CVE-2024-0693 in Easy File Sharing FTP
Summary
by MITRE • 01/19/2024
A vulnerability classified as problematic was found in EFS Easy File Sharing FTP 2.0. Affected by this vulnerability is an unknown functionality. The manipulation of the argument username leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-251479. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 02/12/2024
The vulnerability identified as CVE-2024-0693 represents a significant security flaw within EFS Easy File Sharing FTP 2.0 software, specifically targeting an unknown functionality that has been exploited to create a denial of service condition. This vulnerability manifests when an attacker manipulates the username argument, demonstrating the dangerous potential for remote exploitation that can compromise the availability of the targeted system. The issue has been publicly disclosed and is actively being used by threat actors, indicating that the risk extends beyond theoretical concerns to practical exploitation in real-world scenarios. The lack of vendor response despite early notification creates a particularly concerning situation where users remain unprotected against this known vulnerability.
The technical nature of this flaw places it within the domain of input validation and resource management vulnerabilities, which aligns with common CWE classifications such as CWE-20 for Improper Input Validation and CWE-400 for Uncontrolled Resource Consumption. The attack vector being remote means that adversaries can exploit this vulnerability without requiring physical access to the system, making it particularly dangerous for networked environments. The manipulation of the username parameter suggests that the application fails to properly validate or sanitize user input before processing it, leading to a cascading failure that results in denial of service conditions. This type of vulnerability can be classified under the MITRE ATT&CK framework as a privilege escalation or denial of service technique, potentially enabling attackers to disrupt legitimate service availability.
The operational impact of CVE-2024-0693 extends beyond simple service disruption to potentially compromise the entire file sharing infrastructure that relies on EFS Easy File Sharing FTP 2.0. Organizations using this software may experience complete service outages that can affect business operations, data accessibility, and user productivity. The remote exploit capability means that attackers can target these systems from anywhere on the internet, making the attack surface extremely broad. Given that the vulnerability has been disclosed and is publicly available, the window of opportunity for exploitation is significant, as threat actors can readily implement automated attacks against vulnerable systems without requiring advanced technical skills.
Mitigation strategies for this vulnerability should prioritize immediate remediation through vendor updates or patches, though the lack of vendor response creates additional challenges for system administrators. Organizations should implement network segmentation to limit access to affected systems, deploy intrusion detection systems to monitor for exploitation attempts, and consider temporary workarounds such as disabling vulnerable FTP functionality until proper patches are available. The absence of vendor communication regarding this vulnerability underscores the importance of maintaining awareness of third-party software security risks and implementing proactive security measures. Security teams should also consider implementing monitoring protocols specifically designed to detect exploitation attempts targeting this type of denial of service vulnerability, as the attack patterns may follow predictable signatures that can be identified through network traffic analysis.