A samba security and bug fix update has been released for Red Hat Enterprise Linux 7.

RHSA-2021:5192-04: Important: samba security and bug fix update

=====================================================================
Red Hat Security Advisory

Synopsis: Important: samba security and bug fix update
Advisory ID: RHSA-2021:5192-01
Product: Red Hat Enterprise Linux
Advisory URL:   https://access.redhat.com/errata/RHSA-2021:5192
Issue date: 2021-12-16
CVE Names: CVE-2016-2124 CVE-2020-25717
=====================================================================

1. Summary:

An update for samba is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Resilient Storage (v. 7) - ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

3. Description:

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: Active Directory (AD) domain user could become root on domain
members (CVE-2020-25717)

* samba: SMB1 client connections can be downgraded to plaintext
authentication (CVE-2016-2124)

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):

* Backport IDL changes to harden Kerberos communication (BZ#2021428)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

  https://access.redhat.com/articles/11258

After installing this update, the smb service will be restarted
automatically.

5. Bugs fixed (  https://bugzilla.redhat.com/):

2019660 - CVE-2016-2124 samba: SMB1 client connections can be downgraded to plaintext authentication
2019672 - CVE-2020-25717 samba: Active Directory (AD) domain user could become root on domain members

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
samba-4.10.16-17.el7_9.src.rpm

noarch:
samba-common-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-4.10.16-17.el7_9.i686.rpm
libsmbclient-4.10.16-17.el7_9.x86_64.rpm
libwbclient-4.10.16-17.el7_9.i686.rpm
libwbclient-4.10.16-17.el7_9.x86_64.rpm
samba-client-4.10.16-17.el7_9.x86_64.rpm
samba-client-libs-4.10.16-17.el7_9.i686.rpm
samba-client-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-libs-4.10.16-17.el7_9.i686.rpm
samba-common-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-tools-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-krb5-printing-4.10.16-17.el7_9.x86_64.rpm
samba-libs-4.10.16-17.el7_9.i686.rpm
samba-libs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-clients-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-modules-4.10.16-17.el7_9.i686.rpm
samba-winbind-modules-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
samba-pidl-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-devel-4.10.16-17.el7_9.i686.rpm
libsmbclient-devel-4.10.16-17.el7_9.x86_64.rpm
libwbclient-devel-4.10.16-17.el7_9.i686.rpm
libwbclient-devel-4.10.16-17.el7_9.x86_64.rpm
samba-4.10.16-17.el7_9.x86_64.rpm
samba-dc-4.10.16-17.el7_9.x86_64.rpm
samba-dc-libs-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-devel-4.10.16-17.el7_9.i686.rpm
samba-devel-4.10.16-17.el7_9.x86_64.rpm
samba-python-4.10.16-17.el7_9.i686.rpm
samba-python-4.10.16-17.el7_9.x86_64.rpm
samba-python-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-libs-4.10.16-17.el7_9.i686.rpm
samba-test-libs-4.10.16-17.el7_9.x86_64.rpm
samba-vfs-glusterfs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
samba-4.10.16-17.el7_9.src.rpm

noarch:
samba-common-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-4.10.16-17.el7_9.i686.rpm
libsmbclient-4.10.16-17.el7_9.x86_64.rpm
libwbclient-4.10.16-17.el7_9.i686.rpm
libwbclient-4.10.16-17.el7_9.x86_64.rpm
samba-client-4.10.16-17.el7_9.x86_64.rpm
samba-client-libs-4.10.16-17.el7_9.i686.rpm
samba-client-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-libs-4.10.16-17.el7_9.i686.rpm
samba-common-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-tools-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-libs-4.10.16-17.el7_9.i686.rpm
samba-libs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-clients-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-modules-4.10.16-17.el7_9.i686.rpm
samba-winbind-modules-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
samba-pidl-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-devel-4.10.16-17.el7_9.i686.rpm
libsmbclient-devel-4.10.16-17.el7_9.x86_64.rpm
libwbclient-devel-4.10.16-17.el7_9.i686.rpm
libwbclient-devel-4.10.16-17.el7_9.x86_64.rpm
samba-4.10.16-17.el7_9.x86_64.rpm
samba-dc-4.10.16-17.el7_9.x86_64.rpm
samba-dc-libs-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-devel-4.10.16-17.el7_9.i686.rpm
samba-devel-4.10.16-17.el7_9.x86_64.rpm
samba-krb5-printing-4.10.16-17.el7_9.x86_64.rpm
samba-python-4.10.16-17.el7_9.i686.rpm
samba-python-4.10.16-17.el7_9.x86_64.rpm
samba-python-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-libs-4.10.16-17.el7_9.i686.rpm
samba-test-libs-4.10.16-17.el7_9.x86_64.rpm
samba-vfs-glusterfs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
samba-4.10.16-17.el7_9.src.rpm

