CVE-2003-1472 in 3D-FTP Client
Summary
by MITRE
Buffer overflow in 3D-FTP client 4.0 allows remote FTP servers to cause a denial of service (crash) and possibly execute arbitrary code via a long banner.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 01/25/2025
The vulnerability identified as CVE-2003-1472 represents a critical buffer overflow flaw within the 3D-FTP client version 4.0 that exposes users to significant security risks including potential remote code execution and system compromise. This issue stems from inadequate input validation mechanisms within the client application's handling of FTP server responses, specifically the welcome banner message that servers transmit upon connection. The vulnerability operates at the application layer and demonstrates a classic buffer overflow pattern where the client fails to properly bounds-check the length of data received from remote servers, creating an exploitable condition that can be leveraged by malicious actors.
The technical implementation of this vulnerability occurs when a remote FTP server sends an excessively long banner message that exceeds the allocated buffer space within the 3D-FTP client application. This overflow condition typically manifests when the application attempts to copy or process the banner data without proper length verification, causing the buffer to overflow into adjacent memory regions. The flaw falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and aligns with ATT&CK technique T1203, which covers exploitation of software vulnerabilities through buffer overflow attacks. The vulnerability's impact extends beyond simple denial of service as it can potentially allow remote attackers to execute arbitrary code with the privileges of the affected user, making it particularly dangerous in enterprise environments.
From an operational perspective, this vulnerability creates a significant risk for organizations that rely on the 3D-FTP client for file transfer operations, as attackers can exploit it to disrupt services or gain unauthorized access to systems. The remote nature of the exploit means that any user connecting to a malicious FTP server could be compromised without their knowledge, making it particularly insidious. The vulnerability affects the availability and integrity of the client application and potentially the underlying system, as successful exploitation could lead to complete system compromise. Network administrators must consider the widespread use of FTP clients in legacy systems and the potential for cascading effects when a single vulnerable client component is exploited.
Mitigation strategies for CVE-2003-1472 should prioritize immediate patching of the 3D-FTP client to address the buffer overflow condition through proper input validation and bounds checking mechanisms. Organizations should implement network segmentation to limit exposure to potentially malicious FTP servers and consider deploying network monitoring tools to detect anomalous banner responses that may indicate exploitation attempts. The implementation of secure coding practices including the use of safe string handling functions and proper memory management techniques should be enforced throughout the development lifecycle to prevent similar vulnerabilities from being introduced in future applications. Additionally, regular security assessments and vulnerability scanning should be conducted to identify and remediate similar buffer overflow conditions in other network applications and client software components.