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Red Hat Security Advisory 2014-0867-01

Red Hat Security Advisory 2014-0867-01
Posted Jul 9, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-0867-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A denial of service flaw was found in the way the sys_recvfile() function of nmbd, the NetBIOS message block daemon, processed non-blocking sockets. An attacker could send a specially crafted packet that, when processed, would cause nmbd to enter an infinite loop and consume an excessive amount of CPU time. A flaw was found in the way Samba created responses for certain authenticated client requests when a shadow-copy VFS module was enabled. An attacker able to send an authenticated request could use this flaw to disclose limited portions of memory per each request.

tags | advisory, denial of service, protocol
systems | linux, redhat
advisories | CVE-2014-0178, CVE-2014-0244, CVE-2014-3493
MD5 | 15c10c66152e03f16c45fe3351c124d5

Red Hat Security Advisory 2014-0867-01

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

Synopsis: Moderate: samba security update
Advisory ID: RHSA-2014:0867-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0867.html
Issue date: 2014-07-09
CVE Names: CVE-2014-0178 CVE-2014-0244 CVE-2014-3493
=====================================================================

1. Summary:

Updated samba packages that fix three security issues are now available for
Red Hat Enterprise Linux 7.

The Red Hat Security Response Team has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Samba is an open-source implementation of the Server Message Block (SMB) or
Common Internet File System (CIFS) protocol, which allows PC-compatible
machines to share files, printers, and other information.

A denial of service flaw was found in the way the sys_recvfile() function
of nmbd, the NetBIOS message block daemon, processed non-blocking sockets.
An attacker could send a specially crafted packet that, when processed,
would cause nmbd to enter an infinite loop and consume an excessive amount
of CPU time. (CVE-2014-0244)

A flaw was found in the way Samba created responses for certain
authenticated client requests when a shadow-copy VFS module was enabled.
An attacker able to send an authenticated request could use this flaw to
disclose limited portions of memory per each request. (CVE-2014-0178)

It was discovered that smbd, the Samba file server daemon, did not properly
handle certain files that were stored on the disk and used a valid Unicode
character in the file name. An attacker able to send an authenticated
non-Unicode request that attempted to read such a file could cause smbd to
crash. (CVE-2014-3493)

Red Hat would like to thank Daniel Berteaud of FIREWALL-SERVICES SARL for
reporting CVE-2014-0244, and the Samba project for reporting CVE-2014-0178
and CVE-2014-3493. The Samba project acknowledges Christof Schmitt as the
original reporter of CVE-2014-0178, and Simon Arlott as the original
reporter of CVE-2014-3493.

All Samba users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing this
update, the smb service will be restarted automatically.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

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

1097815 - CVE-2014-0244 samba: nmbd denial of service
1101992 - CVE-2014-0178 samba: Uninitialized memory exposure
1108748 - CVE-2014-3493 samba: smbd unicode path names denial of service

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
samba-4.1.1-35.el7_0.src.rpm

x86_64:
libsmbclient-4.1.1-35.el7_0.i686.rpm
libsmbclient-4.1.1-35.el7_0.x86_64.rpm
libwbclient-4.1.1-35.el7_0.i686.rpm
libwbclient-4.1.1-35.el7_0.x86_64.rpm
samba-client-4.1.1-35.el7_0.x86_64.rpm
samba-common-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-libs-4.1.1-35.el7_0.i686.rpm
samba-libs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-modules-4.1.1-35.el7_0.i686.rpm
samba-winbind-modules-4.1.1-35.el7_0.x86_64.rpm

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

x86_64:
libsmbclient-devel-4.1.1-35.el7_0.i686.rpm
libsmbclient-devel-4.1.1-35.el7_0.x86_64.rpm
libwbclient-devel-4.1.1-35.el7_0.i686.rpm
libwbclient-devel-4.1.1-35.el7_0.x86_64.rpm
samba-4.1.1-35.el7_0.x86_64.rpm
samba-dc-4.1.1-35.el7_0.x86_64.rpm
samba-dc-libs-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-devel-4.1.1-35.el7_0.i686.rpm
samba-devel-4.1.1-35.el7_0.x86_64.rpm
samba-pidl-4.1.1-35.el7_0.x86_64.rpm
samba-python-4.1.1-35.el7_0.x86_64.rpm
samba-test-4.1.1-35.el7_0.x86_64.rpm
samba-test-devel-4.1.1-35.el7_0.x86_64.rpm
samba-vfs-glusterfs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-clients-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
samba-4.1.1-35.el7_0.src.rpm

x86_64:
libsmbclient-4.1.1-35.el7_0.i686.rpm
libsmbclient-4.1.1-35.el7_0.x86_64.rpm
libwbclient-4.1.1-35.el7_0.i686.rpm
libwbclient-4.1.1-35.el7_0.x86_64.rpm
samba-client-4.1.1-35.el7_0.x86_64.rpm
samba-common-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-libs-4.1.1-35.el7_0.i686.rpm
samba-libs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-modules-4.1.1-35.el7_0.i686.rpm
samba-winbind-modules-4.1.1-35.el7_0.x86_64.rpm

