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[RHSA-2017:1265-01] Moderate: samba security and bug fix update

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=====================================================================

Red Hat Security Advisory

 

Synopsis: Moderate: samba security and bug fix update

Advisory ID: RHSA-2017:1265-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2017:1265

Issue date: 2017-05-22

CVE Names: CVE-2016-2125 CVE-2016-2126 CVE-2017-2619

=====================================================================

 

1. Summary:

 

An update for samba is now available for 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 Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Resilient Storage (v. 7) - x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 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

allow PC-compatible machines to share files, printers, and various

information.

 

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)

 

* A race condition was found in samba server. A malicious samba client

could use this flaw to access files and directories, in areas of the server

file system not exported under the share definitions. (CVE-2017-2619)

 

Red Hat would like to thank the Samba project for reporting CVE-2017-2619.

Upstream acknowledges Jann Horn (Google) as the original reporter of

CVE-2017-2619.

 

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.

 

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

 

1403114 - CVE-2016-2125 samba: Unconditional privilege delegation to Kerberos servers in trusted realms

1403115 - CVE-2016-2126 samba: Flaws in Kerberos PAC validation can trigger privilege elevation

1429472 - CVE-2017-2619 samba: symlink race permits opening files outside share directory

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

samba-4.4.4-13.el7_3.src.rpm

 

noarch:

samba-common-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-4.4.4-13.el7_3.i686.rpm

libsmbclient-4.4.4-13.el7_3.x86_64.rpm

libwbclient-4.4.4-13.el7_3.i686.rpm

libwbclient-4.4.4-13.el7_3.x86_64.rpm

samba-client-4.4.4-13.el7_3.x86_64.rpm

samba-client-libs-4.4.4-13.el7_3.i686.rpm

samba-client-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-tools-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-krb5-printing-4.4.4-13.el7_3.x86_64.rpm

samba-libs-4.4.4-13.el7_3.i686.rpm

samba-libs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-clients-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-modules-4.4.4-13.el7_3.i686.rpm

samba-winbind-modules-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

noarch:

samba-pidl-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-devel-4.4.4-13.el7_3.i686.rpm

libsmbclient-devel-4.4.4-13.el7_3.x86_64.rpm

libwbclient-devel-4.4.4-13.el7_3.i686.rpm

libwbclient-devel-4.4.4-13.el7_3.x86_64.rpm

samba-4.4.4-13.el7_3.x86_64.rpm

samba-dc-4.4.4-13.el7_3.x86_64.rpm

samba-dc-libs-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-devel-4.4.4-13.el7_3.i686.rpm

samba-devel-4.4.4-13.el7_3.x86_64.rpm

samba-python-4.4.4-13.el7_3.x86_64.rpm

samba-test-4.4.4-13.el7_3.x86_64.rpm

samba-test-libs-4.4.4-13.el7_3.i686.rpm

samba-test-libs-4.4.4-13.el7_3.x86_64.rpm

samba-vfs-glusterfs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

samba-4.4.4-13.el7_3.src.rpm

 

noarch:

samba-common-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-4.4.4-13.el7_3.i686.rpm

libsmbclient-4.4.4-13.el7_3.x86_64.rpm

libwbclient-4.4.4-13.el7_3.i686.rpm

libwbclient-4.4.4-13.el7_3.x86_64.rpm

samba-client-4.4.4-13.el7_3.x86_64.rpm

samba-client-libs-4.4.4-13.el7_3.i686.rpm

samba-client-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-tools-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-libs-4.4.4-13.el7_3.i686.rpm

samba-libs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-clients-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-modules-4.4.4-13.el7_3.i686.rpm

samba-winbind-modules-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

noarch:

samba-pidl-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-devel-4.4.4-13.el7_3.i686.rpm

libsmbclient-devel-4.4.4-13.el7_3.x86_64.rpm

libwbclient-devel-4.4.4-13.el7_3.i686.rpm

libwbclient-devel-4.4.4-13.el7_3.x86_64.rpm

samba-4.4.4-13.el7_3.x86_64.rpm

samba-dc-4.4.4-13.el7_3.x86_64.rpm

samba-dc-libs-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-devel-4.4.4-13.el7_3.i686.rpm

