Issued:

2022-01-04

Updated:

2022-01-04

RHSA-2022:0008 - Important: samba security update

Synopsis

Important: samba security update

Type/Severity

Security Advisory Important

Topic

An update for samba is now available for Red Hat Enterprise Linux 8.4 Extended Update Support.

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.

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)

• samba: Subsequent DCE/RPC fragment injection vulnerability (CVE-2021-23192)

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.

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.

Affected Products

Updated Packages

• libwbclient-4.13.3-8.el8_4.i686.rpm
• samba-client-libs-4.13.3-8.el8_4.ppc64le.rpm
• samba-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-libs-4.13.3-8.el8_4.aarch64.rpm
• libsmbclient-devel-4.13.3-8.el8_4.x86_64.rpm
• samba-4.13.3-8.el8_4.ppc64le.rpm
• libwbclient-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-test-libs-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• libsmbclient-4.13.3-8.el8_4.i686.rpm
• samba-krb5-printing-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-clients-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-clients-4.13.3-8.el8_4.s390x.rpm
• libsmbclient-4.13.3-8.el8_4.s390x.rpm
• ctdb-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• libsmbclient-devel-4.13.3-8.el8_4.i686.rpm
• samba-4.13.3-8.el8_4.src.rpm
• python3-samba-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-common-libs-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-debugsource-4.13.3-8.el8_4.i686.rpm
• samba-krb5-printing-4.13.3-8.el8_4.s390x.rpm
• samba-libs-4.13.3-8.el8_4.i686.rpm
• libsmbclient-debuginfo-4.13.3-8.el8_4.s390x.rpm
• ctdb-4.13.3-8.el8_4.ppc64le.rpm
• samba-krb5-printing-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-winexe-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• ctdb-tests-4.13.3-8.el8_4.aarch64.rpm
• samba-client-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-client-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-common-libs-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-winbind-krb5-locator-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• python3-samba-test-4.13.3-8.el8_4.aarch64.rpm
• samba-winbind-krb5-locator-4.13.3-8.el8_4.ppc64le.rpm
• ctdb-tests-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-krb5-locator-4.13.3-8.el8_4.s390x.rpm
• ctdb-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-krb5-locator-4.13.3-8.el8_4.aarch64.rpm
• samba-common-libs-4.13.3-8.el8_4.ppc64le.rpm
• libwbclient-4.13.3-8.el8_4.ppc64le.rpm
• libwbclient-devel-4.13.3-8.el8_4.s390x.rpm
• samba-client-libs-4.13.3-8.el8_4.x86_64.rpm
• samba-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-common-4.13.3-8.el8_4.noarch.rpm
• libsmbclient-4.13.3-8.el8_4.x86_64.rpm
• libsmbclient-devel-4.13.3-8.el8_4.aarch64.rpm
• python3-samba-4.13.3-8.el8_4.ppc64le.rpm
• ctdb-4.13.3-8.el8_4.s390x.rpm
• samba-common-tools-4.13.3-8.el8_4.s390x.rpm
• samba-debugsource-4.13.3-8.el8_4.aarch64.rpm
• ctdb-4.13.3-8.el8_4.aarch64.rpm
• ctdb-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• python3-samba-4.13.3-8.el8_4.aarch64.rpm
• samba-devel-4.13.3-8.el8_4.i686.rpm
• libwbclient-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-test-4.13.3-8.el8_4.ppc64le.rpm
• libsmbclient-4.13.3-8.el8_4.aarch64.rpm
• samba-test-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-common-libs-4.13.3-8.el8_4.x86_64.rpm
• samba-test-4.13.3-8.el8_4.x86_64.rpm
• samba-test-debuginfo-4.13.3-8.el8_4.s390x.rpm
• ctdb-tests-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-test-libs-4.13.3-8.el8_4.s390x.rpm
• samba-test-libs-4.13.3-8.el8_4.x86_64.rpm
• libwbclient-devel-4.13.3-8.el8_4.x86_64.rpm
• samba-common-tools-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• python3-samba-debuginfo-4.13.3-8.el8_4.i686.rpm
• libwbclient-4.13.3-8.el8_4.x86_64.rpm
• libwbclient-devel-4.13.3-8.el8_4.aarch64.rpm
• samba-libs-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• libwbclient-4.13.3-8.el8_4.s390x.rpm
• samba-4.13.3-8.el8_4.aarch64.rpm
• samba-client-libs-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-clients-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-clients-debuginfo-4.13.3-8.el8_4.i686.rpm
• ctdb-tests-4.13.3-8.el8_4.ppc64le.rpm
• samba-krb5-printing-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-krb5-printing-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• libwbclient-devel-4.13.3-8.el8_4.i686.rpm
• samba-libs-4.13.3-8.el8_4.s390x.rpm
• libsmbclient-4.13.3-8.el8_4.ppc64le.rpm
• libsmbclient-devel-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-clients-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• ctdb-tests-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-4.13.3-8.el8_4.aarch64.rpm
• ctdb-tests-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-client-libs-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• libsmbclient-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-common-libs-debuginfo-4.13.3-8.el8_4.s390x.rpm
• ctdb-4.13.3-8.el8_4.x86_64.rpm
• libsmbclient-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-libs-4.13.3-8.el8_4.ppc64le.rpm
• samba-test-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-test-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-krb5-locator-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-test-libs-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-krb5-locator-debuginfo-4.13.3-8.el8_4.s390x.rpm
