RHSA-2021:1647 — Security Advisory

An update for samba is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

The following packages have been upgraded to a later upstream version: samba (4.13.3). (BZ#1878109)

Security Fix(es):

• samba: Netlogon elevation of privilege vulnerability (Zerologon) (CVE-2020-1472)

• samba: Missing handle permissions check in SMB1/2/3 ChangeNotify (CVE-2020-14318)

• samba: Unprivileged user can crash winbind (CVE-2020-14323)

For 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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.