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

x86_64:
libsmbclient-devel-4.1.1-35.el7_0.i686.rpm
libsmbclient-devel-4.1.1-35.el7_0.x86_64.rpm
libwbclient-devel-4.1.1-35.el7_0.i686.rpm
libwbclient-devel-4.1.1-35.el7_0.x86_64.rpm
samba-4.1.1-35.el7_0.x86_64.rpm
samba-dc-4.1.1-35.el7_0.x86_64.rpm
samba-dc-libs-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-devel-4.1.1-35.el7_0.i686.rpm
samba-devel-4.1.1-35.el7_0.x86_64.rpm
samba-pidl-4.1.1-35.el7_0.x86_64.rpm
samba-python-4.1.1-35.el7_0.x86_64.rpm
samba-test-4.1.1-35.el7_0.x86_64.rpm
samba-test-devel-4.1.1-35.el7_0.x86_64.rpm
samba-vfs-glusterfs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-clients-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
samba-4.1.1-35.el7_0.src.rpm

ppc64:
libsmbclient-4.1.1-35.el7_0.ppc.rpm
libsmbclient-4.1.1-35.el7_0.ppc64.rpm
libwbclient-4.1.1-35.el7_0.ppc.rpm
libwbclient-4.1.1-35.el7_0.ppc64.rpm
samba-4.1.1-35.el7_0.ppc64.rpm
samba-client-4.1.1-35.el7_0.ppc64.rpm
samba-common-4.1.1-35.el7_0.ppc64.rpm
samba-debuginfo-4.1.1-35.el7_0.ppc.rpm
samba-debuginfo-4.1.1-35.el7_0.ppc64.rpm
samba-libs-4.1.1-35.el7_0.ppc.rpm
samba-libs-4.1.1-35.el7_0.ppc64.rpm
samba-winbind-4.1.1-35.el7_0.ppc64.rpm
samba-winbind-modules-4.1.1-35.el7_0.ppc.rpm
samba-winbind-modules-4.1.1-35.el7_0.ppc64.rpm

s390x:
libsmbclient-4.1.1-35.el7_0.s390.rpm
libsmbclient-4.1.1-35.el7_0.s390x.rpm
libwbclient-4.1.1-35.el7_0.s390.rpm
libwbclient-4.1.1-35.el7_0.s390x.rpm
samba-4.1.1-35.el7_0.s390x.rpm
samba-client-4.1.1-35.el7_0.s390x.rpm
samba-common-4.1.1-35.el7_0.s390x.rpm
samba-debuginfo-4.1.1-35.el7_0.s390.rpm
samba-debuginfo-4.1.1-35.el7_0.s390x.rpm
samba-libs-4.1.1-35.el7_0.s390.rpm
samba-libs-4.1.1-35.el7_0.s390x.rpm
samba-winbind-4.1.1-35.el7_0.s390x.rpm
samba-winbind-modules-4.1.1-35.el7_0.s390.rpm
samba-winbind-modules-4.1.1-35.el7_0.s390x.rpm

x86_64:
libsmbclient-4.1.1-35.el7_0.i686.rpm
libsmbclient-4.1.1-35.el7_0.x86_64.rpm
libwbclient-4.1.1-35.el7_0.i686.rpm
libwbclient-4.1.1-35.el7_0.x86_64.rpm
samba-4.1.1-35.el7_0.x86_64.rpm
samba-client-4.1.1-35.el7_0.x86_64.rpm
samba-common-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-libs-4.1.1-35.el7_0.i686.rpm
samba-libs-4.1.1-35.el7_0.x86_64.rpm
samba-python-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-modules-4.1.1-35.el7_0.i686.rpm
samba-winbind-modules-4.1.1-35.el7_0.x86_64.rpm