noarch:
samba-common-4.10.16-17.el7_9.noarch.rpm

ppc64:
libsmbclient-4.10.16-17.el7_9.ppc.rpm
libsmbclient-4.10.16-17.el7_9.ppc64.rpm
libwbclient-4.10.16-17.el7_9.ppc.rpm
libwbclient-4.10.16-17.el7_9.ppc64.rpm
samba-4.10.16-17.el7_9.ppc64.rpm
samba-client-4.10.16-17.el7_9.ppc64.rpm
samba-client-libs-4.10.16-17.el7_9.ppc.rpm
samba-client-libs-4.10.16-17.el7_9.ppc64.rpm
samba-common-libs-4.10.16-17.el7_9.ppc.rpm
samba-common-libs-4.10.16-17.el7_9.ppc64.rpm
samba-common-tools-4.10.16-17.el7_9.ppc64.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc64.rpm
samba-krb5-printing-4.10.16-17.el7_9.ppc64.rpm
samba-libs-4.10.16-17.el7_9.ppc.rpm
samba-libs-4.10.16-17.el7_9.ppc64.rpm
samba-winbind-4.10.16-17.el7_9.ppc64.rpm
samba-winbind-clients-4.10.16-17.el7_9.ppc64.rpm
samba-winbind-modules-4.10.16-17.el7_9.ppc.rpm
samba-winbind-modules-4.10.16-17.el7_9.ppc64.rpm

ppc64le:
libsmbclient-4.10.16-17.el7_9.ppc64le.rpm
libwbclient-4.10.16-17.el7_9.ppc64le.rpm
samba-4.10.16-17.el7_9.ppc64le.rpm
samba-client-4.10.16-17.el7_9.ppc64le.rpm
samba-client-libs-4.10.16-17.el7_9.ppc64le.rpm
samba-common-libs-4.10.16-17.el7_9.ppc64le.rpm
samba-common-tools-4.10.16-17.el7_9.ppc64le.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc64le.rpm
samba-krb5-printing-4.10.16-17.el7_9.ppc64le.rpm
samba-libs-4.10.16-17.el7_9.ppc64le.rpm
samba-winbind-4.10.16-17.el7_9.ppc64le.rpm
samba-winbind-clients-4.10.16-17.el7_9.ppc64le.rpm
samba-winbind-modules-4.10.16-17.el7_9.ppc64le.rpm

s390x:
libsmbclient-4.10.16-17.el7_9.s390.rpm
libsmbclient-4.10.16-17.el7_9.s390x.rpm
libwbclient-4.10.16-17.el7_9.s390.rpm
libwbclient-4.10.16-17.el7_9.s390x.rpm
samba-4.10.16-17.el7_9.s390x.rpm
samba-client-4.10.16-17.el7_9.s390x.rpm
samba-client-libs-4.10.16-17.el7_9.s390.rpm
samba-client-libs-4.10.16-17.el7_9.s390x.rpm
samba-common-libs-4.10.16-17.el7_9.s390.rpm
samba-common-libs-4.10.16-17.el7_9.s390x.rpm
samba-common-tools-4.10.16-17.el7_9.s390x.rpm
samba-debuginfo-4.10.16-17.el7_9.s390.rpm
samba-debuginfo-4.10.16-17.el7_9.s390x.rpm
samba-krb5-printing-4.10.16-17.el7_9.s390x.rpm
samba-libs-4.10.16-17.el7_9.s390.rpm
samba-libs-4.10.16-17.el7_9.s390x.rpm
samba-winbind-4.10.16-17.el7_9.s390x.rpm
samba-winbind-clients-4.10.16-17.el7_9.s390x.rpm
samba-winbind-modules-4.10.16-17.el7_9.s390.rpm
samba-winbind-modules-4.10.16-17.el7_9.s390x.rpm

