CVE-2000-0165 in Delegate
Summary
by MITRE
The Delegate application proxy has several buffer overflows which allow a remote attacker to execute commands.
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Analysis
by VulDB Data Team • 12/13/2024
The CVE-2000-0165 vulnerability targets the Delegate application proxy, a widely used software component that facilitates communication between different network services and protocols. This vulnerability represents a critical security flaw that affects the application's handling of input data, specifically manifesting as multiple buffer overflow conditions within the proxy implementation. The Delegate application serves as a gateway for various network services including email, web, and file transfer protocols, making it a prime target for attackers seeking to compromise network infrastructure. Buffer overflow vulnerabilities in proxy applications are particularly dangerous because they can provide attackers with elevated privileges and unauthorized access to underlying systems that the proxy serves as a gateway to.
The technical flaw in CVE-2000-0165 stems from inadequate input validation and memory management within the Delegate application's network handling routines. When the proxy processes incoming network requests containing specially crafted malicious data, it fails to properly check buffer boundaries before copying data into fixed-length memory buffers. This allows attackers to overwrite adjacent memory locations, potentially corrupting program execution flow and injecting malicious code. The vulnerability manifests in multiple locations within the application's codebase, indicating a systemic issue with buffer management practices rather than a single isolated flaw. These buffer overflows occur during the processing of network protocol data, particularly when handling certain header fields or command parameters that are passed through the proxy to backend services.
The operational impact of this vulnerability extends far beyond simple remote code execution capabilities, creating significant risks for organizations relying on Delegate applications for network services. Attackers exploiting this vulnerability can gain unauthorized access to systems behind the proxy, potentially compromising entire network infrastructures and allowing for persistent access and data exfiltration. The remote nature of the exploit means that attackers do not require physical access to the network or direct system interaction, making the vulnerability particularly attractive for large-scale attacks. Network administrators face the challenge of defending against attacks that can originate from anywhere on the internet, with the potential for complete system compromise and unauthorized access to sensitive data. This vulnerability directly aligns with attack patterns described in the MITRE ATT&CK framework under the execution and privilege escalation tactics, where attackers leverage application vulnerabilities to gain system-level access.
Mitigation strategies for CVE-2000-0165 require immediate action from system administrators, including applying vendor patches and updates as soon as they become available. Organizations should implement network segmentation to limit the exposure of Delegate applications to untrusted networks, while also deploying intrusion detection systems to monitor for exploitation attempts. The vulnerability demonstrates the importance of proper input validation and memory management practices, which aligns with CWE categories related to buffer overflows and improper input handling. Security teams should conduct comprehensive vulnerability assessments to identify all instances of Delegate applications within their network infrastructure and ensure proper configuration to minimize attack surface. Regular security audits and code reviews focusing on memory management practices can help prevent similar vulnerabilities from emerging in other applications. Additionally, implementing network monitoring solutions that can detect anomalous traffic patterns consistent with buffer overflow exploitation attempts provides an additional layer of defense against this and similar vulnerabilities.