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

ppc64:
libsmbclient-devel-4.1.1-35.el7_0.ppc.rpm
libsmbclient-devel-4.1.1-35.el7_0.ppc64.rpm
libwbclient-devel-4.1.1-35.el7_0.ppc.rpm
libwbclient-devel-4.1.1-35.el7_0.ppc64.rpm
samba-dc-4.1.1-35.el7_0.ppc64.rpm
samba-dc-libs-4.1.1-35.el7_0.ppc64.rpm
samba-debuginfo-4.1.1-35.el7_0.ppc.rpm
samba-debuginfo-4.1.1-35.el7_0.ppc64.rpm
samba-devel-4.1.1-35.el7_0.ppc.rpm
samba-devel-4.1.1-35.el7_0.ppc64.rpm
samba-pidl-4.1.1-35.el7_0.ppc64.rpm
samba-python-4.1.1-35.el7_0.ppc64.rpm
samba-test-4.1.1-35.el7_0.ppc64.rpm
samba-test-devel-4.1.1-35.el7_0.ppc64.rpm
samba-winbind-clients-4.1.1-35.el7_0.ppc64.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.ppc64.rpm

s390x:
libsmbclient-devel-4.1.1-35.el7_0.s390.rpm
libsmbclient-devel-4.1.1-35.el7_0.s390x.rpm
libwbclient-devel-4.1.1-35.el7_0.s390.rpm
libwbclient-devel-4.1.1-35.el7_0.s390x.rpm
samba-dc-4.1.1-35.el7_0.s390x.rpm
samba-dc-libs-4.1.1-35.el7_0.s390x.rpm
samba-debuginfo-4.1.1-35.el7_0.s390.rpm
samba-debuginfo-4.1.1-35.el7_0.s390x.rpm
samba-devel-4.1.1-35.el7_0.s390.rpm
samba-devel-4.1.1-35.el7_0.s390x.rpm
samba-pidl-4.1.1-35.el7_0.s390x.rpm
samba-python-4.1.1-35.el7_0.s390x.rpm
samba-test-4.1.1-35.el7_0.s390x.rpm
samba-test-devel-4.1.1-35.el7_0.s390x.rpm
samba-winbind-clients-4.1.1-35.el7_0.s390x.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.s390x.rpm

x86_64:
libsmbclient-devel-4.1.1-35.el7_0.i686.rpm
libsmbclient-devel-4.1.1-35.el7_0.x86_64.rpm
libwbclient-devel-4.1.1-35.el7_0.i686.rpm
libwbclient-devel-4.1.1-35.el7_0.x86_64.rpm
samba-dc-4.1.1-35.el7_0.x86_64.rpm
samba-dc-libs-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-devel-4.1.1-35.el7_0.i686.rpm
samba-devel-4.1.1-35.el7_0.x86_64.rpm
samba-pidl-4.1.1-35.el7_0.x86_64.rpm
samba-test-4.1.1-35.el7_0.x86_64.rpm
samba-test-devel-4.1.1-35.el7_0.x86_64.rpm
samba-vfs-glusterfs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-clients-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
samba-4.1.1-35.el7_0.src.rpm

x86_64:
libsmbclient-4.1.1-35.el7_0.i686.rpm
libsmbclient-4.1.1-35.el7_0.x86_64.rpm
libwbclient-4.1.1-35.el7_0.i686.rpm
libwbclient-4.1.1-35.el7_0.x86_64.rpm
samba-4.1.1-35.el7_0.x86_64.rpm
samba-client-4.1.1-35.el7_0.x86_64.rpm
samba-common-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-libs-4.1.1-35.el7_0.i686.rpm
samba-libs-4.1.1-35.el7_0.x86_64.rpm
samba-python-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-modules-4.1.1-35.el7_0.i686.rpm
samba-winbind-modules-4.1.1-35.el7_0.x86_64.rpm

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

x86_64:
libsmbclient-devel-4.1.1-35.el7_0.i686.rpm
libsmbclient-devel-4.1.1-35.el7_0.x86_64.rpm
libwbclient-devel-4.1.1-35.el7_0.i686.rpm
libwbclient-devel-4.1.1-35.el7_0.x86_64.rpm
samba-dc-4.1.1-35.el7_0.x86_64.rpm
samba-dc-libs-4.1.1-35.el7_0.x86_64.rpm
samba-debuginfo-4.1.1-35.el7_0.i686.rpm
samba-debuginfo-4.1.1-35.el7_0.x86_64.rpm
samba-devel-4.1.1-35.el7_0.i686.rpm
samba-devel-4.1.1-35.el7_0.x86_64.rpm
samba-pidl-4.1.1-35.el7_0.x86_64.rpm
samba-test-4.1.1-35.el7_0.x86_64.rpm
samba-test-devel-4.1.1-35.el7_0.x86_64.rpm
samba-vfs-glusterfs-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-clients-4.1.1-35.el7_0.x86_64.rpm
samba-winbind-krb5-locator-4.1.1-35.el7_0.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/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2014-0178.html
https://www.redhat.com/security/data/cve/CVE-2014-0244.html
https://www.redhat.com/security/data/cve/CVE-2014-3493.html
https://access.redhat.com/security/updates/classification/#moderate
https://www.samba.org/samba/security/CVE-2014-0244
https://www.samba.org/samba/security/CVE-2014-0178
https://www.samba.org/samba/security/CVE-2014-3493

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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