CVE-2017-11389 in Control Manager
Summary
by MITRE
Directory traversal vulnerability in Trend Micro Control Manager 6.0 allows remote code execution by attackers able to drop arbitrary files in a web-facing directory. Formerly ZDI-CAN-4684.
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Analysis
by VulDB Data Team • 01/07/2021
The vulnerability identified as CVE-2017-11389 represents a critical directory traversal flaw within Trend Micro Control Manager version 6.0, specifically impacting the web-facing components of the system. This weakness enables remote attackers to execute arbitrary code by leveraging their ability to place malicious files in directories accessible via the web interface. The vulnerability stems from insufficient input validation and improper file handling mechanisms within the application's file upload and processing functions, creating a pathway for attackers to manipulate file paths and gain unauthorized access to the underlying system. The issue was previously catalogued as ZDI-CAN-4684, indicating its recognition by the Zero Day Initiative vulnerability database. This directory traversal vulnerability fundamentally compromises the security boundaries of the web application, allowing attackers to bypass normal access controls and potentially escalate privileges to execute malicious payloads with elevated system permissions.
The technical implementation of this vulnerability exploits the application's failure to properly sanitize user-supplied input when processing file operations within web-accessible directories. Attackers can manipulate file path parameters to traverse directories beyond the intended boundaries, potentially accessing sensitive system files or injecting malicious code into the web server's document root. The flaw typically manifests when the application accepts file upload requests without adequate validation of the file paths or when it fails to properly resolve relative paths, enabling attackers to craft malicious requests that target system directories. This type of vulnerability maps directly to CWE-22, which categorizes path traversal attacks as a fundamental weakness in input validation. The impact is amplified by the fact that the vulnerability allows for remote code execution, meaning attackers can operate entirely from external networks without requiring physical access to the system. The exploitation process often involves creating specially crafted file names or upload parameters that, when processed by the vulnerable application, result in the execution of arbitrary code within the context of the web server process.
The operational implications of CVE-2017-11389 extend far beyond simple data theft, as it provides attackers with complete control over the affected system. Once exploited, attackers can establish persistent backdoors, install additional malware, or use the compromised system as a launchpad for further attacks within the network infrastructure. The vulnerability's remote execution capability means that attackers can exploit it from anywhere on the internet, making it particularly dangerous for organizations that expose their web applications to public networks. The attack surface is further expanded by the fact that the vulnerability requires minimal privileges to exploit, as it leverages existing web-facing services rather than requiring authentication to the system itself. This makes it an attractive target for automated attacks and botnets seeking to compromise vulnerable systems at scale. Organizations using Trend Micro Control Manager 6.0 are particularly at risk since this vulnerability can be exploited without requiring complex attack chains or specialized knowledge of the system architecture, making it accessible to threat actors with varying skill levels. The vulnerability also aligns with ATT&CK technique T1059, which covers command and script interpreter, as attackers can execute commands through the compromised web application interface.
Mitigation strategies for this vulnerability require immediate action to address the root cause through proper input validation and secure file handling practices. Organizations should implement comprehensive patch management procedures to ensure all systems running Trend Micro Control Manager 6.0 are updated with the vendor-provided security patches. Network segmentation and access controls should be implemented to limit exposure of the web-facing components to untrusted networks, while also applying strict file upload restrictions and validating all user-supplied input. The implementation of web application firewalls and intrusion detection systems can help detect and prevent exploitation attempts targeting this vulnerability. Additionally, organizations should conduct regular security assessments of their web applications to identify similar path traversal vulnerabilities in other systems. The security controls should include monitoring for unusual file access patterns and implementing least privilege principles for web server processes to limit the potential damage from successful exploitation. Regular security awareness training for system administrators and developers is also crucial to prevent similar vulnerabilities from being introduced in future applications. The vulnerability highlights the importance of following secure coding practices and adhering to industry standards such as those outlined in the OWASP Top Ten and NIST cybersecurity guidelines to prevent directory traversal attacks. Organizations should also maintain comprehensive incident response procedures that include specific protocols for handling remote code execution vulnerabilities, ensuring rapid detection and remediation of similar threats.