CVE-2005-0634 in Golden FTP Server
Summary
by MITRE
Buffer overflow in Golden FTP Server 1.92 allows remote attackers to execute arbitrary code via a long USER command.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/27/2019
The vulnerability identified as CVE-2005-0634 represents a critical buffer overflow flaw within Golden FTP Server version 1.92 that exposes remote attackers to potential code execution capabilities. This issue stems from inadequate input validation mechanisms within the server's USER command processing functionality, creating a scenario where maliciously crafted input can overwrite adjacent memory regions. The buffer overflow occurs when the server fails to properly bounds-check the length of user-supplied data during authentication attempts, allowing attackers to inject malicious payloads that can overwrite critical program execution structures.
The technical implementation of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The flaw specifically manifests when an attacker sends an excessively long USER command to the FTP server, causing the application to write beyond the allocated buffer space. This memory corruption can potentially overwrite return addresses, function pointers, or other critical execution data, enabling attackers to redirect program flow and execute arbitrary code with the privileges of the FTP server process. The vulnerability's remote exploitation capability means that attackers do not need physical access to the system and can leverage network-based attacks to compromise the server.
From an operational impact perspective, this vulnerability presents a severe threat to organizations relying on Golden FTP Server for file transfer operations. Successful exploitation can result in complete system compromise, allowing attackers to gain unauthorized access to sensitive data, escalate privileges, and potentially establish persistent backdoors within the network infrastructure. The attack surface extends beyond individual server compromise to include potential lateral movement opportunities within corporate networks where FTP servers serve as entry points for broader reconnaissance and exploitation activities. Organizations utilizing this vulnerable software may face regulatory compliance violations and significant financial losses due to data breaches and system downtime.
Mitigation strategies for this vulnerability should prioritize immediate patching of the Golden FTP Server to the latest available version that addresses the buffer overflow condition. System administrators should implement network segmentation and access controls to limit exposure of FTP services to trusted networks only, while also deploying intrusion detection systems to monitor for suspicious USER command patterns. The implementation of input validation measures and boundary checking within application code can provide additional defense-in-depth layers, though these measures are secondary to proper patch management. Organizations should also consider implementing network access control lists to restrict FTP server access to authorized users only, and conduct regular vulnerability assessments to identify and remediate similar issues within their broader IT infrastructure. This vulnerability demonstrates the critical importance of maintaining up-to-date software versions and implementing comprehensive security monitoring practices to prevent exploitation of known vulnerabilities.