x86_64:
libsmbclient-4.10.16-17.el7_9.i686.rpm
libsmbclient-4.10.16-17.el7_9.x86_64.rpm
libwbclient-4.10.16-17.el7_9.i686.rpm
libwbclient-4.10.16-17.el7_9.x86_64.rpm
samba-4.10.16-17.el7_9.x86_64.rpm
samba-client-4.10.16-17.el7_9.x86_64.rpm
samba-client-libs-4.10.16-17.el7_9.i686.rpm
samba-client-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-libs-4.10.16-17.el7_9.i686.rpm
samba-common-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-tools-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-krb5-printing-4.10.16-17.el7_9.x86_64.rpm
samba-libs-4.10.16-17.el7_9.i686.rpm
samba-libs-4.10.16-17.el7_9.x86_64.rpm
samba-python-4.10.16-17.el7_9.i686.rpm
samba-python-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-clients-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-modules-4.10.16-17.el7_9.i686.rpm
samba-winbind-modules-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server Resilient Storage (v. 7):

ppc64le:
ctdb-4.10.16-17.el7_9.ppc64le.rpm
ctdb-tests-4.10.16-17.el7_9.ppc64le.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc64le.rpm

s390x:
ctdb-4.10.16-17.el7_9.s390x.rpm
ctdb-tests-4.10.16-17.el7_9.s390x.rpm
samba-debuginfo-4.10.16-17.el7_9.s390x.rpm

x86_64:
ctdb-4.10.16-17.el7_9.x86_64.rpm
ctdb-tests-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
samba-pidl-4.10.16-17.el7_9.noarch.rpm

ppc64:
libsmbclient-devel-4.10.16-17.el7_9.ppc.rpm
libsmbclient-devel-4.10.16-17.el7_9.ppc64.rpm
libwbclient-devel-4.10.16-17.el7_9.ppc.rpm
libwbclient-devel-4.10.16-17.el7_9.ppc64.rpm
samba-dc-4.10.16-17.el7_9.ppc64.rpm
samba-dc-libs-4.10.16-17.el7_9.ppc64.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc64.rpm
samba-devel-4.10.16-17.el7_9.ppc.rpm
samba-devel-4.10.16-17.el7_9.ppc64.rpm
samba-python-4.10.16-17.el7_9.ppc.rpm
samba-python-4.10.16-17.el7_9.ppc64.rpm
samba-python-test-4.10.16-17.el7_9.ppc64.rpm
samba-test-4.10.16-17.el7_9.ppc64.rpm
samba-test-libs-4.10.16-17.el7_9.ppc.rpm
samba-test-libs-4.10.16-17.el7_9.ppc64.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.ppc64.rpm

ppc64le:
libsmbclient-devel-4.10.16-17.el7_9.ppc64le.rpm
libwbclient-devel-4.10.16-17.el7_9.ppc64le.rpm
samba-dc-4.10.16-17.el7_9.ppc64le.rpm
samba-dc-libs-4.10.16-17.el7_9.ppc64le.rpm
samba-debuginfo-4.10.16-17.el7_9.ppc64le.rpm
samba-devel-4.10.16-17.el7_9.ppc64le.rpm
samba-python-4.10.16-17.el7_9.ppc64le.rpm
samba-python-test-4.10.16-17.el7_9.ppc64le.rpm
samba-test-4.10.16-17.el7_9.ppc64le.rpm
samba-test-libs-4.10.16-17.el7_9.ppc64le.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.ppc64le.rpm

