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______________________________________________________________________________

SUSE Security Announcement

Package: clamav
Announcement ID: SUSE-SA:2007:017
Date: Fri, 23 Feb 2007 16:00:00 +0000
Affected Products: SUSE LINUX 9.3
SUSE LINUX 10.0
SUSE LINUX 10.1
openSUSE 10.2
SUSE SLES 9
Open Enterprise Server
Novell Linux POS 9
SUSE SLES 10
Vulnerability Type: remote denial of service
Severity (1-10): 6
SUSE Default Package: no
Cross-References: CVE-2007-0897, CVE-2007-0898

Content of This Advisory:
1) Security Vulnerability Resolved:
clamav 0.90 security fix release
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

The anti-virus scan engine ClamAV was updated to the version 0.90 to
fix various bugs including 2 security bugs:

CVE-2007-0897: A file descriptor leak in the handling of CAB files can
lead to a denial of service attack against the clamd scanner daemon
caused by remote attackers.

CVE-2007-0898: A directory traversal in handling of MIME E-Mail headers
could be used by remote attackers to overwrite local files owned
by the user under which clamd is running.
Since clamd is running as "vscan" user on SUSE, it would only be able to
overwrite files owned by "vscan".

2) Solution or Work-Around

There is no known workaround, please install the update packages.

3) Special Instructions and Notes

Note that the configuration file format was changed by the upstream
clamav developers.

We included a converter script which automatically converts clamd.conf
and freshclam.conf on update but we suggest to review the changed
configuration files.

Please check that the clamd is still running after the update (it
should get restarted automatically by the update, but might fail due
to incorrectly converted config files).

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command

rpm -Fhv <file.rpm>

to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.


x86 Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/clamav-0.90-0.1.i586.rpm
450fd88ce94fb7421d7232e55ca7be57

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/clamav-0.90-0.2.i586.rpm
9bb705eef58f149c6023fa25a2e7441d

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/clamav-0.90-0.1.i586.rpm
abe77980ac3d274549acef965d9b3ed5

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/clamav-0.90-0.1.i586.rpm
d0ab2a48d370941ee4037ffab8686916

Power PC Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/clamav-0.90-0.1.ppc.rpm
506b432229252c3188a977c46c847ef9

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/clamav-0.90-0.2.ppc.rpm
4de0855522f57a533bdb770e6c760abf

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/clamav-0.90-0.1.ppc.rpm
b0b11ecfb27387259b0589f943dc6bd2

x86-64 Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/clamav-0.90-0.1.x86_64.rpm
c6d88b70c377db486524e8331cc19ded

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/clamav-0.90-0.2.x86_64.rpm
9eb79478b0a8d83370fabcf43e47b5ae

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/clamav-0.90-0.1.x86_64.rpm
fbe3ec3733c4483c5b7dfd890d5a6079

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/clamav-0.90-0.1.x86_64.rpm
cd744ebc2447166b5cc7bd065a93c4b5

Sources:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/clamav-0.90-0.1.src.rpm
ab8ddfd395ab7fccde2e152e13d4e5a1

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/src/clamav-0.90-0.2.src.rpm
1f43996fcef6f47298ea8fcc2ea07eaa

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/clamav-0.90-0.1.src.rpm
9d7f916f64ce377bec6a531d9fa74590

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/clamav-0.90-0.1.src.rpm
9887574f7864200081f230fa32e78db8

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

Open Enterprise Server
Novell Linux POS 9
SUSE SLES 10
SUSE SLES 9
http://support.novell.com/techcenter/psdb/abe28be29295a2d1e392e79ff39d4b40.html

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

See SUSE Security Summary Report.
______________________________________________________________________________

6) 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 where you saved 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 the integrity of
a package needs to be verified to ensure that it has not been tampered
with.

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) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement

1) 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 at
the end of this announcement.

2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command

md5sum <filename.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
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.

- 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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