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Category:   Application (VPN)  >   Racoon Vendors:   KAME Project
(Red Hat Issues Fix for RH Enterprise Linux) Racoon Can Be Crashed By Remote Users Sending Large ISAKMP Length Values
SecurityTracker Alert ID:  1010134
SecurityTracker URL:  http://securitytracker.com/id/1010134
CVE Reference:   CVE-2004-0403   (Links to External Site)
Date:  May 12 2004
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 20040408a
Description:   A denial of service vulnerability was reported in Racoon. A remote user can cause Racoon to crash.

It is reported that a remote user can send a specially crafted ISAKMP header with a very large value in the length field to cause Racoon to attempt to allocate more memory than is available. As a result, the Racoon process may be terminated, the report said.

Impact:   A remote user can cause the Racoon daemon to crash.
Solution:   Red Hat has released a fix.

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

ia64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ia64.rpm

ppc:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ppc.rpm

s390:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.s390.rpm

s390x:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.s390x.rpm

x86_64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

ia64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ia64.rpm

x86_64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.x86_64.rpm

The verification checksums are:

MD5 sum Package Name

819a52723fa5a2d7033f8f1bb3cc7a60 ipsec-tools-0.2.5-0.4.i386.rpm
c5e7c8d9795830b279cda5788bec8c4f ipsec-tools-0.2.5-0.4.ia64.rpm
f00e5a71c14bffad7888e6f9592d1f51 ipsec-tools-0.2.5-0.4.ppc.rpm
058c2463f7d1b93640d17fafbf952238 ipsec-tools-0.2.5-0.4.s390.rpm
86753b7e9ca3cecb383c65507a2964e6 ipsec-tools-0.2.5-0.4.s390x.rpm
6ada9a100876ea9ed4b5ead7c4364ab0 ipsec-tools-0.2.5-0.4.src.rpm
59be1182425e6f7442ee20679263ef35 ipsec-tools-0.2.5-0.4.x86_64.rpm

Vendor URL:  www.kame.net/racoon/ (Links to External Site)
Cause:   Input validation error, Resource error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3

Message History:   This archive entry is a follow-up to the message listed below.
Apr 26 2004 Racoon Can Be Crashed By Remote Users Sending Large ISAKMP Length Values



 Source Message Contents

Subject:  [RHSA-2004:165-01] Updated ipsec-tools package fixes


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated ipsec-tools package fixes vulnerabilities in ISAKMP daemon
Advisory ID:       RHSA-2004:165-01
Issue date:        2004-05-11
Updated on:        2004-05-11
Product:           Red Hat Enterprise Linux
Keywords:          SA x509
Cross references:  
Obsoletes:         
CVE Names:         CAN-2004-0155 CAN-2004-0164 CAN-2004-0403
- ---------------------------------------------------------------------

1. Topic:

An updated ipsec-tools package that fixes vulnerabilities in racoon (the
ISAKMP daemon) is now available.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 3 - i386
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

IPSEC uses strong cryptography to provide both authentication and
encryption services.

With versions of ipsec-tools prior to 0.2.3, it was possible for an
attacker to cause unauthorized deletion of SA (Security Associations.)
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2004-0164 to this issue.

With versions of ipsec-tools prior to 0.2.5, the RSA signature on x.509
certificates was not properly verified when using certificate based
authentication.  The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2004-0155 to this issue.

When ipsec-tools receives an ISAKMP header, it will attempt to allocate
sufficient memory for the entire ISAKMP message according to the header's
length field. If an attacker crafts an ISAKMP header with a extremely large
value in the length field, racoon may exceed operating system resource
limits and be terminated, resulting in a denial of service.  The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2004-0403 to this issue.

User of IPSEC should upgrade to this updated package, which contains
ipsec-tools version 0.25 along with a security patch for CAN-2004-0403
which resolves all these issues.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate.  The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):

120253 - CAN-2004-0155/CAN-2004-0164 KAME racoon issues

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

ia64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ia64.rpm

ppc:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ppc.rpm

s390:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.s390.rpm

s390x:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.s390x.rpm

x86_64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/ipsec-tools-0.2.5-0.4.src.rpm

i386:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.i386.rpm

ia64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.ia64.rpm

x86_64:
Available from Red Hat Network: ipsec-tools-0.2.5-0.4.x86_64.rpm



7. Verification:

MD5 sum                          Package Name
- --------------------------------------------------------------------------
819a52723fa5a2d7033f8f1bb3cc7a60 ipsec-tools-0.2.5-0.4.i386.rpm
c5e7c8d9795830b279cda5788bec8c4f ipsec-tools-0.2.5-0.4.ia64.rpm
f00e5a71c14bffad7888e6f9592d1f51 ipsec-tools-0.2.5-0.4.ppc.rpm
058c2463f7d1b93640d17fafbf952238 ipsec-tools-0.2.5-0.4.s390.rpm
86753b7e9ca3cecb383c65507a2964e6 ipsec-tools-0.2.5-0.4.s390x.rpm
6ada9a100876ea9ed4b5ead7c4364ab0 ipsec-tools-0.2.5-0.4.src.rpm
59be1182425e6f7442ee20679263ef35 ipsec-tools-0.2.5-0.4.x86_64.rpm


These packages are GPG signed by Red Hat for security.  Our key is
available from https://www.redhat.com/security/team/key.html

You can verify each package with the following command:
    
    rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    
    md5sum <filename>


8. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0155
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0164
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0403

9. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact.html

Copyright 2004 Red Hat, Inc.
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Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQFAodZrXlSAg2UNWIIRAoM6AJ9Rvgb2NzIVners6kuq/X+DYWwtmQCfTHSJ
Pynsyc3wmfICqt5GLlVNjgw=
=KXGg
-----END PGP SIGNATURE-----


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