CVE-2000-0376 in Filo
Summary
by MITRE
Buffer overflow in the HTTP proxy server for the i-drive Filo software allows remote attackers to execute arbitrary commands via a long HTTP GET request.
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Analysis
by VulDB Data Team • 05/25/2018
The vulnerability identified as CVE-2000-0376 represents a critical buffer overflow flaw within the HTTP proxy server component of i-drive Filo software, a network storage solution designed for enterprise environments. This vulnerability resides in the software's handling of HTTP GET requests, specifically when processing overly long or malformed request strings that exceed the allocated buffer space. The flaw manifests when the proxy server fails to properly validate input length before copying data into fixed-size memory buffers, creating a condition where attacker-controlled data can overwrite adjacent memory locations.
The technical implementation of this buffer overflow occurs at the application layer where the HTTP proxy server receives and processes client requests. When an attacker submits a specially crafted HTTP GET request containing an excessive number of characters in the URL or request parameters, the software's input validation mechanism proves insufficient to prevent the overflow condition. This vulnerability directly maps to CWE-121, which describes stack-based buffer overflow conditions, and potentially CWE-122, representing heap-based buffer overflow scenarios. The flaw enables attackers to manipulate the program's execution flow by overwriting return addresses and function pointers stored in memory, potentially allowing for arbitrary code execution.
From an operational perspective, this vulnerability presents a significant threat to organizations utilizing i-drive Filo software as their primary network storage solution. Remote attackers can exploit this weakness without requiring authentication credentials, making the attack surface particularly dangerous for enterprise environments where such systems are often exposed to untrusted networks. The successful exploitation allows adversaries to execute arbitrary commands on the affected system with the privileges of the proxy server process, potentially leading to complete system compromise. This vulnerability aligns with ATT&CK technique T1203, which describes exploitation of remote services, and T1059, covering command and scripting interpreters. Organizations may face severe consequences including data exfiltration, system takeover, and disruption of critical network storage services.
Mitigation strategies for this vulnerability require immediate action including applying vendor patches or updates that address the buffer overflow condition through proper input validation and memory management. System administrators should implement network segmentation to limit access to the proxy server and deploy intrusion detection systems to monitor for suspicious HTTP GET request patterns. Additionally, input validation should be strengthened at multiple layers including application-level filtering, web application firewalls, and network-based security controls. The vulnerability demonstrates the critical importance of proper buffer management and input validation in network services, highlighting how seemingly simple flaws can lead to complete system compromise. Organizations should also consider implementing automated patch management processes to ensure timely deployment of security updates and establish robust security testing procedures for network applications.