CVE-2001-0282 in SEDUM HTTP Server
Summary
by MITRE
SEDUM 2.1 HTTP server allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long HTTP request.
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Analysis
by VulDB Data Team • 10/07/2025
The vulnerability identified as CVE-2001-0282 affects SEDUM 2.1 HTTP server implementations, representing a critical security flaw that exposes systems to remote exploitation. This vulnerability resides within the server's handling of HTTP request processing, specifically targeting the server's ability to manage incoming requests of excessive length. The issue stems from inadequate input validation mechanisms within the HTTP server's request parsing functionality, creating a pathway for malicious actors to exploit the system's resource management capabilities.
The technical flaw manifests through buffer overflow conditions that occur when the SEDUM 2.1 server processes HTTP requests exceeding predetermined length thresholds. When an attacker sends a malformed HTTP request containing an excessive number of characters or specially crafted data sequences, the server's internal buffers fail to properly handle the overflow condition. This weakness directly maps to CWE-121, which describes heap-based buffer overflow conditions, and CWE-122, which addresses stack-based buffer overflow vulnerabilities. The server's insufficient memory management and lack of proper bounds checking create an environment where malicious input can cause the application to crash or behave unpredictably.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable remote code execution. Attackers can leverage this weakness to crash the HTTP server process, resulting in complete service unavailability for legitimate users. More critically, the buffer overflow condition may allow attackers to inject and execute arbitrary code on the affected system, providing them with unauthorized access to the server environment. This capability aligns with ATT&CK technique T1203, which describes exploitation of software vulnerabilities for remote code execution, and T1499, which covers network denial of service attacks. The vulnerability affects systems running SEDUM 2.1 HTTP server software, particularly those exposed to untrusted network traffic.
Mitigation strategies for CVE-2001-0282 require immediate implementation of multiple defensive measures to protect affected systems. Organizations should prioritize upgrading to patched versions of SEDUM 2.1 or migrating to more secure HTTP server implementations such as Apache HTTP Server or Microsoft IIS. Network-level protections including firewall rules that limit HTTP request sizes and implement rate limiting can provide temporary safeguards while permanent fixes are deployed. Input validation controls should be implemented at the application level to reject excessively long HTTP requests before they reach the vulnerable parsing components. Additionally, implementing intrusion detection systems that monitor for unusual HTTP request patterns and establishing robust logging mechanisms for security event monitoring can help detect exploitation attempts. The vulnerability serves as a reminder of the critical importance of proper input validation and memory management in network server applications, particularly when dealing with user-supplied data from untrusted sources.