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08-29-2011 05:49 PM

Moderate: samba and cifs-utils security and bug fix update
 
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================================================== ===================
Red Hat Security Advisory

Synopsis: Moderate: samba and cifs-utils security and bug fix update
Advisory ID: RHSA-2011:1221-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1221.html
Issue date: 2011-08-29
CVE Names: CVE-2011-1678 CVE-2011-2522 CVE-2011-2694
CVE-2011-2724
================================================== ===================

1. Summary:

Updated samba and cifs-utils packages that fix multiple security issues and
one bug are now available for Red Hat Enterprise Linux 6.

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 Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - 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 a suite of programs used by machines to share files, printers, and
other information. The cifs-utils package contains utilities for mounting
and managing CIFS (Common Internet File System) shares.

A cross-site scripting (XSS) flaw was found in the password change page of
the Samba Web Administration Tool (SWAT). If a remote attacker could trick
a user, who was logged into the SWAT interface, into visiting a
specially-crafted URL, it would lead to arbitrary web script execution in
the context of the user's SWAT session. (CVE-2011-2694)

It was found that SWAT web pages did not protect against Cross-Site
Request Forgery (CSRF) attacks. If a remote attacker could trick a user,
who was logged into the SWAT interface, into visiting a specially-crafted
URL, the attacker could perform Samba configuration changes with the
privileges of the logged in user. (CVE-2011-2522)

It was found that the fix for CVE-2010-0547, provided in the cifs-utils
package included in the GA release of Red Hat Enterprise Linux 6, was
incomplete. The mount.cifs tool did not properly handle share or directory
names containing a newline character, allowing a local attacker to corrupt
the mtab (mounted file systems table) file via a specially-crafted CIFS
share mount request, if mount.cifs had the setuid bit set. (CVE-2011-2724)

It was found that the mount.cifs tool did not handle certain errors
correctly when updating the mtab file. If mount.cifs had the setuid bit
set, a local attacker could corrupt the mtab file by setting a small file
size limit before running mount.cifs. (CVE-2011-1678)

Note: mount.cifs from the cifs-utils package distributed by Red Hat does
not have the setuid bit set. We recommend that administrators do not
manually set the setuid bit for mount.cifs.

Red Hat would like to thank the Samba project for reporting CVE-2011-2694
and CVE-2011-2522, and Dan Rosenberg for reporting CVE-2011-1678. Upstream
acknowledges Nobuhiro Tsuji of NTT DATA Security Corporation as the
original reporter of CVE-2011-2694, and Yoshihiro Ishikawa of LAC Co., Ltd.
as the original reporter of CVE-2011-2522.

This update also fixes the following bug:

* If plain text passwords were used ("encrypt passwords = no" in
"/etc/samba/smb.conf"), Samba clients running the Windows XP or Windows
Server 2003 operating system may not have been able to access Samba shares
after installing the Microsoft Security Bulletin MS11-043. This update
corrects this issue, allowing such clients to use plain text passwords to
access Samba shares. (BZ#728517)

Users of samba and cifs-utils are advised to upgrade to these updated
packages, which contain backported patches to resolve 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/kb/docs/DOC-11259

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

695925 - CVE-2011-1678 samba/cifs-utils: mount.cifs and umount.cifs fail to anticipate RLIMIT_FSIZE
721348 - CVE-2011-2522 samba (SWAT): Absent CSRF protection in various Samba web configuration formulars
722537 - CVE-2011-2694 samba (SWAT): XSS flaw in Change Password page
726691 - CVE-2011-2724 samba, cifs-utils: mount.cifs incorrect fix for CVE-2010-0547
728517 - Windows security patch KB2536276 prevents access to samba shares

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/cifs-utils-4.8.1-2.el6_1.2.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
cifs-utils-4.8.1-2.el6_1.2.i686.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
samba-client-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm

x86_64:
cifs-utils-4.8.1-2.el6_1.2.x86_64.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.x86_64.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.x86_64.rpm
samba-client-3.5.6-86.el6_1.4.x86_64.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
samba-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-doc-3.5.6-86.el6_1.4.i686.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.i686.rpm
samba-swat-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.i686.rpm

x86_64:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-doc-3.5.6-86.el6_1.4.x86_64.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.x86_64.rpm
samba-swat-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/cifs-utils-4.8.1-2.el6_1.2.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

x86_64:
cifs-utils-4.8.1-2.el6_1.2.x86_64.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.x86_64.rpm
samba-client-3.5.6-86.el6_1.4.x86_64.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

x86_64:
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.x86_64.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-doc-3.5.6-86.el6_1.4.x86_64.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.x86_64.rpm
samba-swat-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/cifs-utils-4.8.1-2.el6_1.2.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
cifs-utils-4.8.1-2.el6_1.2.i686.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
samba-3.5.6-86.el6_1.4.i686.rpm
samba-client-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm

