9.1-11.el7_7.x86_64.rpm
samba-client-libs-4.9.1-11.el7_7.i686.rpm
samba-client-libs-4.9.1-11.el7_7.x86_64.rpm
samba-common-4.9.1-11.el7_7.noarch.rpm
samba-common-libs-4.9.1-11.el7_7.x86_64.rpm
samba-common-tools-4.9.1-11.el7_7.x86_64.rpm
samba-dc-4.9.1-11.el7_7.x86_64.rpm
samba-dc-libs-4.9.1-11.el7_7.x86_64.rpm
samba-debuginfo-4.9.1-11.el7_7.i686.rpm
samba-debuginfo-4.9.1-11.el7_7.i686.rpm
samba-debuginfo-4.9.1-11.el7_7.x86_64.rpm
samba-debuginfo-4.9.1-11.el7_7.x86_64.rpm
samba-devel-4.9.1-11.el7_7.i686.rpm
samba-devel-4.9.1-11.el7_7.x86_64.rpm
samba-krb5-printing-4.9.1-11.el7_7.x86_64.rpm
samba-libs-4.9.1-11.el7_7.i686.rpm
samba-libs-4.9.1-11.el7_7.x86_64.rpm
samba-pidl-4.9.1-11.el7_7.noarch.rpm
samba-python-4.9.1-11.el7_7.i686.rpm
samba-python-4.9.1-11.el7_7.x86_64.rpm
samba-python-test-4.9.1-11.el7_7.x86_64.rpm
samba-test-4.9.1-11.el7_7.x86_64.rpm
samba-test-libs-4.9.1-11.el7_7.i686.rpm
samba-test-libs-4.9.1-11.el7_7.x86_64.rpm
samba-vfs-glusterfs-4.9.1-11.el7_7.x86_64.rpm
samba-winbind-4.9.1-11.el7_7.x86_64.rpm
samba-winbind-clients-4.9.1-11.el7_7.x86_64.rpm
samba-winbind-krb5-locator-4.9.1-11.el7_7.x86_64.rpm
samba-winbind-modules-4.9.1-11.el7_7.i686.rpm
samba-winbind-modules-4.9.1-11.el7_7.x86_64.rpm
4. CVE-ID
CVE-2021-20254
5. 참고
https://access.redhat.com/errata/RHSA-2021:3988