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CVE Record

CVE-2005-0068: The original design of ICMP does not require authentication for host-generated ICMP error messages, which m...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is a protocol-design weakness in ICMP: error messages do not inherently prove who sent them. An attacker may forge certain ICMP errors to disrupt or slow selected TCP connections, creating denial-of-service risk rather than data theft or code execution. Exposure is potentially broad where TCP/IP stacks or network paths accept forged ICMP errors for established TCP flows. The source bundle lists no specific affected vendors, products, or versions, so exposure must be validated against each operating system, appliance, and network control plane. Handle as a resilience and availability issue. Prioritize critical internet-facing services, legacy network equipment, and environments where TCP disruption would affect revenue or operations. Because affected products and fixes are not named, remediation should start with vendor validation and network-control review. Mitigation focus: Check vendor guidance for TCP/IP stack hardening and security updates.; Review firewall and router handling of ICMP errors affecting TCP flows.; Rate-limit or filter suspicious ICMP error traffic where operationally safe..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
1Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

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