CVE-2014-1442 in FTP
Summary
by MITRE
Directory traversal vulnerability in Core FTP Server 1.2 before build 515 allows remote authenticated users to determine the existence of arbitrary files via a /../ sequence in an XCRC command.
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Analysis
by VulDB Data Team • 05/12/2026
The vulnerability identified as CVE-2014-1442 represents a directory traversal flaw within Core FTP Server version 1.2 prior to build 515. This security weakness specifically affects the XCRC command implementation and enables authenticated remote attackers to probe the file system structure of the affected server. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied paths containing directory traversal sequences. Attackers can exploit this issue by crafting malicious XCRC commands that include the '/../' sequence, allowing them to navigate the file system hierarchy and determine whether specific files or directories exist on the target system. This type of vulnerability falls under the category of path traversal attacks that are commonly classified as CWE-22 - Improper Limitation of a Pathname to a Restricted Directory. The security implications extend beyond simple information disclosure as this reconnaissance capability can serve as a foundation for more sophisticated attacks targeting sensitive system files or configuration data.
The technical exploitation of this vulnerability requires an authenticated session, meaning that attackers must first establish valid credentials to access the FTP server before attempting the traversal attack. This authentication requirement somewhat limits the scope of exploitation compared to unauthenticated vulnerabilities, but it does not eliminate the security risk entirely. The XCRC command specifically designed for checksum calculation becomes a vector for malicious path manipulation, demonstrating how legitimate server functions can be subverted through improper input handling. The vulnerability manifests when the server processes the malformed path without adequately validating or sanitizing the input, allowing the traversal sequence to be interpreted as part of the intended file path rather than as a malicious attempt to access restricted directories. From a cybersecurity perspective, this vulnerability aligns with ATT&CK technique T1083 - File and Directory Discovery, as it enables adversaries to map the file system structure of the compromised system.
The operational impact of CVE-2014-1442 extends beyond immediate information disclosure to potentially enable more serious security breaches. While the vulnerability primarily allows for file existence checking, it provides attackers with valuable reconnaissance data that can inform subsequent attack phases. An attacker could use this information to identify sensitive files such as configuration backups, credential stores, or system binaries that might be targeted in later exploitation stages. The vulnerability also demonstrates poor security practices in input validation and path handling, indicating potential weaknesses in other areas of the application's codebase. Organizations running affected versions of Core FTP Server face the risk of unauthorized file system enumeration, which could lead to privilege escalation opportunities or facilitate the discovery of additional vulnerabilities within the system. The presence of such vulnerabilities in server applications underscores the critical importance of proper input validation and secure coding practices throughout the software development lifecycle.
Mitigation strategies for CVE-2014-1442 should prioritize immediate remediation through software updates or patches provided by the vendor. Organizations should ensure that all instances of Core FTP Server are updated to build 515 or later versions that contain the necessary fixes for the directory traversal vulnerability. In addition to patching, network administrators should implement proper access controls and authentication mechanisms to limit the number of valid accounts available to potential attackers. The vulnerability highlights the importance of principle of least privilege, ensuring that FTP server accounts have minimal necessary permissions and access rights. Security monitoring should include detection of unusual XCRC command usage patterns that might indicate attempted exploitation attempts. Organizations should also consider implementing network segmentation and firewall rules to restrict access to FTP services to trusted networks only. From a defensive perspective, this vulnerability serves as a reminder of the importance of regular security assessments and vulnerability scanning to identify and remediate similar issues before they can be exploited by malicious actors. The incident also emphasizes the need for comprehensive security training for developers regarding secure coding practices and the proper handling of user-supplied data to prevent similar vulnerabilities from being introduced into applications.