samba-devel-4.4.4-13.el7_3.x86_64.rpm

samba-krb5-printing-4.4.4-13.el7_3.x86_64.rpm

samba-python-4.4.4-13.el7_3.x86_64.rpm

samba-test-4.4.4-13.el7_3.x86_64.rpm

samba-test-libs-4.4.4-13.el7_3.i686.rpm

samba-test-libs-4.4.4-13.el7_3.x86_64.rpm

samba-vfs-glusterfs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

samba-4.4.4-13.el7_3.src.rpm

 

aarch64:

libsmbclient-4.4.4-13.el7_3.aarch64.rpm

libwbclient-4.4.4-13.el7_3.aarch64.rpm

samba-4.4.4-13.el7_3.aarch64.rpm

samba-client-4.4.4-13.el7_3.aarch64.rpm

samba-client-libs-4.4.4-13.el7_3.aarch64.rpm

samba-common-libs-4.4.4-13.el7_3.aarch64.rpm

samba-common-tools-4.4.4-13.el7_3.aarch64.rpm

samba-debuginfo-4.4.4-13.el7_3.aarch64.rpm

samba-krb5-printing-4.4.4-13.el7_3.aarch64.rpm

samba-libs-4.4.4-13.el7_3.aarch64.rpm

samba-python-4.4.4-13.el7_3.aarch64.rpm

samba-winbind-4.4.4-13.el7_3.aarch64.rpm

samba-winbind-clients-4.4.4-13.el7_3.aarch64.rpm

samba-winbind-modules-4.4.4-13.el7_3.aarch64.rpm

 

noarch:

samba-common-4.4.4-13.el7_3.noarch.rpm

 

ppc64:

libsmbclient-4.4.4-13.el7_3.ppc.rpm

libsmbclient-4.4.4-13.el7_3.ppc64.rpm

libwbclient-4.4.4-13.el7_3.ppc.rpm

libwbclient-4.4.4-13.el7_3.ppc64.rpm

samba-4.4.4-13.el7_3.ppc64.rpm

samba-client-4.4.4-13.el7_3.ppc64.rpm

samba-client-libs-4.4.4-13.el7_3.ppc.rpm

samba-client-libs-4.4.4-13.el7_3.ppc64.rpm

samba-common-libs-4.4.4-13.el7_3.ppc64.rpm

samba-common-tools-4.4.4-13.el7_3.ppc64.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc64.rpm

samba-krb5-printing-4.4.4-13.el7_3.ppc64.rpm

samba-libs-4.4.4-13.el7_3.ppc.rpm

samba-libs-4.4.4-13.el7_3.ppc64.rpm

samba-winbind-4.4.4-13.el7_3.ppc64.rpm

samba-winbind-clients-4.4.4-13.el7_3.ppc64.rpm

samba-winbind-modules-4.4.4-13.el7_3.ppc.rpm

samba-winbind-modules-4.4.4-13.el7_3.ppc64.rpm

 

ppc64le:

libsmbclient-4.4.4-13.el7_3.ppc64le.rpm

libwbclient-4.4.4-13.el7_3.ppc64le.rpm

samba-4.4.4-13.el7_3.ppc64le.rpm

samba-client-4.4.4-13.el7_3.ppc64le.rpm

samba-client-libs-4.4.4-13.el7_3.ppc64le.rpm

samba-common-libs-4.4.4-13.el7_3.ppc64le.rpm

samba-common-tools-4.4.4-13.el7_3.ppc64le.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc64le.rpm

samba-krb5-printing-4.4.4-13.el7_3.ppc64le.rpm

samba-libs-4.4.4-13.el7_3.ppc64le.rpm

samba-winbind-4.4.4-13.el7_3.ppc64le.rpm

samba-winbind-clients-4.4.4-13.el7_3.ppc64le.rpm

samba-winbind-modules-4.4.4-13.el7_3.ppc64le.rpm

 

s390x:

