(RHSA-2017:0494) Moderate: Red Hat Gluster Storage 3.2.0 samba security, bug fixes and enhancement update

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.

The following packages have been upgraded to a later upstream version: samba (4.4.6). (BZ#1382291)

Security Fix(es):

• It was found that Samba always requested forwardable tickets when using Kerberos authentication. A service to which Samba authenticated using Kerberos could subsequently use the ticket to impersonate Samba to other services or domain users. (CVE-2016-2125)

• A flaw was found in the way Samba handled PAC (Privilege Attribute Certificate) checksums. A remote, authenticated attacker could use this flaw to crash the winbindd process. (CVE-2016-2126)

Enhancement(s):

• The gluster vfs plugin now supports more than one volfile server. Samba tries to connect to the next server on the list if one of the gluster servers is not reachable. (BZ#1330081)

• This update provides stability and improvements in error handling and code maintainability in the shadow copy module. (BZ#1385663)