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

Synopsis:          Moderate: samba security, bug fix and enhancement update
Advisory ID:       RHSA-2021:3724-01
Product:           Red Hat Gluster Storage
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:3724
Issue date:        2021-10-05
CVE Names:         CVE-2021-20254 
=====================================================================

1. Summary:

Updated samba packages that fix several bugs with added enhancement are now
available for Red Hat Gluster Storage 3.5 on 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.

2. Relevant releases/architectures:

Red Hat Gluster 3.5 Samba on RHEL-8 - noarch, x86_64

3. Description:

Red Hat Gluster Storage is a software only scale-out storage solution that
provides flexible and affordable unstructured data storage. It unifies data
storage and infrastructure, increases performance, and improves
availability and manageability to meet enterprise-level storage challenges.

Security Fix(es):

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

Users of samba with Red Hat Gluster Storage are advised to upgrade to these
updated packages.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

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

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

1944778 - /sbin/ldconfig: /lib64/libsmbldap.so.2 is not a symbolic link
1949442 - CVE-2021-20254 samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token
1975274 - [Samba] Higher version of rhgs samba is required to avoid conflict with rhel-8.5 based samba version

6. Package List:

Red Hat Gluster 3.5 Samba on RHEL-8:

Source:
libtalloc-2.3.2-5.el8rhgs.src.rpm
samba-4.14.5-201.el8rhgs.src.rpm

noarch:
samba-common-4.14.5-201.el8rhgs.noarch.rpm
samba-pidl-4.14.5-201.el8rhgs.noarch.rpm

x86_64:
ctdb-4.14.5-201.el8rhgs.x86_64.rpm
ctdb-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
libsmbclient-4.14.5-201.el8rhgs.x86_64.rpm
libsmbclient-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
libsmbclient-devel-4.14.5-201.el8rhgs.x86_64.rpm
libtalloc-2.3.2-5.el8rhgs.x86_64.rpm
libtalloc-debuginfo-2.3.2-5.el8rhgs.x86_64.rpm
libtalloc-debugsource-2.3.2-5.el8rhgs.x86_64.rpm
libtalloc-devel-2.3.2-5.el8rhgs.x86_64.rpm
libwbclient-4.14.5-201.el8rhgs.x86_64.rpm
libwbclient-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
libwbclient-devel-4.14.5-201.el8rhgs.x86_64.rpm
python3-samba-4.14.5-201.el8rhgs.x86_64.rpm
python3-samba-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
python3-talloc-2.3.2-5.el8rhgs.x86_64.rpm
python3-talloc-debuginfo-2.3.2-5.el8rhgs.x86_64.rpm
python3-talloc-devel-2.3.2-5.el8rhgs.x86_64.rpm
samba-4.14.5-201.el8rhgs.x86_64.rpm
samba-client-4.14.5-201.el8rhgs.x86_64.rpm
samba-client-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-client-libs-4.14.5-201.el8rhgs.x86_64.rpm
samba-client-libs-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-common-libs-4.14.5-201.el8rhgs.x86_64.rpm
samba-common-libs-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-common-tools-4.14.5-201.el8rhgs.x86_64.rpm
samba-common-tools-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-debugsource-4.14.5-201.el8rhgs.x86_64.rpm
samba-devel-4.14.5-201.el8rhgs.x86_64.rpm
samba-krb5-printing-4.14.5-201.el8rhgs.x86_64.rpm
samba-krb5-printing-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-libs-4.14.5-201.el8rhgs.x86_64.rpm
samba-libs-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-test-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-test-libs-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-vfs-glusterfs-4.14.5-201.el8rhgs.x86_64.rpm
samba-vfs-glusterfs-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-vfs-iouring-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-clients-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-clients-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-krb5-locator-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-krb5-locator-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-modules-4.14.5-201.el8rhgs.x86_64.rpm
samba-winbind-modules-debuginfo-4.14.5-201.el8rhgs.x86_64.rpm
samba-winexe-debuginfo-4.14.5-201.el8rhgs.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-2021-20254
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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