The original design of ICMP does not require authentication for host-generated ICMP error messages which makes it easier for attackers to forge ICMP error messages for specific TCP connections and cause a denial of service as demonstrated using (1) blind connection-reset attacks with forged \Destination Unreachable\ messages (2) blind throughput-reduction attacks with forged \Source Quench\ messages or (3) blind throughput-reduction attacks with forged ICMP messages that cause the Path MTU to be reduced. NOTE: CVE-2004-0790 CVE-2004-0791 and CVE-2004-1060 have been SPLIT based on different attacks; CVE-2005-0065 CVE-2005-0066 CVE-2005-0067 and CVE-2005-0068 are related identifiers that are SPLIT based on the underlying vulnerability. While CVE normally SPLITs based on vulnerability the attack-based identifiers exist due to the variety and number of affected implementations and solutions that address the attacks instead of the underlying vulnerabilities.