CVE-2000-1170 in Netsnap
Summary
by MITRE
Buffer overflow in Netsnap webcam HTTP server before 1.2.9 allows remote attackers to execute arbitrary commands via a long GET request.
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Analysis
by VulDB Data Team • 10/11/2025
The vulnerability identified as CVE-2000-1170 represents a critical buffer overflow flaw within the Netsnap webcam HTTP server software prior to version 1.2.9. This security weakness resides in the server's handling of HTTP GET requests, specifically when processing excessively long parameter strings that exceed the allocated buffer space. The flaw stems from inadequate input validation and bounds checking mechanisms within the web server's request processing logic, creating a condition where maliciously crafted HTTP requests can overwrite adjacent memory locations. The vulnerability operates under CWE-121, which categorizes buffer overflow conditions where insufficient bounds checking allows attackers to overwrite memory regions, potentially leading to arbitrary code execution. This type of vulnerability falls squarely within the ATT&CK technique T1190 for Exploit Public-Facing Application, as it targets a publicly accessible web server component that can be exploited from remote locations without requiring authentication or privileged access.
The technical implementation of this buffer overflow occurs when the Netsnap webcam server receives a GET request containing an overly long parameter string that surpasses the predetermined buffer size allocated for request processing. When the server attempts to copy this excessive data into the fixed-size buffer, it overflows into adjacent memory regions, potentially corrupting the program's execution flow. Attackers can leverage this condition by crafting specially designed HTTP GET requests that include malicious payloads within the parameter strings, allowing them to overwrite return addresses or function pointers in the call stack. The overflow can be exploited to redirect program execution to malicious code injected into the buffer or to overwrite existing program state, ultimately enabling remote code execution on the affected system. The vulnerability's impact is amplified by the fact that the web server operates on a publicly accessible port, making it susceptible to exploitation by anyone with network access to the device.
The operational consequences of this vulnerability extend beyond simple remote code execution, as it provides attackers with complete control over the affected webcam server. Once exploited, attackers can execute arbitrary commands with the privileges of the web server process, which typically runs with system-level permissions on the device. This level of access allows adversaries to install backdoors, modify system configurations, access stored video feeds, or use the compromised device as a pivot point for further attacks within the local network. The vulnerability's exploitation requires minimal technical expertise and can be automated through readily available tools, making it particularly dangerous for unpatched devices deployed in residential or commercial environments. Organizations managing multiple webcam devices are particularly at risk, as a single vulnerable device can serve as an entry point for broader network infiltration, potentially compromising other connected systems through lateral movement techniques described in ATT&CK framework under T1021 for Remote Services.
Mitigation strategies for CVE-2000-1170 primarily focus on immediate software patching and network segmentation measures. The most effective remediation involves upgrading the Netsnap webcam server to version 1.2.9 or later, which includes proper input validation and bounds checking mechanisms that prevent buffer overflow conditions. Network administrators should also implement firewall rules to restrict access to the webcam server's HTTP ports from untrusted networks, while ensuring that only authorized personnel have access to the device management interfaces. Additional protective measures include disabling unnecessary services, implementing intrusion detection systems to monitor for suspicious HTTP requests, and conducting regular security audits of networked devices. The vulnerability serves as a classic example of why input validation is critical in network services, and its exploitation demonstrates the importance of maintaining up-to-date firmware and software versions across all networked devices, particularly those with exposed web interfaces that are commonly targeted by automated scanning tools.