ctdb, libsmbclient, libwbclient, samba security update

CentOS Errata and Security Advisory CESA-2021:2313

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.

Security Fix(es):

• samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254)

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.

Bug Fix(es):

• smb.service stops when samba rpms are updated (BZ#1930747)

• samba printing dumps core (BZ#1937867)

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-June/086110.html

Affected packages:
ctdb
ctdb-tests
libsmbclient
libsmbclient-devel
libwbclient
libwbclient-devel
samba
samba-client
samba-client-libs
samba-common
samba-common-libs
samba-common-tools
samba-dc
samba-dc-libs
samba-devel
samba-krb5-printing
samba-libs
samba-pidl
samba-python
samba-python-test
samba-test
samba-test-libs
samba-vfs-glusterfs
samba-winbind
samba-winbind-clients
samba-winbind-krb5-locator
samba-winbind-modules

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:2313