libsmbclient-4.4.4-13.el7_3.s390.rpm

libsmbclient-4.4.4-13.el7_3.s390x.rpm

libwbclient-4.4.4-13.el7_3.s390.rpm

libwbclient-4.4.4-13.el7_3.s390x.rpm

samba-4.4.4-13.el7_3.s390x.rpm

samba-client-4.4.4-13.el7_3.s390x.rpm

samba-client-libs-4.4.4-13.el7_3.s390.rpm

samba-client-libs-4.4.4-13.el7_3.s390x.rpm

samba-common-libs-4.4.4-13.el7_3.s390x.rpm

samba-common-tools-4.4.4-13.el7_3.s390x.rpm

samba-debuginfo-4.4.4-13.el7_3.s390.rpm

samba-debuginfo-4.4.4-13.el7_3.s390x.rpm

samba-krb5-printing-4.4.4-13.el7_3.s390x.rpm

samba-libs-4.4.4-13.el7_3.s390.rpm

samba-libs-4.4.4-13.el7_3.s390x.rpm

samba-winbind-4.4.4-13.el7_3.s390x.rpm

samba-winbind-clients-4.4.4-13.el7_3.s390x.rpm

samba-winbind-modules-4.4.4-13.el7_3.s390.rpm

samba-winbind-modules-4.4.4-13.el7_3.s390x.rpm

 

x86_64:

libsmbclient-4.4.4-13.el7_3.i686.rpm

libsmbclient-4.4.4-13.el7_3.x86_64.rpm

libwbclient-4.4.4-13.el7_3.i686.rpm

libwbclient-4.4.4-13.el7_3.x86_64.rpm

samba-4.4.4-13.el7_3.x86_64.rpm

samba-client-4.4.4-13.el7_3.x86_64.rpm

samba-client-libs-4.4.4-13.el7_3.i686.rpm

samba-client-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-tools-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-krb5-printing-4.4.4-13.el7_3.x86_64.rpm

samba-libs-4.4.4-13.el7_3.i686.rpm

samba-libs-4.4.4-13.el7_3.x86_64.rpm

samba-python-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-clients-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-modules-4.4.4-13.el7_3.i686.rpm

samba-winbind-modules-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Server Resilient Storage (v. 7):

 

x86_64:

ctdb-4.4.4-13.el7_3.x86_64.rpm

ctdb-tests-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

aarch64:

libsmbclient-devel-4.4.4-13.el7_3.aarch64.rpm

libwbclient-devel-4.4.4-13.el7_3.aarch64.rpm

samba-dc-4.4.4-13.el7_3.aarch64.rpm

samba-dc-libs-4.4.4-13.el7_3.aarch64.rpm

samba-debuginfo-4.4.4-13.el7_3.aarch64.rpm

samba-devel-4.4.4-13.el7_3.aarch64.rpm

samba-test-4.4.4-13.el7_3.aarch64.rpm

samba-test-libs-4.4.4-13.el7_3.aarch64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.aarch64.rpm

 

noarch:

samba-pidl-4.4.4-13.el7_3.noarch.rpm

 

ppc64:

libsmbclient-devel-4.4.4-13.el7_3.ppc.rpm

libsmbclient-devel-4.4.4-13.el7_3.ppc64.rpm

libwbclient-devel-4.4.4-13.el7_3.ppc.rpm

libwbclient-devel-4.4.4-13.el7_3.ppc64.rpm

samba-dc-4.4.4-13.el7_3.ppc64.rpm

samba-dc-libs-4.4.4-13.el7_3.ppc64.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc64.rpm

samba-devel-4.4.4-13.el7_3.ppc.rpm

samba-devel-4.4.4-13.el7_3.ppc64.rpm

samba-python-4.4.4-13.el7_3.ppc64.rpm

samba-test-4.4.4-13.el7_3.ppc64.rpm

samba-test-libs-4.4.4-13.el7_3.ppc.rpm

samba-test-libs-4.4.4-13.el7_3.ppc64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.ppc64.rpm

 

ppc64le:

libsmbclient-devel-4.4.4-13.el7_3.ppc64le.rpm

libwbclient-devel-4.4.4-13.el7_3.ppc64le.rpm

samba-dc-4.4.4-13.el7_3.ppc64le.rpm

samba-dc-libs-4.4.4-13.el7_3.ppc64le.rpm

samba-debuginfo-4.4.4-13.el7_3.ppc64le.rpm

samba-devel-4.4.4-13.el7_3.ppc64le.rpm

samba-python-4.4.4-13.el7_3.ppc64le.rpm

samba-test-4.4.4-13.el7_3.ppc64le.rpm

samba-test-libs-4.4.4-13.el7_3.ppc64le.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.ppc64le.rpm

