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. This issue affected Red Hat Enterprise Linux 3 RHSA-2004:165 in progress
Additionally: 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. CAN-2004-0403
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2004-165.html