Sicherheit: SUSE Security Summary Report

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______________________________________________________________________________

SUSE Security Summary Report

Announcement ID: SUSE-SR:2008:012
Date: Fri, 06 Jun 2008 16:00:00 +0000
Cross-References: CVE-2008-0073, CVE-2008-1419, CVE-2008-1420
CVE-2008-1423, CVE-2008-1637, CVE-2008-1686
CVE-2008-1878, CVE-2008-2097, CVE-2008-2142
CVE-2008-2388, CVE-2008-2389

Content of this advisory:
1) Solved Security Vulnerabilities:
- xine NSF buffer overflow
- xemacs and emacs fast-lock file problems
- opensuse-updater tmp problems and off-by-one problems
- libvorbis security problems
- xine sdpplin_parse overflow
- vorbis-tools speex code execution problem
- pdns-recursor spoofing problems
- openwsman post-auth remote code execution
2) Pending Vulnerabilities, Solutions, and Work-Arounds:
- kernel update
3) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Solved Security Vulnerabilities

To avoid flooding mailing lists with SUSE Security Announcements for minor
issues, SUSE Security releases weekly summary reports for the low profile
vulnerability fixes. The SUSE Security Summary Reports do not list or
download URLs like the SUSE Security Announcements that are released for
more severe vulnerabilities.

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

- xine NSF buffer overflow

Specially crafted NSF files could potentially be exploited to
execute arbitrary code (CVE-2008-1878).

Specially crafted files or streams could potentially be abused to
trick applications that support speex into executing arbitrary code
(CVE-2008-1686).

Updated packages have been released for all SUSE distributions
containing XINE.

- xemacs and emacs fast-lock file problems
Emacs and Xemacs automatically loaded fast-lock files which allowed
local attackers to execute arbitrary code as the user editing the
associated files (CVE-2008-2142).

Xemacs and Emacs have been updated on all SUSE distributions.

- opensuse-updater tmp problems and off-by-one problems

The opensuse-updater on openSUSE 10.2 was updated to fix a symlink
problem and two off-by-one vulnerabilities.

The overflows can be considered no security problem and are tracked
by CVE-2008-2388.

The symlink flaw could be used by local users to gain unauthorized
access to information (like passwords) and is tracked by
CVE-2008-2389.

Only openSUSE 10.2 was affected by this problem.

- libvorbis security problems

Several security problems were fixed in libvorbis:

CVE-2008-1419 - Division by zero
CVE-2008-1420 - integer overflow
CVE-2008-1423 - integer overflow

libvorbis was updated on all SUSE distributions.

- xine sdpplin_parse overflow

Xine was updated to fix a bug in the function sdpplin_parse()
that allowed remote attackers to access process memory out-of a
buffers bound.

This vulnerability can be used to execute arbitrary code remotely
if successfully exploited. (CVE-2008-0073)

Xine was updated on all SUSE distributions.

- vorbis-tools speex code execution problem

Specially crafted files or streams could potentially be abused to
trick applications that support speex into executing arbitrary code
(CVE-2008-1686) using vorbis-tools.

vorbis-tools was fixed on all SUSE distributions.

- pdns-recursor spoofing problems

Pdns-recursor was prone to a spoofing vulnerability which could be
abused to redirect clients or manipulate data. (CVE-2008-1637)

pdns / pdns-recursor is shipped on SUSE Linux 10.1, openSUSE 10.2
and 10.3 and was fixed there.

- openwsman post-auth remote code execution

Openwsman was updated to provide a fix for the included shttpd
web-server to patch a buffer overflow vulnerability in the HTTP
request parser.

This bug can only be exploited by authenticated users to execute
arbitrary code with the privileges of the openwsman/shttp
daemon. (CVE-2008-2097)

Only openSUSE 10.3 contains openwsman and was fixed.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- Linux kernel update

We are currently preparing a kernel update for all products to catch up on
security
problems and bugs found in the last months.
______________________________________________________________________________

3) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify <file>

replacing <file> with the name of the file containing the
announcement.
The output for a valid signature looks like:

gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team
<security@suse.de>"

where <DATE> is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and integrity of a
package needs to be verified to ensure that it has not been tampered with.

The internal 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, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on RPMv4-based
distributions) and the gpg key ring of 'root' during installation.
You can
also find it on the first installation CD and included at the end of this
announcement.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

opensuse-security@opensuse.org
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security+subscribe@opensuse.org>.

opensuse-security-announce@opensuse.org
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security-announce+subscribe@opensuse.org>.

=====================================================================
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, the
clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides 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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