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Red Hat Security Advisory 2011-1219-01

Red Hat Security Advisory 2011-1219-01
Posted Aug 29, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1219-01 - Samba is a suite of programs used by machines to share files, printers, and other information. A cross-site scripting flaw was found in the password change page of the Samba Web Administration Tool. 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. It was found that SWAT web pages did not protect against Cross-Site Request Forgery 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.

tags | advisory, remote, web, arbitrary, xss, csrf
systems | linux, redhat
advisories | CVE-2010-0547, CVE-2010-0787, CVE-2011-1678, CVE-2011-2522, CVE-2011-2694
MD5 | 7de3468a79b05efbb20097b9feb2dc7f

Red Hat Security Advisory 2011-1219-01

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

Synopsis: Moderate: samba security update
Advisory ID: RHSA-2011:1219-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1219.html
Issue date: 2011-08-29
CVE Names: CVE-2010-0547 CVE-2010-0787 CVE-2011-1678
CVE-2011-2522 CVE-2011-2694
=====================================================================

1. Summary:

Updated samba packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 4 and 5.

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:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

Samba is a suite of programs used by machines to share files, printers, and
other information.

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)

A race condition flaw was found in the way the mount.cifs tool mounted CIFS
(Common Internet File System) shares. If mount.cifs had the setuid bit set,
a local attacker could conduct a symbolic link attack to trick mount.cifs
into mounting a share over an arbitrary directory they were otherwise not
allowed to mount to, possibly allowing them to escalate their privileges.
(CVE-2010-0787)

It was found that the mount.cifs tool did not properly handle share or
directory names containing a newline character. If mount.cifs had the
setuid bit set, a local attacker could corrupt the mtab (mounted file
systems table) file via a specially-crafted CIFS share mount request.
(CVE-2010-0547)

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 samba packages 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; the Debian Security Team for reporting CVE-2010-0787;
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; Yoshihiro Ishikawa of LAC Co., Ltd. as the original reporter
of CVE-2011-2522; and the Debian Security Team acknowledges Ronald Volgers
as the original reporter of CVE-2010-0787.

Users of Samba 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/):

562156 - CVE-2010-0547 samba: mount.cifs improper device name and mountpoint strings sanitization
577277 - CVE-2010-0787 samba: Race condition by mount (mount.cifs) operations
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

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/samba-3.0.33-0.34.el4.src.rpm

i386:
samba-3.0.33-0.34.el4.i386.rpm
samba-client-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-swat-3.0.33-0.34.el4.i386.rpm

ia64:
samba-3.0.33-0.34.el4.ia64.rpm
samba-client-3.0.33-0.34.el4.ia64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.ia64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.ia64.rpm
samba-swat-3.0.33-0.34.el4.ia64.rpm

ppc:
samba-3.0.33-0.34.el4.ppc.rpm
samba-client-3.0.33-0.34.el4.ppc.rpm
samba-common-3.0.33-0.34.el4.ppc.rpm
samba-common-3.0.33-0.34.el4.ppc64.rpm
samba-debuginfo-3.0.33-0.34.el4.ppc.rpm
samba-debuginfo-3.0.33-0.34.el4.ppc64.rpm
samba-swat-3.0.33-0.34.el4.ppc.rpm

s390:
samba-3.0.33-0.34.el4.s390.rpm
samba-client-3.0.33-0.34.el4.s390.rpm
samba-common-3.0.33-0.34.el4.s390.rpm
samba-debuginfo-3.0.33-0.34.el4.s390.rpm
samba-swat-3.0.33-0.34.el4.s390.rpm

s390x:
samba-3.0.33-0.34.el4.s390x.rpm
samba-client-3.0.33-0.34.el4.s390x.rpm
samba-common-3.0.33-0.34.el4.s390.rpm
samba-common-3.0.33-0.34.el4.s390x.rpm
samba-debuginfo-3.0.33-0.34.el4.s390.rpm
samba-debuginfo-3.0.33-0.34.el4.s390x.rpm
samba-swat-3.0.33-0.34.el4.s390x.rpm

x86_64:
samba-3.0.33-0.34.el4.x86_64.rpm
samba-client-3.0.33-0.34.el4.x86_64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.x86_64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.x86_64.rpm
samba-swat-3.0.33-0.34.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/samba-3.0.33-0.34.el4.src.rpm