s390x:
libsmbclient-devel-4.10.16-17.el7_9.s390.rpm
libsmbclient-devel-4.10.16-17.el7_9.s390x.rpm
libwbclient-devel-4.10.16-17.el7_9.s390.rpm
libwbclient-devel-4.10.16-17.el7_9.s390x.rpm
samba-dc-4.10.16-17.el7_9.s390x.rpm
samba-dc-libs-4.10.16-17.el7_9.s390x.rpm
samba-debuginfo-4.10.16-17.el7_9.s390.rpm
samba-debuginfo-4.10.16-17.el7_9.s390x.rpm
samba-devel-4.10.16-17.el7_9.s390.rpm
samba-devel-4.10.16-17.el7_9.s390x.rpm
samba-python-4.10.16-17.el7_9.s390.rpm
samba-python-4.10.16-17.el7_9.s390x.rpm
samba-python-test-4.10.16-17.el7_9.s390x.rpm
samba-test-4.10.16-17.el7_9.s390x.rpm
samba-test-libs-4.10.16-17.el7_9.s390.rpm
samba-test-libs-4.10.16-17.el7_9.s390x.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.s390x.rpm

x86_64:
libsmbclient-devel-4.10.16-17.el7_9.i686.rpm
libsmbclient-devel-4.10.16-17.el7_9.x86_64.rpm
libwbclient-devel-4.10.16-17.el7_9.i686.rpm
libwbclient-devel-4.10.16-17.el7_9.x86_64.rpm
samba-dc-4.10.16-17.el7_9.x86_64.rpm
samba-dc-libs-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-devel-4.10.16-17.el7_9.i686.rpm
samba-devel-4.10.16-17.el7_9.x86_64.rpm
samba-python-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-libs-4.10.16-17.el7_9.i686.rpm
samba-test-libs-4.10.16-17.el7_9.x86_64.rpm
samba-vfs-glusterfs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
samba-4.10.16-17.el7_9.src.rpm

noarch:
samba-common-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-4.10.16-17.el7_9.i686.rpm
libsmbclient-4.10.16-17.el7_9.x86_64.rpm
libwbclient-4.10.16-17.el7_9.i686.rpm
libwbclient-4.10.16-17.el7_9.x86_64.rpm
samba-4.10.16-17.el7_9.x86_64.rpm
samba-client-4.10.16-17.el7_9.x86_64.rpm
samba-client-libs-4.10.16-17.el7_9.i686.rpm
samba-client-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-libs-4.10.16-17.el7_9.i686.rpm
samba-common-libs-4.10.16-17.el7_9.x86_64.rpm
samba-common-tools-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-krb5-printing-4.10.16-17.el7_9.x86_64.rpm
samba-libs-4.10.16-17.el7_9.i686.rpm
samba-libs-4.10.16-17.el7_9.x86_64.rpm
samba-python-4.10.16-17.el7_9.i686.rpm
samba-python-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-clients-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-modules-4.10.16-17.el7_9.i686.rpm
samba-winbind-modules-4.10.16-17.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
samba-pidl-4.10.16-17.el7_9.noarch.rpm

x86_64:
libsmbclient-devel-4.10.16-17.el7_9.i686.rpm
libsmbclient-devel-4.10.16-17.el7_9.x86_64.rpm
libwbclient-devel-4.10.16-17.el7_9.i686.rpm
libwbclient-devel-4.10.16-17.el7_9.x86_64.rpm
samba-dc-4.10.16-17.el7_9.x86_64.rpm
samba-dc-libs-4.10.16-17.el7_9.x86_64.rpm
samba-debuginfo-4.10.16-17.el7_9.i686.rpm
samba-debuginfo-4.10.16-17.el7_9.x86_64.rpm
samba-devel-4.10.16-17.el7_9.i686.rpm
samba-devel-4.10.16-17.el7_9.x86_64.rpm
samba-python-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-4.10.16-17.el7_9.x86_64.rpm
samba-test-libs-4.10.16-17.el7_9.i686.rpm
samba-test-libs-4.10.16-17.el7_9.x86_64.rpm
samba-vfs-glusterfs-4.10.16-17.el7_9.x86_64.rpm
samba-winbind-krb5-locator-4.10.16-17.el7_9.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
  https://access.redhat.com/security/team/key/

7. References:

  https://access.redhat.com/security/cve/CVE-2016-2124
  https://access.redhat.com/security/cve/CVE-2020-25717
  https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is . More contact
details at   https://access.redhat.com/security/team/contact/

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