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______________________________________________________________________________

SUSE Security Summary Report

Announcement ID: SUSE-SR:2006:017
Date: Fri, 21 Jul 2006 17:00:00 +0000
Cross-References: CVE-2006-2223 CVE-2006-2224 CVE-2006-3403
CVE-2006-2842 CVE-2006-2451 CVE-2006-3626

Content of this advisory:
1) Solved Security Vulnerabilities:
- quagga/zebra RIPv2 auth evasion
- samba remote denial of service
- squirrelmail local file inclusion
- CASA various fixes
2) Pending Vulnerabilities, Solutions, and Work-Arounds:
- Local root exploits 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.

- quagga/zebra RIPv2 auth evasion
In the routing suites zebra and quagga it was possible to bypass
RIPv2 authentication requirements by using RIPv1.

Since RIPv1 doesn't support authentication at all this update
introduces an option to switch off RIPv1 (CVE-2006-2223,
CVE-2006-2224).

This affects all SUSE Linux based products.

- samba remote denial of service
The Samba smbd daemon could be made to allocate huge amounts of
memory by sending malformed packets from remote and so effecting
a remote denial of service attack due to memory exhaustion.

This issue is tracked by the Mitre CVE ID CVE-2006-3403 and affects
all SUSE Linux based products.

- squirrelmail local file inclusion
The squirrelmail webmail front end could be made to include local
files into its PHP code, potentially causing code execution.

This issue is tracked by the Mitre CVE ID CVE-2006-2842 and affects
all SUSE Linux products.

- CASA various fixes
Various bugs and problems were fixed in the CASA authentication
framework, some of them security relevant:

- Secrets with special characters inside were handled incorrectly.
- Enhanced Salt generation.

We updated the CASA packages on 10.1 to SLE 10 level.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- Local root exploits in Linux kernel
The Mitre CVE ID CVE-2006-2451 references a local root exploit using
the prctl() system call. This affects SUSE Linux Enterprise Server
9 and 10, SUSE Linux 10.0 and SUSE Linux 10.1

The Mitre CVE ID CVE-2006-3626 references a local root exploit
using /proc/ files. This affects all 2.6 Kernel using products,
SUSE Linux 9.2 up to 10.1, SUSE Linux Enterprise Server 9 and 10.

The SUSE Linux 10.1, 10.0 and 9.3 kernel updates for this issue
were released this week, but included in the later summary.

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

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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