CVE-2012-4944 in FleetCommander Kiosk
Summary
by MITRE
Multiple unrestricted file upload vulnerabilities in Agile FleetCommander and FleetCommander Kiosk before 4.08 allow remote attackers to execute arbitrary code by uploading a file via an unspecified page.
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Analysis
by VulDB Data Team • 08/11/2024
The vulnerability identified as CVE-2012-4944 represents a critical security flaw affecting Agile FleetCommander and FleetCommander Kiosk versions prior to 4.08. This issue stems from unrestricted file upload capabilities that enable remote attackers to bypass normal security controls and introduce malicious content into the system. The vulnerability exists within an unspecified page of the application, making it particularly dangerous as attackers can exploit this weakness without specific knowledge of the exact upload endpoint. Such unrestricted file upload vulnerabilities are classified under CWE-434, which specifically addresses the scenario where applications accept files from untrusted sources without proper validation or sanitization, creating an attack surface that can be leveraged for arbitrary code execution.
The technical implementation of this vulnerability allows malicious actors to upload files that can be executed by the application or web server, potentially leading to complete system compromise. When users upload files through the vulnerable interface, the system fails to properly validate file types, extensions, or content, enabling attackers to submit executable scripts, web shells, or other malicious payloads. This flaw operates at the intersection of multiple security domains including input validation, file handling, and access control mechanisms. The lack of proper file type checking and content verification creates a pathway for attackers to escalate privileges and gain unauthorized access to system resources, often leading to persistent backdoor installations that can be used for long-term unauthorized access.
The operational impact of CVE-2012-4944 extends far beyond simple data theft or service disruption, as it provides attackers with the capability to establish persistent access to the affected systems. Organizations using vulnerable versions of Agile FleetCommander and FleetCommander Kiosk face significant risk of complete system compromise, including potential data exfiltration, system modification, and the establishment of covert communication channels. The vulnerability's remote exploitability means that attackers can leverage this weakness from anywhere on the internet without requiring physical access to the network. This characteristic aligns with ATT&CK technique T1190, which describes the use of remote services for initial access, and T1059, which covers execution through command and scripting interpreters, both of which can be facilitated by unrestricted file upload vulnerabilities.
Mitigation strategies for this vulnerability require immediate patching of affected systems to version 4.08 or later, which contains the necessary security fixes. Organizations should implement comprehensive file upload validation mechanisms including strict file type filtering, content inspection, and mandatory file extension restrictions. The implementation of proper access controls and least privilege principles can significantly reduce the impact of successful exploitation attempts. Security monitoring should be enhanced to detect unusual file upload patterns and suspicious activities in the application logs. Additionally, network segmentation and firewall rules should be configured to limit access to the vulnerable application, and regular security assessments should be conducted to identify similar vulnerabilities in other applications. The remediation process should also include comprehensive user education regarding the dangers of uploading unknown files and the importance of maintaining up-to-date security patches across all system components.