RHSA-2020:0943 - Security Advisory

Topic

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.

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

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

Affected Products

• Red Hat Gluster Storage Server for On-premise 3 for RHEL 7 x86_64

Fixes

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

CVEs

• CVE-2019-10218
• CVE-2019-14907

References

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