i386:
samba-3.0.33-0.34.el4.i386.rpm
samba-client-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-swat-3.0.33-0.34.el4.i386.rpm

x86_64:
samba-3.0.33-0.34.el4.x86_64.rpm
samba-client-3.0.33-0.34.el4.x86_64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.x86_64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.x86_64.rpm
samba-swat-3.0.33-0.34.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/samba-3.0.33-0.34.el4.src.rpm

i386:
samba-3.0.33-0.34.el4.i386.rpm
samba-client-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-swat-3.0.33-0.34.el4.i386.rpm

ia64:
samba-3.0.33-0.34.el4.ia64.rpm
samba-client-3.0.33-0.34.el4.ia64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.ia64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.ia64.rpm
samba-swat-3.0.33-0.34.el4.ia64.rpm

x86_64:
samba-3.0.33-0.34.el4.x86_64.rpm
samba-client-3.0.33-0.34.el4.x86_64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.x86_64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.x86_64.rpm
samba-swat-3.0.33-0.34.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/samba-3.0.33-0.34.el4.src.rpm

i386:
samba-3.0.33-0.34.el4.i386.rpm
samba-client-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-swat-3.0.33-0.34.el4.i386.rpm

ia64:
samba-3.0.33-0.34.el4.ia64.rpm
samba-client-3.0.33-0.34.el4.ia64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.ia64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.ia64.rpm
samba-swat-3.0.33-0.34.el4.ia64.rpm

x86_64:
samba-3.0.33-0.34.el4.x86_64.rpm
samba-client-3.0.33-0.34.el4.x86_64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.x86_64.rpm
samba-debuginfo-3.0.33-0.34.el4.i386.rpm
samba-debuginfo-3.0.33-0.34.el4.x86_64.rpm
samba-swat-3.0.33-0.34.el4.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/samba-3.0.33-3.29.el5_7.4.src.rpm

i386:
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
samba-3.0.33-3.29.el5_7.4.i386.rpm
samba-client-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm
samba-swat-3.0.33-3.29.el5_7.4.i386.rpm

x86_64:
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-client-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-swat-3.0.33-3.29.el5_7.4.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/samba-3.0.33-3.29.el5_7.4.src.rpm

i386:
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm

x86_64:
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/samba-3.0.33-3.29.el5_7.4.src.rpm

i386:
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
samba-3.0.33-3.29.el5_7.4.i386.rpm
samba-client-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm
samba-swat-3.0.33-3.29.el5_7.4.i386.rpm

ia64:
libsmbclient-3.0.33-3.29.el5_7.4.ia64.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.ia64.rpm
samba-3.0.33-3.29.el5_7.4.ia64.rpm
samba-client-3.0.33-3.29.el5_7.4.ia64.rpm
samba-common-3.0.33-3.29.el5_7.4.ia64.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.ia64.rpm
samba-swat-3.0.33-3.29.el5_7.4.ia64.rpm

ppc:
libsmbclient-3.0.33-3.29.el5_7.4.ppc.rpm
libsmbclient-3.0.33-3.29.el5_7.4.ppc64.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.ppc.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.ppc64.rpm
samba-3.0.33-3.29.el5_7.4.ppc.rpm
samba-client-3.0.33-3.29.el5_7.4.ppc.rpm
samba-common-3.0.33-3.29.el5_7.4.ppc.rpm
samba-common-3.0.33-3.29.el5_7.4.ppc64.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.ppc.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.ppc64.rpm
samba-swat-3.0.33-3.29.el5_7.4.ppc.rpm

s390x:
libsmbclient-3.0.33-3.29.el5_7.4.s390.rpm
libsmbclient-3.0.33-3.29.el5_7.4.s390x.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.s390.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.s390x.rpm
samba-3.0.33-3.29.el5_7.4.s390x.rpm
samba-client-3.0.33-3.29.el5_7.4.s390x.rpm
samba-common-3.0.33-3.29.el5_7.4.s390.rpm
samba-common-3.0.33-3.29.el5_7.4.s390x.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.s390.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.s390x.rpm
samba-swat-3.0.33-3.29.el5_7.4.s390x.rpm

x86_64:
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-3.0.33-3.29.el5_7.4.x86_64.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-client-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.i386.rpm
samba-debuginfo-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-swat-3.0.33-3.29.el5_7.4.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-2010-0547.html
https://www.redhat.com/security/data/cve/CVE-2010-0787.html
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://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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