 

s390x:

libsmbclient-devel-4.4.4-13.el7_3.s390.rpm

libsmbclient-devel-4.4.4-13.el7_3.s390x.rpm

libwbclient-devel-4.4.4-13.el7_3.s390.rpm

libwbclient-devel-4.4.4-13.el7_3.s390x.rpm

samba-dc-4.4.4-13.el7_3.s390x.rpm

samba-dc-libs-4.4.4-13.el7_3.s390x.rpm

samba-debuginfo-4.4.4-13.el7_3.s390.rpm

samba-debuginfo-4.4.4-13.el7_3.s390x.rpm

samba-devel-4.4.4-13.el7_3.s390.rpm

samba-devel-4.4.4-13.el7_3.s390x.rpm

samba-python-4.4.4-13.el7_3.s390x.rpm

samba-test-4.4.4-13.el7_3.s390x.rpm

samba-test-libs-4.4.4-13.el7_3.s390.rpm

samba-test-libs-4.4.4-13.el7_3.s390x.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.s390x.rpm

 

x86_64:

libsmbclient-devel-4.4.4-13.el7_3.i686.rpm

libsmbclient-devel-4.4.4-13.el7_3.x86_64.rpm

libwbclient-devel-4.4.4-13.el7_3.i686.rpm

libwbclient-devel-4.4.4-13.el7_3.x86_64.rpm

samba-dc-4.4.4-13.el7_3.x86_64.rpm

samba-dc-libs-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-devel-4.4.4-13.el7_3.i686.rpm

samba-devel-4.4.4-13.el7_3.x86_64.rpm

samba-test-4.4.4-13.el7_3.x86_64.rpm

samba-test-libs-4.4.4-13.el7_3.i686.rpm

samba-test-libs-4.4.4-13.el7_3.x86_64.rpm

samba-vfs-glusterfs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

samba-4.4.4-13.el7_3.src.rpm

 

noarch:

samba-common-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-4.4.4-13.el7_3.i686.rpm

libsmbclient-4.4.4-13.el7_3.x86_64.rpm

libwbclient-4.4.4-13.el7_3.i686.rpm

libwbclient-4.4.4-13.el7_3.x86_64.rpm

samba-4.4.4-13.el7_3.x86_64.rpm

samba-client-4.4.4-13.el7_3.x86_64.rpm

samba-client-libs-4.4.4-13.el7_3.i686.rpm

samba-client-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-libs-4.4.4-13.el7_3.x86_64.rpm

samba-common-tools-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-krb5-printing-4.4.4-13.el7_3.x86_64.rpm

samba-libs-4.4.4-13.el7_3.i686.rpm

samba-libs-4.4.4-13.el7_3.x86_64.rpm

samba-python-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-clients-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-modules-4.4.4-13.el7_3.i686.rpm

samba-winbind-modules-4.4.4-13.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 7):

 

noarch:

samba-pidl-4.4.4-13.el7_3.noarch.rpm

 

x86_64:

libsmbclient-devel-4.4.4-13.el7_3.i686.rpm

libsmbclient-devel-4.4.4-13.el7_3.x86_64.rpm

libwbclient-devel-4.4.4-13.el7_3.i686.rpm

libwbclient-devel-4.4.4-13.el7_3.x86_64.rpm

samba-dc-4.4.4-13.el7_3.x86_64.rpm

samba-dc-libs-4.4.4-13.el7_3.x86_64.rpm

samba-debuginfo-4.4.4-13.el7_3.i686.rpm

samba-debuginfo-4.4.4-13.el7_3.x86_64.rpm

samba-devel-4.4.4-13.el7_3.i686.rpm

samba-devel-4.4.4-13.el7_3.x86_64.rpm

samba-test-4.4.4-13.el7_3.x86_64.rpm

samba-test-libs-4.4.4-13.el7_3.i686.rpm

samba-test-libs-4.4.4-13.el7_3.x86_64.rpm

samba-vfs-glusterfs-4.4.4-13.el7_3.x86_64.rpm

samba-winbind-krb5-locator-4.4.4-13.el7_3.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-2016-2125

https://access.redhat.com/security/cve/CVE-2016-2126

https://access.redhat.com/security/cve/CVE-2017-2619

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 2017 Red Hat, Inc.

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Version: GnuPG v1

 

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--

 

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