CVE-2004-2380 in Web Server
Summary
by MITRE
Directory traversal vulnerability in postfile.exe for Twilight Utilities Web Server 2.0.0.0 allows remote attackers to write arbitrary files via a .. (dot dot) in the attfile parameter.
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Analysis
by VulDB Data Team • 05/17/2025
The vulnerability identified as CVE-2004-2380 represents a critical directory traversal flaw within the Twilight Utilities Web Server version 2.0.0.0, specifically affecting the postfile.exe component. This weakness stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied data before processing file operations. The vulnerability manifests when the attfile parameter receives a .. (dot dot) sequence, which enables attackers to manipulate file paths and potentially access or modify files outside the intended directory structure. Such directory traversal vulnerabilities are classified under CWE-22 according to the Common Weakness Enumeration catalog, which specifically addresses improper limitation of a pathname to a restricted directory.
The technical implementation of this vulnerability exploits the fundamental flaw in how the web server processes file upload requests through the postfile.exe utility. When a remote attacker submits a malicious request containing directory traversal sequences in the attfile parameter, the server fails to validate or sanitize the input, allowing the attacker to navigate beyond the designated upload directory. This misconfiguration creates an opportunity for arbitrary file writing operations, potentially enabling attackers to overwrite critical system files, inject malicious code, or gain unauthorized access to sensitive data. The attack vector operates entirely through HTTP requests, making it accessible over the network without requiring any local system access or authentication.
The operational impact of this vulnerability extends beyond simple file manipulation to encompass significant security implications for affected systems. Attackers can leverage this weakness to perform unauthorized file system operations, potentially leading to complete system compromise through the execution of malicious code or the corruption of critical system components. The vulnerability affects not only the confidentiality and integrity of data but also the availability of the web server service itself, as malicious file operations could render the server unstable or inaccessible. This type of vulnerability aligns with tactics described in the MITRE ATT&CK framework under the T1059.007 technique for command and scripting interpreter, specifically when attackers utilize web-based attack vectors to execute arbitrary code through file system manipulation.
Mitigation strategies for CVE-2004-2380 should prioritize immediate patching of the Twilight Utilities Web Server to a version that properly validates and sanitizes input parameters. Organizations should implement robust input validation measures that filter out directory traversal sequences such as .. and similar path manipulation attempts. Network segmentation and access controls should be enforced to limit exposure of vulnerable web applications to untrusted networks. Additionally, implementing proper file system permissions and restricting write access to upload directories can significantly reduce the potential impact of such vulnerabilities. Security monitoring should include detection of suspicious file operations and unusual patterns in file upload requests to identify potential exploitation attempts. The vulnerability demonstrates the importance of proper secure coding practices and input validation as outlined in industry standards for web application security.