CVE-2014-6037 in EventLog Analyzer
Summary
by MITRE
Directory traversal vulnerability in the agentUpload servlet in ZOHO ManageEngine EventLog Analyzer 9.0 build 9002 and 8.2 build 8020 allows remote attackers to execute arbitrary code by uploading a ZIP file which contains an executable file with .. (dot dot) sequences in its name, then accessing the executable via a direct request to the file under the web root.
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Analysis
by VulDB Data Team • 10/14/2024
The vulnerability CVE-2014-6037 represents a critical directory traversal flaw in ZOHO ManageEngine EventLog Analyzer versions 9.0 build 9002 and 8.2 build 8020. This vulnerability resides within the agentUpload servlet component which processes file uploads from remote attackers. The flaw stems from inadequate input validation and path sanitization mechanisms that fail to properly handle malicious file names containing directory traversal sequences. When an attacker uploads a ZIP file containing an executable with .. (dot dot) sequences in its filename, the system fails to properly resolve the file path, allowing the malicious file to be placed in unintended directories within the web root structure. This vulnerability directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability is severe as it enables remote code execution capabilities for attackers who can leverage this flaw to gain unauthorized access to the underlying system. By carefully crafting ZIP file names with directory traversal sequences, attackers can place malicious executables in locations where they can be directly accessed via HTTP requests. This allows for arbitrary code execution with the privileges of the web application server, potentially leading to complete system compromise. The vulnerability operates through the principle of insufficient input sanitization, where the application fails to properly validate file paths before processing uploaded content. This weakness aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1566.001 for valid accounts, as attackers can leverage the web server's execution capabilities to run malicious code.
The exploitation process involves uploading a specially crafted ZIP file containing an executable with traversal sequences in its filename, followed by direct HTTP requests to access the placed executable file. This attack vector demonstrates a classic path traversal vulnerability where the system's file handling logic does not properly sanitize user-supplied paths. The vulnerability affects the web application's file upload functionality and lacks proper path validation mechanisms that would prevent directory traversal attempts. Security researchers have identified this as a significant risk to web applications that fail to implement proper input validation and path resolution controls. Organizations using affected versions should immediately implement mitigations including input validation, proper file path sanitization, and access controls to prevent unauthorized file placement in critical directories. The vulnerability underscores the importance of implementing secure coding practices and adhering to security standards that address improper path handling and input validation to prevent similar issues in web applications.
This vulnerability highlights the critical need for comprehensive security testing of file upload mechanisms and proper implementation of path validation controls. The flaw demonstrates how seemingly simple input validation can lead to severe security consequences when not properly addressed. Organizations should conduct regular security assessments of their web applications to identify similar path traversal vulnerabilities and implement appropriate controls such as file type restrictions, proper path resolution, and access control mechanisms to prevent exploitation. The vulnerability serves as a reminder of the importance of following secure coding practices and implementing defense-in-depth strategies to protect against directory traversal attacks.