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Sicherheit: SUSE Security Summary Report
Aktuelle Meldungen Distributionen
Name: SUSE Security Summary Report
ID: SUSE-SR:2005:005
Distribution: SUSE
Plattformen: Keine Angabe
Datum: Fr, 18. Februar 2005, 12:00
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0190
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1184
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1185
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1186
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0089
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0227
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0372
Applikationen: SUSE

Originalnachricht

-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________

SUSE Security Summary Report

Announcement-ID: SUSE-SR:2005:005
Date: Friday, Feb 18th 2005 18:00 MEST
Cross References: CAN-2004-1184
CAN-2004-1185
CAN-2004-1186
CAN-2005-0089
CAN-2005-0227
CAN-2005-0372
CAN-2003-0190

Content of this advisory:
1) solved security vulnerabilities:
- multiple enscript problems
- clamav update to 0.82
- postgresql LOAD vulnerability
- python: SimpleXMLRPCServer flaw
- openssh information leak
- gftp directory traversal
- openldap2 denial of service

2) pending vulnerabilities, solutions, workarounds:
- problems with kernel update for SUSE Linux 9.1
- IDN cloaking problems with all browsers
- multiple wget problems
- new PostgreSQL problems
- New kernel security problems

3) standard appendix (further information)

______________________________________________________________________________

1) solved security vulnerabilities

To avoid spamming lists with advisories for every small incident,
we will release weekly summary advisories for issues where we have
released updates without a full advisory. Since these are minor
issues, md5sums and ftp URLs are not included.

Fixed packages for the following incidents are already available on
our FTP server and via the YaST Online Update.


- Multiple enscript problems

The text to postscript converter enscript has several security
related problems, relating to input validation (CAN-2004-1184),
missing sanitizing of filenames (CAN-2004-1185) and multiple
buffer overflows (CAN-2004-1186).

All SUSE Linux based products were affected.


- clamav update to 0.82

The clamav virus scanner software was updated to 0.82, featuring
several scan engine improvements, especially for strangely formatted
mails.

SUSE Linux versions 9.1 and 9.2, and SUSE Linux Enterprise Server 9
were affected.


- postgresql LOAD vulnerability

A vulnerability in the PostgreSQL 'LOAD' statement was fixed.
This issue is tracked by the Mitre CVE ID CAN-2005-0227.

All SUSE Linux based products were affected.


- python: SimpleXMLRPCServer flaw

This update fixes a bug in the SimpleXMLRPCServer which
affects any program which allows remote untrusted users to
do unrestricted traversal. The vulnerability can be used to
access and change internal functions. This is tracked by the
Mitre CVE ID CAN-2005-0089.

All SUSE Linux based products were affected.


- openssh information leak

Openssh as shipped with SUSE Linux allows a possible timing
attack that could be abused remotely to determine existing users
on the system by watching replies to failed password attempts.

This is tracked by the Mitre CVE ID CAN-2003-0190.

Additionally the output of failing PAM sessions will now be
displayed and the terminal-setting for aborted login-sessions
will get restored correctly.

This bugfix was released for SUSE Linux 9.1, 9.2 and SUSE Linux
Enterprise Server 9.


- gftp directory traversal

Improper handling of filenames containing slashes allowed a
malicious ftp server to overwrite files in the system if the
user used gftp. This is tracked by the Mitre CVE ID
CAN-2005-0372.

SUSE Linux 9.1, 9.2 and Novell Linux Desktop 9 were affected.


- openldap2 denial of service

It was possible for a remote attacker to crash the openldap2
slapd LDAP server daemon by sending special query strings.
(No Mitre CVE ID was assigned to this issue, it is backport
from an upstream fix.)

Additionally this update fixes several bugs spotted during
Open Enterprise Server testing.

All SUSE Linux based products were affected.

______________________________________________________________________________

2) Pending vulnerabilities in SUSE Distributions and Workarounds:

- problems with kernel update for SUSE Linux 9.1

Several users of NVidia cards reported problems with the last SUSE
Linux 9.1 kernel update, leaving the screen black and the machine
hung after reboot.

We are working on a fix for this problem.

Up to then you can either use an older 9.1 kernel, or
compile the Nvidia driver for your own.


- multiple wget problems

We have still no solution for the wget issues as reported on Bugtraq:
http://www.securityfocus.com/archive/1/383998


- IDN (Internationalized Domain Name) cloaking / homograph attacks

Problems with the IDN / punycode handling that allows non-ASCII
domain names were reported for every browser.

We are aware of these issues and expect a good solution soon.

- new PostgreSQL problems

Additional PostgreSQL problems were reported:
- A local user could bypass the EXECUTE permission check for
functions by using the CREATE AGGREGATE command. CAN-2005-0244

- Multiple buffer overflows were found in PL/PgSQL. CAN-2005-0245,
CAN-2005-0247

- A flaw in contrib/intagg CAN-2005-0246

We are working on updates for this problem.


- New kernel security problems

New kernel security problems in regards to signedness issues have
been spotted by Georgi Guninski.

We are working on updates for this problems.

______________________________________________________________________________

3) 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 <name-of-the-file.rpm>
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 recommend against subscribing to security lists that cause the
e-mail 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 <file.rpm>
to verify the signature of the package, where <file.rpm> is the
file name of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an uninstalled 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-subscribe@suse.com>.

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
<suse-security-announce-subscribe@suse.com>.

For general information or the frequently asked questions (FAQ)
send mail to:
<suse-security-info@suse.com> or
<suse-security-faq@suse.com> respectively.

=====================================================================
SUSE's security contact is <security@suse.com> or
<security@suse.de>.
The <security@suse.de> 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 <security@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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