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______________________________________________________________________________

SUSE Security Summary Report

Announcement ID: SUSE-SR:2007:007
Date: Fri, 20 Apr 2007 17:00:00 +0000
Cross-References: CVE-2005-1038, CVE-2006-4250, CVE-2006-6870
CVE-2007-1246, CVE-2007-1384, CVE-2007-1385
CVE-2007-1473, CVE-2007-1799, CVE-2007-1856
CVE-2007-1869, CVE-2007-1870

Content of this advisory:
1) Solved Security Vulnerabilities:
- ktorrent file overwrite
- cron local denial of service problem
- lighttpd remote denial of service problems
- horde XSS problems
- MPlayer buffer overflow in w32codec interface code
- avahi denial of service problem
- man heap overflow
2) Pending Vulnerabilities, Solutions, and Work-Arounds:
- Month of PHP bugs
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 md5 sums
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.

- ktorrent file overwrite
The KDE Bittorrent client ktorrent insufficiently validated the
target file name.

A malicious server could therefore overwrite arbitrary files of the
user (CVE-2007-1384,CVE-2007-1799).

Another bug could be exploited to crash Ktorrent (CVE-2007-1385).

This bug has been fixed for all SUSE distributions containing
ktorrent.

- cron local denial of service problem
By setting hard links to /etc/crontab users were able to prevent
cron from running scheduled jobs (CVE-2007-1856).

A re-emerged symlink bug allowed users to edit the crontab of other
users (CVE-2005-1038).

This problem has been fixed for all our products.

- lighttpd remote denial of service problems
Two remotely exploitable DoS vulnerabilities in lighttpd can be
used to crash lighttpd or make it waste CPU time in an endless loop
(CVE-2007-1869, CVE-2007-1870).

Those problems were fixed in SUSE Linux 10.1, openSUSE 10.2 and
SUSE Linux Enterprise 10.

- horde XSS problems
Another cross site scripting bug (XSS) in horde was fixed
(CVE-2007-1473).

This affected all SUSE Linux products containing horde.

- MPlayer buffer overflow in w32codec interface code
The DirectShow loader in MPlayer uses wrong parameters in the memcpy
function call which leads to a buffer overflow (CVE-2007-1246).

MPlayer is only shipped with SUSE Linux Desktop 1.0 and was fixed
for this product.

- avahi denial of service problem
A remote denial of service problem was fixed in avahi, where
attackers could cause an endless loop by injecting specific
DNS replies. This is likely only exploitable in local
networks. (CVE-2006-6870)

Avahi was fixed for SUSE Linux 10.1, openSUSE 10.2, and SUSE Linux
Enterprise Desktop 10.

- man heap overflow
A heap based buffer overflow in the 'man' command could potentially
be exploited by users to run code as root (CVE-2006-4250).

Newer SUSE Linux versions however catch this error in the heap
integrity checking code of glibc.

Updates were released for all SUSE products.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- Month of PHP bugs
We are currently working on fixing all the bugs found by the Month
of PHP bugs project and will release updates when ready.
______________________________________________________________________________

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>.

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 e-mail to
<suse-security-announce-subscribe@suse.com>.

=====================================================================
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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