A samba security and bug fix update has been released for Red Hat Gluster Storage 3.5 on Red Hat Enterprise Linux 7 to address an issue where the smb client is vulnerable to filenames containing path separators and a crash after failed character conversion at log level 3 or above.

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

Synopsis: Moderate: samba security and bug fix update
Advisory ID: RHSA-2020:0943-01
Product: Red Hat Gluster Storage
Advisory URL:   https://access.redhat.com/errata/RHSA-2020:0943
Issue date: 2020-03-23
CVE Names: CVE-2019-10218 CVE-2019-14907
=====================================================================

1. Summary:

An update for samba is now available for Red Hat Gluster Storage 3.5 on Red
Hat Enterprise Linux 7.

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-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
allows PC-compatible machines to share files, printers, and various
information.

The Samba packages have been upgraded to upstream version 4.10.4, which
provides a number of bug fixes and enhancements over the previous version.
(BZ#1776952)

Security Fix(es):

* samba: smb client vulnerable to filenames containing path separators
(CVE-2019-10218)

* samba: Crash after failed character conversion at log level 3 or above
(CVE-2019-14907)

Bug Fix(es):

* Earlier, the directory entries did not initialize completely and hence
Samba did not check correctly for DFS redirects. The Windows Explorer did
not display the DFS redirects properly and instead of showing the redirects
as directories, Samba displayed the redirects as files. With this fix, the
Samba's vfs_glusterfs module has been fixed so that DFS redirects now work
as expected. (BZ#1784827)

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

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.

For details on migrating Samba/CTDB configuration files, refer to:

  https://access.redhat.com/solutions/4311261

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

1731906 - Remove 'aio read size = 4096' setting from default smb.conf
1763137 - CVE-2019-10218 samba: smb client vulnerable to filenames containing path separators
1776952 - [RHEL7] [Rebase] Samba: Yum update for Samba will fail due to higher versions in RHEL 7.8
1784827 - vfs_glusterfs does not deal with msdfs links correctly
1791207 - CVE-2019-14907 samba: Crash after failed character conversion at log level 3 or above
1796074 - [RHEL7] [Rebase] Samba rebase requires update to some dependent libraries
1804165 - [Samba] Upgrade is failing with Protected multilib versions: libtalloc-2.2.0-8.el7rhgs.x86_64 != libtalloc-2.1.16-1.el7.i686
1810395 - python3-samba installation fails with unresolved dependencies

6. Package List:

Red Hat Gluster 3.5 Samba on RHEL-7:

Source:
libtalloc-2.2.0-9.el7rhgs.src.rpm
libtdb-1.4.2-4.el7rhgs.src.rpm
libtevent-0.10.0-4.el7rhgs.src.rpm
samba-4.11.6-104.el7rhgs.src.rpm

noarch:
samba-common-4.11.6-104.el7rhgs.noarch.rpm
samba-pidl-4.11.6-104.el7rhgs.noarch.rpm

x86_64:
ctdb-4.11.6-104.el7rhgs.x86_64.rpm
libsmbclient-4.11.6-104.el7rhgs.x86_64.rpm
libsmbclient-devel-4.11.6-104.el7rhgs.x86_64.rpm
libtalloc-2.2.0-9.el7rhgs.x86_64.rpm
libtalloc-debuginfo-2.2.0-9.el7rhgs.x86_64.rpm
libtalloc-devel-2.2.0-9.el7rhgs.x86_64.rpm
libtdb-1.4.2-4.el7rhgs.x86_64.rpm
libtdb-debuginfo-1.4.2-4.el7rhgs.x86_64.rpm
libtdb-devel-1.4.2-4.el7rhgs.x86_64.rpm
libtevent-0.10.0-4.el7rhgs.x86_64.rpm
libtevent-debuginfo-0.10.0-4.el7rhgs.x86_64.rpm
libtevent-devel-0.10.0-4.el7rhgs.x86_64.rpm
libwbclient-4.11.6-104.el7rhgs.x86_64.rpm
libwbclient-devel-4.11.6-104.el7rhgs.x86_64.rpm
python3-samba-4.11.6-104.el7rhgs.x86_64.rpm
python3-talloc-2.2.0-9.el7rhgs.x86_64.rpm
python3-talloc-devel-2.2.0-9.el7rhgs.x86_64.rpm
python3-tdb-1.4.2-4.el7rhgs.x86_64.rpm
python3-tevent-0.10.0-4.el7rhgs.x86_64.rpm
samba-4.11.6-104.el7rhgs.x86_64.rpm
samba-client-4.11.6-104.el7rhgs.x86_64.rpm
samba-client-libs-4.11.6-104.el7rhgs.x86_64.rpm
samba-common-libs-4.11.6-104.el7rhgs.x86_64.rpm
samba-common-tools-4.11.6-104.el7rhgs.x86_64.rpm
samba-debuginfo-4.11.6-104.el7rhgs.x86_64.rpm
samba-devel-4.11.6-104.el7rhgs.x86_64.rpm
samba-krb5-printing-4.11.6-104.el7rhgs.x86_64.rpm
samba-libs-4.11.6-104.el7rhgs.x86_64.rpm
samba-vfs-glusterfs-4.11.6-104.el7rhgs.x86_64.rpm
samba-winbind-4.11.6-104.el7rhgs.x86_64.rpm
samba-winbind-clients-4.11.6-104.el7rhgs.x86_64.rpm
samba-winbind-krb5-locator-4.11.6-104.el7rhgs.x86_64.rpm
samba-winbind-modules-4.11.6-104.el7rhgs.x86_64.rpm
tdb-tools-1.4.2-4.el7rhgs.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-2019-10218
  https://access.redhat.com/security/cve/CVE-2019-14907
  https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2020 Red Hat, Inc.