The remote host is missing updates announced in advisory RHSA-2006:0267.
The ipsec-tools package is used in conjunction with the IPsec functionality in the linux kernel and includes racoon, an IKEv1 keying daemon.
A denial of service flaw was found in the ipsec-tools racoon daemon. If a victim's machine has racoon configured in a non-recommended insecure manner, it is possible for a remote attacker to crash the racoon daemon. (CVE-2005-3732)
Users of ipsec-tools should upgrade to these updated packages, which contain backported patches, and are not vulnerable to these issues.
Solution: Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date