{"id":"RLSA-2021:1647","summary":"Moderate: samba security, bug fix, and enhancement update","details":"Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.\n\nThe following packages have been upgraded to a later upstream version: samba (4.13.3). (BZ#1878109)\n\nSecurity Fix(es):\n\n* samba: Netlogon elevation of privilege vulnerability (Zerologon) (CVE-2020-1472)\n\n* samba: Missing handle permissions check in SMB1/2/3 ChangeNotify (CVE-2020-14318)\n\n* samba: Unprivileged user can crash winbind (CVE-2020-14323)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.4 Release Notes linked from the References section.","modified":"2026-03-11T05:58:49.229326Z","published":"2021-05-18T05:44:25Z","upstream":["CVE-2020-14318","CVE-2020-14323","CVE-2020-1472"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:1647"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1818038"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1869702"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1872833"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1878109"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1879822"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1888990"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1891685"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1892631"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1896736"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1898866"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1902198"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1904174"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1924571"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1924615"}],"affected":[{"package":{"name":"openchange","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/openchange?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.3-27.el8"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:1647.json"}},{"package":{"name":"samba","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/samba?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.13.3-3.el8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:1647.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}