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______________________________________________________________________________
SUSE Security Announcement
Package: ipsec-tools
Announcement-ID: SUSE-SA:2005:020
Date: Thu, 31 Mar 2005 13:00:00 +0000
Affected products: 9.1, 9.2
SUSE Linux Enterprise Server 9
Novell Linux Desktop 9
Vulnerability Type: remote denial of service
Severity (1-10): 6
SUSE default package: no
Cross References: CAN-2005-0398
Content of this advisory:
1) security vulnerability resolved:
security problems in racoon
problem description
2) solution/workaround
3) special instructions and notes
4) package location and checksums
5) pending vulnerabilities, solutions, workarounds:
none
6) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion
Racoon is a ISAKMP key management daemon used in IPsec setups.
Sebastian Krahmer of the SUSE Security Team audited the daemon and
found that it handles certain ISAKMP messages in a slightly wrong way,
so that remote attackers can crash it via malformed ISAKMP packages.
This update fixes this problem.
This is tracked by the Mitre CVE ID CAN-2005-0398.
2) solution/workaround
None. Please install the updated packages.
3) special instructions and notes
Please restart the ipsec daemon, by running as root:
/usr/sbin/rcracoon try-restart
4) package location and checksums
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
x86 Platform:
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/ipsec-tools-0.4rc1-3.2.i586.rpm
396fbabba87d4da66d0a5a8bf004061a
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/ipsec-tools-0.3.3-1.6.i586.rpm
a2b518867110fcb0a386472d0cfc76d7
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/ipsec-tools-0.3.3-1.6.src.rpm
177a7c30baeba235ae6feeb89c962153
x86-64 Platform:
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/ipsec-tools-0.4rc1-3.2.x86_64.rpm
a4182f836f5c4af6b2fb57da4c57c134
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/ipsec-tools-0.4rc1-3.2.src.rpm
7f396a2b8bfb0f99f9dede830e9ba168
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/ipsec-tools-0.3.3-1.6.x86_64.rpm
fd1eb56dcad51c50944bb3a10ee3f23b
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/ipsec-tools-0.3.3-1.6.src.rpm
a2a311f0e24759afa7ba3412631cf83a
______________________________________________________________________________
5) Pending vulnerabilities in SUSE Distributions and Workarounds:
none
______________________________________________________________________________
6) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. 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) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.
1) 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
announcement. Since the announcement containing the checksums is
cryptographically signed (usually using the key security@suse.de),
the checksums show proof of the authenticity of the package.
We disrecommend to subscribe to security lists which cause the
email message containing the announcement to be modified so that
the signature does not match after transport through the mailing
list software.
Downsides: You must be able to verify the authenticity of the
announcement in the first place. If RPM packages are being rebuilt
and a new version of a package is published on the ftp server, all
md5 sums for the files are useless.
2) 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, where is the
filename of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an un-installed rpm
package file.
Prerequisites:
a) gpg is installed
b) The package is signed using a certain key. The public part of this
key must be installed by the gpg program in the directory
~/.gnupg/ under the user's home directory who performs the
signature verification (usually root). You can import the key
that is used by SUSE in rpm packages for SUSE Linux by saving
this announcement to a file ("announcement.txt") and
running the command (do "su -" to be root):
gpg --batch; gpg < announcement.txt | gpg --import
SUSE Linux distributions version 7.1 and thereafter install the
key "build@suse.de" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the top-level directory of the first CD (pubring.gpg)
and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SUSE runs two security mailing lists to which any interested party may
subscribe:
suse-security@suse.com
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email 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 email to
.
For general information or the frequently asked questions (faq)
send mail to:
or
respectively.
=====================================================================
SUSE's security contact is or .
@suse.de>.
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,
it is desired that the clear-text signature shows proof of the
authenticity of the text.
SUSE Linux AG makes 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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