SUSE 5154 Published by

A security announcement from SUSE



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______________________________________________________________________________

SUSE Security Summary Report

Announcement ID: SUSE-SR:2006:016
Date: Fri, 14 Jul 2006 17:00:00 +0000
Cross-References: CVE-2004-1488, CVE-2005-4190, CVE-2006-2195
CVE-2006-2451, CVE-2006-3093, CVE-2006-3242
CVE-2006-3334

Content of this advisory:
1) Solved Security Vulnerabilities:
- Acroread 7.0.8 problems - not affected
- libpng buffer overflow - not affected
- wget file overwrite and terminal characters
- mutt remove overflow by IMAP servers
- horde cross site scripting problems fixed
2) Pending Vulnerabilities, Solutions, and Work-Arounds:
- Local root exploit in Linux kernel
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.

- Acroread 7.0.8 problems - not affected
In SUSE-SA:2006:041 we reported that Acrobat Reader on Linux is
affected by the problem referenced by CVE-2006-3093.

Further information showed that this is not the case.

This means that Acrobat Reader 7.0.5 is not vulnerable to this
problem.

- libpng buffer overflow - not affected
The PNG developers released a new version of libpng, which fixes
a buffer overflow. This issue is tracked by the Mitre CVE ID
CVE-2006-3334.

Our investigations show:
- With the current interaction between libpng and zlib it is not
possible to get the error return code that triggers the buffer
overflow.

- The overflow would overwrite 2 bytes of stack padding (assuming
a default padding of 4 bytes).

- And last but not least it would be caught by _FORTIFY_SOURCE on
SUSE Linux 10.0 and newer products.

So no SUSE product is affected by this problem.

- wget file overwrite and terminal characters
A security issue was fixed in wget, where evil servers could send
terminal escape codes to the user calling wget. This would only
affect interactive sessions. (CVE-2004-1488)

Additionally the previous ".file" fix was found to be buggy and
replaced. This bug could lead to ".directories" not being retrievable
and "_files" being overwritten.

All SUSE Linux based products were affected by those problems.

- mutt remove overflow by IMAP servers
Mutt had a buffer overflow in IMAP name space parsing code which
may open a possible remote vulnerability (CVE-2006-3242).

This requires attaching to an "evil" IMAP server.

All SUSE Linux based products containing mutt were affected.

- horde cross site scripting problems fixed
Some cross site scripting problems where fixed in the horde
framework.

These are tracked by the Mitre CVE IDs CVE-2005-4190,CVE-2006-2195.

All SUSE Linux based products containing horde were affected.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- Local root exploit in Linux kernel
The Mitre CVE ID CVE-2006-2451 is referencing a local root exploit
using the prctl() system call.

SUSE Linux Enterprise Server 9, Novell Linux Desktop 9, Open Enterprise
Server, SUSE Linux 10.0, SUSE Linux 10.1 and SUSE Linux Enterprise
(Server and Desktop) 10 are affected by this problem.

We are preparing updates for this problem, but they will take at
least a week due to QA turnaround times.


Temporary Kernel updates can be gotten from our Kernel Of The Day
repository (unsupported):

SLES9, NLD9 and OES:
ftp://ftp.suse.com/pub/projects/kernel/kotd/sles9-<arch>/SLES9_SP3_BRANCH/

SUSE Linux 10.0:
ftp://ftp.suse.com/pub/projects/kernel/kotd/10.0-<arch>/SL100_BRANCH/

SUSE Linux 10.1, SLE10: No fixed kernel of the day available currently.
______________________________________________________________________________

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:

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

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