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______________________________________________________________________________
SUSE Security Announcement
Package: spamassassin
Announcement ID: SUSE-SA:2005:033
Date: Wed, 22 Jun 2005 16:00:00 +0000
Affected Products: SUSE Linux 9.2, 9.3
Vulnerability Type: remote denial of service
Severity (1-10): 4
SUSE Default Package: no
Cross-References: CAN-2005-1266
Content of This Advisory:
1) Security Vulnerability Resolved:
denial of service attack against spamassassin
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 spam tool SpamAssassin was prone to a denial-of-service
attack. A remote attacker could craft a MIME E-Mail message that
would waste a lot of CPU cycles parsing the Content-Type header.
This is tracked by the Mitre CVE ID CAN-2005-1266.
Only SUSE Linux 9.2 and 9.3 are affected, since they include the 3.x
version of spamassassin. Older versions are not affected.
2) Solution or Work-Around
Please install the upgraded packages.
3) Special Instructions and Notes
Please restart running daemons that are using spamassassin (spamd, amavisd).
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
to apply the update, replacing with the filename of the
downloaded RPM package.
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web.
x86 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/perl-spamassassin-3.0.4-1.1.i586.rpm
ffff26505ae36f59c2e4a3baba36a6e1
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/spamassassin-3.0.4-1.1.i586.rpm
3c0c41b5261fe1b55539f722b6963de9
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/perl-spamassassin-3.0.4-1.1.i586.rpm
ff3a80d96577e4e5e295a9b2eabb2601
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/spamassassin-3.0.4-1.1.i586.rpm
290ee4193359dc8931d5c9ef0bbea0a5
x86-64 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/perl-spamassassin-3.0.4-1.1.x86_64.rpm
93e7f3a7c8a40b945277a65a04eb44df
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/spamassassin-3.0.4-1.1.x86_64.rpm
2d243affea763f1b3073be86fb7f8d08
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/spamassassin-3.0.4-1.1.src.rpm
e3592564bb01536c50948811293bad7b
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/perl-spamassassin-3.0.4-1.1.x86_64.rpm
077e1e604de9953898040d7fb2192b46
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/spamassassin-3.0.4-1.1.x86_64.rpm
26ffd80d45e83a6931eaf86a8c85ff1b
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/spamassassin-3.0.4-1.1.src.rpm
9dfd203b10a593b5f28dc7cbae7fe550
______________________________________________________________________________
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 "
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
to verify the signature of the package, replacing 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
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:
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-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
.
For general information or the frequently asked questions (FAQ),
send mail to or
.
=====================================================================
SUSE's security contact is or .
The 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
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key
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Marcus Meissner