CVE-2000-0138 in Host
Summary
by MITRE
A system has a distributed denial of service (DDOS) attack master, agent, or zombie installed, such as (1) Trinoo, (2) Tribe Flood Network (TFN), (3) Tribe Flood Network 2000 (TFN2K), (4) stacheldraht, (5) mstream, or (6) shaft.
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Analysis
by VulDB Data Team • 04/21/2026
This vulnerability represents a critical security weakness involving the presence of distributed denial of service attack infrastructure within a system environment. The vulnerability specifically identifies the installation of malicious software components that can transform a compromised system into a coordinated attack node capable of participating in large-scale DDoS operations. These attack frameworks include well-known tools such as Trinoo, Tribe Flood Network, Tribe Flood Network 2000, stacheldraht, mstream, and shaft, all of which are designed to create botnet networks that can be remotely controlled to launch coordinated attacks against target systems. The presence of any of these tools indicates that the affected system has been compromised and is being used as part of a larger attack infrastructure rather than being directly vulnerable to a specific software flaw.
The technical nature of this vulnerability stems from the unauthorized installation of malicious software that operates as either a master controller, agent, or zombie node within a distributed attack network. These tools typically establish backdoor access to compromised systems and can be remotely commanded to participate in coordinated DDoS attacks against specified targets. The master node controls the attack parameters and coordinates the activities of multiple agent nodes, while the agent nodes execute the actual attack commands. This architecture allows attackers to launch massive attacks that can overwhelm target systems with traffic from multiple sources simultaneously. The vulnerability manifests as the presence of these tools in the system's file system, registry entries, or running processes, indicating that the system has been compromised and is actively participating in malicious activities.
The operational impact of this vulnerability extends far beyond simple system compromise, as it transforms the affected system into an active participant in coordinated cyberattacks against other networks and services. Organizations may face severe consequences including legal liability for participating in DDoS attacks, reputational damage, and potential criminal prosecution for hosting malicious infrastructure. The compromised system becomes a vector for launching attacks against third parties, making the organization responsible for the actions of the malicious software regardless of whether the system owners were aware of the compromise. Additionally, the presence of these tools often indicates broader system vulnerabilities that attackers may have exploited to gain initial access, suggesting that other security controls may have been compromised as well.
Mitigation strategies for this vulnerability require immediate forensic analysis to identify and remove all traces of the malicious software from the compromised system. Security teams must conduct thorough system scans to detect and eliminate all variants of the identified attack tools, including checking for persistence mechanisms such as startup scripts, registry modifications, and scheduled tasks. Network monitoring should be enhanced to detect unusual traffic patterns that may indicate ongoing attack activities, and all network access controls should be reviewed and strengthened to prevent future unauthorized installations. Organizations should implement comprehensive incident response procedures that include network segmentation, access control reviews, and continuous monitoring for signs of compromise. This vulnerability aligns with CWE-1104, which addresses the presence of malicious code in systems, and represents a significant concern under ATT&CK framework category T1498, which covers network denial of service attacks. Regular security assessments and vulnerability scanning should be conducted to ensure that no remnants of these tools remain in the system, and proper system hardening practices should be implemented to prevent future compromise.