CVE-2005-0575 in Knet
Summary
by MITRE
Buffer overflow in Stormy Studios Knet 1.04c and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long HTTP GET request.
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Analysis
by VulDB Data Team • 07/06/2018
The vulnerability identified as CVE-2005-0575 represents a critical buffer overflow flaw affecting Stormy Studios Knet version 1.04c and earlier implementations. This security weakness resides within the HTTP GET request processing mechanism of the Knet software, which fails to properly validate input length before attempting to store incoming data in fixed-size memory buffers. The flaw manifests when remote attackers submit maliciously crafted HTTP GET requests containing excessive data payloads that exceed the allocated buffer boundaries, creating exploitable conditions that can be leveraged for both denial of service and potential code execution.
The technical implementation of this vulnerability stems from improper input validation and memory management practices within the Knet application's web server component. When processing HTTP GET requests, the software allocates a predetermined buffer size to accommodate incoming URL parameters and request data without performing adequate length checks or bounds verification. This fundamental flaw aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, covering heap-based buffer overflow scenarios. The vulnerability operates at the application layer of the network stack, specifically targeting the HTTP protocol handling functionality that processes user requests directed to the affected service.
The operational impact of this vulnerability extends beyond simple service disruption to potentially enable remote code execution capabilities. Attackers can exploit the buffer overflow by crafting specially formatted HTTP GET requests that overwrite adjacent memory locations, potentially allowing them to inject and execute malicious code within the context of the running Knet service. The denial of service component occurs when the overflow causes the application to crash or become unresponsive, while the code execution aspect represents a more severe compromise that could allow full system control. This vulnerability affects the availability and integrity of the targeted service, potentially enabling attackers to establish persistent access or escalate privileges within the compromised environment.
Mitigation strategies for CVE-2005-0575 require immediate implementation of software updates and patches provided by Stormy Studios to address the buffer overflow conditions. Organizations should implement network segmentation and access controls to limit exposure to the affected service, while also deploying intrusion detection systems to monitor for suspicious HTTP GET request patterns. The remediation approach aligns with ATT&CK technique T1203, which involves exploiting software vulnerabilities to gain unauthorized access, making proactive patch management essential. Additionally, implementing input validation controls, enabling stack protection mechanisms, and conducting regular security assessments of web applications can help prevent similar buffer overflow vulnerabilities from occurring in other systems. Network administrators should also consider implementing rate limiting and request size restrictions to provide additional defense-in-depth measures against exploitation attempts.