CVE-2003-0648 in Text Editor
Summary
by MITRE
Multiple buffer overflows in vfte, based on FTE, before 0.50, allow local users to execute arbitrary code.
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Analysis
by VulDB Data Team • 11/18/2024
The vulnerability identified as CVE-2003-0648 represents a critical security flaw affecting vfte, a file transfer utility derived from the FTE (File Transfer Engine) framework. This vulnerability manifests as multiple buffer overflows that exist within the software's implementation, specifically targeting versions prior to 0.50. The flaw occurs at the core level of the file transfer functionality, where insufficient input validation and memory management practices create exploitable conditions that can be leveraged by malicious actors.
The technical nature of this vulnerability stems from improper buffer handling within the vfte application, where fixed-size buffers are used to store user-supplied data without adequate bounds checking. This classic buffer overflow condition allows attackers to overwrite adjacent memory locations, potentially corrupting program execution flow and enabling arbitrary code execution. The vulnerability specifically affects local users, meaning that an attacker must already have access to the system to exploit this flaw, but the privilege escalation potential remains significant. According to CWE classification, this corresponds to CWE-121, which details stack-based buffer overflow conditions, and CWE-122, which addresses heap-based buffer overflow scenarios that may occur in similar applications.
The operational impact of CVE-2003-0648 extends beyond simple code execution, as it provides attackers with potential for privilege escalation and system compromise. Local users who can manipulate the vfte application's input parameters can leverage this vulnerability to gain unauthorized access to system resources, potentially leading to complete system takeover. The implications are particularly severe in environments where the vfte utility is used for file transfer operations, as attackers could exploit this flaw to intercept, modify, or exfiltrate sensitive data. This vulnerability also aligns with ATT&CK technique T1059, which covers command and script injection, as the arbitrary code execution capability enables attackers to run malicious commands on the compromised system.
Mitigation strategies for this vulnerability require immediate patching of the vfte application to version 0.50 or later, which contains the necessary fixes for buffer overflow conditions. System administrators should also implement additional security measures such as restricting local user access to the vfte utility, implementing proper input validation procedures, and monitoring for suspicious file transfer activities. The vulnerability demonstrates the importance of proper software development practices including input sanitization, memory management, and regular security updates, as outlined in industry standards such as the OWASP Top Ten and NIST cybersecurity frameworks. Organizations should conduct comprehensive vulnerability assessments to identify other potentially affected applications and implement robust patch management processes to prevent similar issues from occurring in the future.