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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 <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2017 Red Hat, Inc.
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