ppc64:
cifs-utils-4.8.1-2.el6_1.2.ppc64.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.ppc64.rpm
libsmbclient-3.5.6-86.el6_1.4.ppc.rpm
libsmbclient-3.5.6-86.el6_1.4.ppc64.rpm
samba-3.5.6-86.el6_1.4.ppc64.rpm
samba-client-3.5.6-86.el6_1.4.ppc64.rpm
samba-common-3.5.6-86.el6_1.4.ppc.rpm
samba-common-3.5.6-86.el6_1.4.ppc64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.ppc.rpm
samba-debuginfo-3.5.6-86.el6_1.4.ppc64.rpm
samba-winbind-3.5.6-86.el6_1.4.ppc64.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.ppc.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.ppc64.rpm

s390x:
cifs-utils-4.8.1-2.el6_1.2.s390x.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.s390x.rpm
libsmbclient-3.5.6-86.el6_1.4.s390.rpm
libsmbclient-3.5.6-86.el6_1.4.s390x.rpm
samba-3.5.6-86.el6_1.4.s390x.rpm
samba-client-3.5.6-86.el6_1.4.s390x.rpm
samba-common-3.5.6-86.el6_1.4.s390.rpm
samba-common-3.5.6-86.el6_1.4.s390x.rpm
samba-debuginfo-3.5.6-86.el6_1.4.s390.rpm
samba-debuginfo-3.5.6-86.el6_1.4.s390x.rpm
samba-winbind-3.5.6-86.el6_1.4.s390x.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.s390.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.s390x.rpm

x86_64:
cifs-utils-4.8.1-2.el6_1.2.x86_64.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.x86_64.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.x86_64.rpm
samba-3.5.6-86.el6_1.4.x86_64.rpm
samba-client-3.5.6-86.el6_1.4.x86_64.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-doc-3.5.6-86.el6_1.4.i686.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.i686.rpm
samba-swat-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.i686.rpm

ppc64:
libsmbclient-devel-3.5.6-86.el6_1.4.ppc.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.ppc64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.ppc.rpm
samba-debuginfo-3.5.6-86.el6_1.4.ppc64.rpm
samba-doc-3.5.6-86.el6_1.4.ppc64.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.ppc64.rpm
samba-swat-3.5.6-86.el6_1.4.ppc64.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.ppc.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.ppc64.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.ppc64.rpm

s390x:
libsmbclient-devel-3.5.6-86.el6_1.4.s390.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.s390x.rpm
samba-debuginfo-3.5.6-86.el6_1.4.s390.rpm
samba-debuginfo-3.5.6-86.el6_1.4.s390x.rpm
samba-doc-3.5.6-86.el6_1.4.s390x.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.s390x.rpm
samba-swat-3.5.6-86.el6_1.4.s390x.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.s390.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.s390x.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.s390x.rpm

x86_64:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-doc-3.5.6-86.el6_1.4.x86_64.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.x86_64.rpm
samba-swat-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/cifs-utils-4.8.1-2.el6_1.2.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
cifs-utils-4.8.1-2.el6_1.2.i686.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
samba-3.5.6-86.el6_1.4.i686.rpm
samba-client-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm

x86_64:
cifs-utils-4.8.1-2.el6_1.2.x86_64.rpm
cifs-utils-debuginfo-4.8.1-2.el6_1.2.x86_64.rpm
libsmbclient-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-3.5.6-86.el6_1.4.x86_64.rpm
samba-3.5.6-86.el6_1.4.x86_64.rpm
samba-client-3.5.6-86.el6_1.4.x86_64.rpm
samba-common-3.5.6-86.el6_1.4.i686.rpm
samba-common-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-clients-3.5.6-86.el6_1.4.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/samba-3.5.6-86.el6_1.4.src.rpm

i386:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-doc-3.5.6-86.el6_1.4.i686.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.i686.rpm
samba-swat-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.i686.rpm

x86_64:
libsmbclient-devel-3.5.6-86.el6_1.4.i686.rpm
libsmbclient-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-debuginfo-3.5.6-86.el6_1.4.i686.rpm
samba-debuginfo-3.5.6-86.el6_1.4.x86_64.rpm
samba-doc-3.5.6-86.el6_1.4.x86_64.rpm
samba-domainjoin-gui-3.5.6-86.el6_1.4.x86_64.rpm
samba-swat-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.i686.rpm
samba-winbind-devel-3.5.6-86.el6_1.4.x86_64.rpm
samba-winbind-krb5-locator-3.5.6-86.el6_1.4.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-2011-1678.html
https://www.redhat.com/security/data/cve/CVE-2011-2522.html
https://www.redhat.com/security/data/cve/CVE-2011-2694.html
https://www.redhat.com/security/data/cve/CVE-2011-2724.html
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 2011 Red Hat, Inc.
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