SUSE Security Announcement: clamav 0.88.7 (SUSE-SA:2006:078)
Posted on: 12/18/2006 01:00 PM

A security announcement from SUSE

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______________________________________________________________________________

SUSE Security Announcement

Package: clamav
Announcement ID: SUSE-SA:2006:078
Date: Mon, 18 Dec 2006 12:00:00 +0000
Affected Products: Novell Linux POS 9
Open Enterprise Server
openSUSE 10.2
SUSE LINUX 10.1
SUSE LINUX 10.0
SUSE LINUX 9.3
SUSE SLES 10
SUSE SLES 9
Vulnerability Type: remote denial of service
Severity (1-10): 6
SUSE Default Package: no
Cross-References: CVE-2006-5874, CVE-2006-6406, CVE-2006-6481

Content of This Advisory:
1) Security Vulnerability Resolved:
clamav 0.88.7 security update
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 has been updated to version 0.88.7
to fix various security problems:

CVE-2006-5874: Clam AntiVirus (ClamAV) allows remote attackers to
cause a denial of service (crash) via a malformed base64-encoded MIME
attachment that triggers a null pointer dereference.

CVE-2006-6481: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers
to cause a denial of service (stack overflow and application crash)
by wrapping many layers of multipart/mixed content around a document,
a different vulnerability than CVE-2006-5874 and CVE-2006-6406.

CVE-2006-6406: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers
to bypass virus detection by inserting invalid characters into base64
encoded content in a multipart/mixed MIME file, as demonstrated with
the EICAR test file.

2) Solution or Work-Around

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

3) Special Instructions and Notes

None.

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-0.88.7-1.1.i586.rpm
31ff4c80173352b7be840a668e99660f

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/clamav-0.88.7-1.2.i586.rpm
7010d42a842404deefa694b51bc1edf2

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/clamav-0.88.7-1.1.i586.rpm
90f817d3807328756f0f2b4f69aeffe4

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/clamav-0.88.7-1.1.i586.rpm
4e4bf1fdac1d07521c115eee4878a120

Power PC Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/clamav-0.88.7-1.1.ppc.rpm
e97f82da161d797977de64eec6e56f88

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/clamav-0.88.7-1.2.ppc.rpm
4f90832ce1d606a10933078cf44b4400

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/clamav-0.88.7-1.1.ppc.rpm
51fffc7036edcbd012b8836ff2e7a08c

x86-64 Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/clamav-0.88.7-1.1.x86_64.rpm
2b9e9c53855e579d62029255ce9c315f

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/clamav-0.88.7-1.2.x86_64.rpm
099247a53aa4314993f182f68f74b06a

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/clamav-0.88.7-1.1.x86_64.rpm
18f02e5330a8bec20b0c845ce5a9d653

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/clamav-0.88.7-1.1.x86_64.rpm
9244e87aab197f63f420dd356ef89b83

Sources:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/clamav-0.88.7-1.1.src.rpm
69c2a992bc1243ba0b03cef1054caa67

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/src/clamav-0.88.7-1.2.src.rpm
01f7d2e67b5d171337e9fb3141205a6d

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/clamav-0.88.7-1.1.src.rpm
84ec713db7da8c22943e14f34f68161c

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/clamav-0.88.7-1.1.src.rpm
6ee8c0c87cb87db1f331cf46dc087a8c

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/99ff98254c77739e0c421ee90228d262.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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