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______________________________________________________________________________
SUSE Security Announcement
Package: samba
Announcement-ID: SUSE-SA:2004:035
Date: Tuesday, Oct 5th 2004 16:53:01 MEST
Affected products: 8.1, 8.2, 9.0
SUSE Linux Enterprise Server 8
SUSE Linux Desktop 1.0
Vulnerability Type: remote file disclosure
Severity (1-10): 6
SUSE default package: Yes
Cross References: CAN-2004-0815
Content of this advisory:
1) security vulnerability resolved:
- Samba file access problem
problem description
2) solution/workaround
3) special instructions and notes
4) package location and checksums
5) pending vulnerabilities, solutions, workarounds:
- opera
- kernel
- mozilla
6) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion
The Samba server, which allows to share files and resources via
the SMB/CIFS protocol, contains a bug in the sanitation code of path
names which allows remote attackers to access files outside of the
defined share. In order to access these files, they must be readable
by the account used for the SMB session.
CAN-2004-0815 has been assigned to this issue.
2) solution/workaround
As a temporary workaround you can set the
wide links = no
option in smb.conf and restart the samba server. However an update
is recommended nevertheless.
3) special instructions and notes
After successfully updating the samba package, you need to issue the
following command as root:
rcsmb restart
4) package location and checksums
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/samba-2.2.8a-226.i586.rpm
eb71869029b35d2a97d55e26514524db
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/samba-2.2.8a-226.i586.patch.rpm
48bb3e455079fcfdf4ad2baa28f28557
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/samba-2.2.8a-226.src.rpm
d162ea5a39b14ee16ae1c6d5df9211bb
SUSE Linux 8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/samba-2.2.8a-225.i586.rpm
79b0514a827bdd782e6d3f62bb92fb85
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/samba-2.2.8a-225.i586.patch.rpm
a50dd448212245d51e9ac59ae50514e8
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/samba-2.2.8a-225.src.rpm
25d488678b607b3c67612ee065abd77a
SUSE Linux 8.1:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-2.2.8a-224.i586.rpm
93d0fb2502f30593548dbe2f41ec8948
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-2.2.8a-224.i586.patch.rpm
da5b107fb71c5daf5972b6e0aaca4f5c
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/samba-2.2.8a-224.src.rpm
e0b9f9af6c5348cb9840b5d98a1c59dc
x86-64 Platform:
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/samba-2.2.8a-226.x86_64.rpm
0f1c94aa23653b0cf9b318646d9153af
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/samba-2.2.8a-226.x86_64.patch.rpm
569974c359702c263b0968ce8fb9810f
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/samba-2.2.8a-226.src.rpm
75c1a01d03af42835809691840eaa331
______________________________________________________________________________
5) Pending vulnerabilities in SUSE Distributions and Workarounds:
- opera
New opera packages are available on our ftp servers, fixing
CAN-2004-0691, CAN-2004-0597, CAN-2004-0598, CAN-2004-0599 and
CAN-2004-0746.
- kernel
Update kernels for the kNFSd problem for SLES 8 and SL 8.1 have been
released.
- mozilla
We are in the process of releasing updates for mozilla (and related
browsers), fixing various issues: CAN-2004-0597, CAN-2004-0718,
CAN-2004-0722, CAN-2004-0757, CAN-2004-0758, CAN-2004-0759,
CAN-2004-0760, CAN-2004-0761, CAN-2004-0762, CAN-2004-0763,
CAN-2004-0764 and CAN-2004-0765.
We will give you concrete details in a separate mozilla advisory when
the updates are available.
______________________________________________________________________________
6) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. There are two verification methods that can be used
independently from each other to prove the authenticity of a downloaded
file or rpm package:
1) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.
1) execute the command
md5sum
after you downloaded the file from a SUSE ftp server or its mirrors.
Then, compare the resulting md5sum with the one that is listed in the
announcement. Since the announcement containing the checksums is
cryptographically signed (usually using the key security@suse.de),
the checksums show proof of the authenticity of the package.
We disrecommend to subscribe to security lists which cause the
email message containing the announcement to be modified so that
the signature does not match after transport through the mailing
list software.
Downsides: You must be able to verify the authenticity of the
announcement in the first place. If RPM packages are being rebuilt
and a new version of a package is published on the ftp server, all
md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity
of an rpm package. Use the command
rpm -v --checksig
to verify the signature of the package, where is the
filename of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an un-installed rpm
package file.
Prerequisites:
a) gpg is installed
b) The package is signed using a certain key. The public part of this
key must be installed by the gpg program in the directory
~/.gnupg/ under the user's home directory who performs the
signature verification (usually root). You can import the key
that is used by SUSE in rpm packages for SUSE Linux by saving
this announcement to a file ("announcement.txt") and
running the command (do "su -" to be root):
gpg --batch; gpg < announcement.txt | gpg --import
SUSE Linux distributions version 7.1 and thereafter install the
key "build@suse.de" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the top-level directory of the first CD (pubring.gpg)
and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SUSE runs two security mailing lists to which any interested party may
subscribe:
suse-security@suse.com
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
.
suse-security-announce@suse.com
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an email to
.
For general information or the frequently asked questions (faq)
send mail to:
or
respectively.
=====================================================================
SUSE's security contact is or .
The public key is listed below.
=====================================================================
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular,
it is desired that the clear-text signature shows proof of the
authenticity of the text.
SUSE Linux AG makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key
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