Sigurnosni nedostaci programskog paketa samba

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Red Hat Security Advisory

Synopsis: Moderate: samba and samba3x security update
Advisory ID: RHSA-2014:0866-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0866.html
Issue date: 2014-07-09
CVE Names: CVE-2014-0244 CVE-2014-3493
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1. Summary:

Updated samba3x and samba packages that fix two security issues are now
available for Red Hat Enterprise Linux 5 and 6 respectively.

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 (v. 5 server) – i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) – i386, 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)

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-2014-3493.
The Samba project acknowledges 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/articles/11258

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

1097815 – CVE-2014-0244 samba: nmbd denial of service
1108748 – CVE-2014-3493 samba: smbd unicode path names denial of service

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
samba3x-3.6.6-0.140.el5_10.src.rpm

i386:
samba3x-3.6.6-0.140.el5_10.i386.rpm
samba3x-client-3.6.6-0.140.el5_10.i386.rpm
samba3x-common-3.6.6-0.140.el5_10.i386.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.i386.rpm
samba3x-doc-3.6.6-0.140.el5_10.i386.rpm
samba3x-domainjoin-gui-3.6.6-0.140.el5_10.i386.rpm
samba3x-swat-3.6.6-0.140.el5_10.i386.rpm
samba3x-winbind-3.6.6-0.140.el5_10.i386.rpm

x86_64:
samba3x-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-client-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-common-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.i386.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-doc-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-domainjoin-gui-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-swat-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-winbind-3.6.6-0.140.el5_10.i386.rpm
samba3x-winbind-3.6.6-0.140.el5_10.x86_64.rpm

Red Hat Enterprise Linux Desktop Workstation (v. 5 client):

Source:
samba3x-3.6.6-0.140.el5_10.src.rpm

i386:
samba3x-debuginfo-3.6.6-0.140.el5_10.i386.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.i386.rpm

x86_64:
samba3x-debuginfo-3.6.6-0.140.el5_10.i386.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.x86_64.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.i386.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
samba3x-3.6.6-0.140.el5_10.src.rpm

ia64:
samba3x-3.6.6-0.140.el5_10.ia64.rpm
samba3x-client-3.6.6-0.140.el5_10.ia64.rpm
samba3x-common-3.6.6-0.140.el5_10.ia64.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.ia64.rpm
samba3x-doc-3.6.6-0.140.el5_10.ia64.rpm
samba3x-domainjoin-gui-3.6.6-0.140.el5_10.ia64.rpm
samba3x-swat-3.6.6-0.140.el5_10.ia64.rpm
samba3x-winbind-3.6.6-0.140.el5_10.ia64.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.ia64.rpm

ppc:
samba3x-3.6.6-0.140.el5_10.ppc.rpm
samba3x-client-3.6.6-0.140.el5_10.ppc.rpm
samba3x-common-3.6.6-0.140.el5_10.ppc.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.ppc.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.ppc64.rpm
samba3x-doc-3.6.6-0.140.el5_10.ppc.rpm
samba3x-domainjoin-gui-3.6.6-0.140.el5_10.ppc.rpm
samba3x-swat-3.6.6-0.140.el5_10.ppc.rpm
samba3x-winbind-3.6.6-0.140.el5_10.ppc.rpm
samba3x-winbind-3.6.6-0.140.el5_10.ppc64.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.ppc.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.ppc64.rpm

s390x:
samba3x-3.6.6-0.140.el5_10.s390x.rpm
samba3x-client-3.6.6-0.140.el5_10.s390x.rpm
samba3x-common-3.6.6-0.140.el5_10.s390x.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.s390.rpm
samba3x-debuginfo-3.6.6-0.140.el5_10.s390x.rpm
samba3x-doc-3.6.6-0.140.el5_10.s390x.rpm
samba3x-domainjoin-gui-3.6.6-0.140.el5_10.s390x.rpm
samba3x-swat-3.6.6-0.140.el5_10.s390x.rpm
samba3x-winbind-3.6.6-0.140.el5_10.s390.rpm
samba3x-winbind-3.6.6-0.140.el5_10.s390x.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.s390.rpm
samba3x-winbind-devel-3.6.6-0.140.el5_10.s390x.rpm

Red Hat Enterprise Linux Desktop (v. 6):