• python3-samba-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-debugsource-4.13.3-8.el8_4.ppc64le.rpm
• samba-krb5-printing-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-debuginfo-4.13.3-8.el8_4.s390x.rpm
• libwbclient-devel-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-modules-4.13.3-8.el8_4.i686.rpm
• samba-winbind-modules-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-winexe-4.13.3-8.el8_4.x86_64.rpm
• ctdb-tests-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-devel-4.13.3-8.el8_4.aarch64.rpm
• python3-samba-test-4.13.3-8.el8_4.ppc64le.rpm
• python3-samba-test-4.13.3-8.el8_4.s390x.rpm
• samba-client-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-devel-4.13.3-8.el8_4.ppc64le.rpm
• samba-test-libs-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-common-libs-4.13.3-8.el8_4.s390x.rpm
• samba-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-libs-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-client-4.13.3-8.el8_4.aarch64.rpm
• samba-test-libs-4.13.3-8.el8_4.aarch64.rpm
• samba-client-4.13.3-8.el8_4.ppc64le.rpm
• ctdb-debuginfo-4.13.3-8.el8_4.i686.rpm
• python3-samba-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-common-tools-4.13.3-8.el8_4.ppc64le.rpm
• samba-debugsource-4.13.3-8.el8_4.s390x.rpm
• samba-krb5-printing-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-common-tools-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-4.13.3-8.el8_4.aarch64.rpm
• samba-test-libs-4.13.3-8.el8_4.ppc64le.rpm
• samba-test-libs-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-client-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-client-libs-4.13.3-8.el8_4.i686.rpm
• samba-common-tools-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-libs-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• python3-samba-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-client-libs-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-client-libs-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-modules-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-devel-4.13.3-8.el8_4.s390x.rpm
• samba-common-tools-4.13.3-8.el8_4.aarch64.rpm
• samba-common-tools-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-debuginfo-4.13.3-8.el8_4.i686.rpm
• python3-samba-4.13.3-8.el8_4.s390x.rpm
• samba-common-tools-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• libsmbclient-devel-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-clients-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-4.13.3-8.el8_4.ppc64le.rpm
• samba-debugsource-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-pidl-4.13.3-8.el8_4.noarch.rpm
• libsmbclient-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• python3-samba-4.13.3-8.el8_4.i686.rpm
• samba-test-libs-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• ctdb-tests-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• libwbclient-4.13.3-8.el8_4.aarch64.rpm
• samba-test-4.13.3-8.el8_4.s390x.rpm
• samba-vfs-glusterfs-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-krb5-locator-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• ctdb-tests-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• libsmbclient-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-test-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-winbind-krb5-locator-4.13.3-8.el8_4.x86_64.rpm
• samba-krb5-printing-4.13.3-8.el8_4.aarch64.rpm
• samba-client-4.13.3-8.el8_4.x86_64.rpm
• samba-client-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• python3-samba-test-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-clients-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• python3-samba-4.13.3-8.el8_4.x86_64.rpm
• samba-4.13.3-8.el8_4.x86_64.rpm
• samba-krb5-printing-4.13.3-8.el8_4.x86_64.rpm
• samba-libs-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-libs-debuginfo-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-krb5-locator-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-winbind-4.13.3-8.el8_4.x86_64.rpm
• samba-common-libs-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• ctdb-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• libwbclient-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• libwbclient-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-common-tools-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-winbind-modules-debuginfo-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-4.13.3-8.el8_4.s390x.rpm
• samba-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-client-libs-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-winbind-clients-4.13.3-8.el8_4.aarch64.rpm
• samba-devel-4.13.3-8.el8_4.x86_64.rpm
• samba-common-libs-debuginfo-4.13.3-8.el8_4.aarch64.rpm
• samba-winbind-4.13.3-8.el8_4.s390x.rpm
• samba-client-libs-debuginfo-4.13.3-8.el8_4.i686.rpm
• samba-winbind-clients-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-client-4.13.3-8.el8_4.s390x.rpm
• samba-winbind-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-4.13.3-8.el8_4.s390x.rpm
• samba-libs-4.13.3-8.el8_4.x86_64.rpm
• samba-winbind-modules-debuginfo-4.13.3-8.el8_4.i686.rpm
• libwbclient-debuginfo-4.13.3-8.el8_4.ppc64le.rpm
• samba-common-libs-4.13.3-8.el8_4.aarch64.rpm
• samba-client-libs-4.13.3-8.el8_4.aarch64.rpm
• samba-test-4.13.3-8.el8_4.aarch64.rpm

Fixes

• This content is not included.BZ - 2019660
• This content is not included.BZ - 2019666
• This content is not included.BZ - 2019672

CVEs

• CVE-2016-2124
• CVE-2020-25717
• CVE-2021-23192

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.