An updated ipsec-tools package that fixes multiple security issues is nowavailable for Red Hat Enterprise Linux 5.This update has been rated as having important security impact by the RedHat Security Response Team.The ipsec-tools package is used in conjunction with the IPsec functionalityin the Linux kernel and includes racoon, an IKEv1 keying daemon.A denial of service flaw was found in the ipsec-tools racoon daemon. Anunauthenticated, remote attacker could trigger a NULL pointer dereferencethat could cause the racoon daemon to crash. (CVE-2009-1574)