CVE-2017-2805 in C1 Indoor HD Camera
Summary
by MITRE
An exploitable stack-based buffer overflow vulnerability exists in the web management interface used by the Foscam C1 Indoor HD Camera. A specially crafted http request can cause a stack-based buffer overflow resulting in overwriting arbitrary data on the stack frame. An attacker can simply send an http request to the device to trigger this vulnerability.
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Analysis
by VulDB Data Team • 12/08/2022
The CVE-2017-2805 vulnerability represents a critical stack-based buffer overflow flaw within the web management interface of Foscam C1 Indoor HD Camera devices, classified under CWE-121 as a stack-based buffer overflow. This vulnerability specifically affects the camera's HTTP request handling mechanism where the device fails to properly validate input lengths before copying data to fixed-size stack buffers. The flaw manifests when an attacker crafts a malicious HTTP request that exceeds the allocated buffer space, leading to memory corruption that can overwrite adjacent stack variables and potentially executable code.
The technical exploitation of this vulnerability occurs through the manipulation of HTTP request parameters that are processed by the camera's web interface. When the device receives an oversized request, the insufficient bounds checking allows the input data to overflow into adjacent memory locations within the stack frame, potentially corrupting return addresses, saved registers, and other critical stack data. This type of buffer overflow creates an opportunity for arbitrary code execution, as the overwritten return address can be manipulated to redirect program execution flow to attacker-controlled code.
The operational impact of CVE-2017-2805 extends beyond simple denial of service to encompass full system compromise and unauthorized access to the device. Attackers can leverage this vulnerability to execute arbitrary commands on the camera, potentially gaining persistent access to the network, performing reconnaissance activities, or using the compromised device as a pivot point for further attacks. The vulnerability affects the camera's management interface, which typically operates on standard HTTP ports, making it accessible to remote attackers without requiring physical access or specialized equipment. This remote exploit capability places the vulnerability in the ATT&CK matrix under initial access and execution phases, specifically targeting network services and web applications.
Security mitigation for CVE-2017-2805 requires immediate firmware updates from Foscam to address the buffer overflow in the web interface implementation. Network administrators should implement network segmentation to isolate IP cameras from critical network segments and restrict access to camera management interfaces through firewalls and access control lists. Additional defensive measures include disabling unnecessary network services, implementing network monitoring to detect anomalous HTTP traffic patterns, and conducting regular vulnerability assessments of networked devices. The vulnerability highlights the importance of proper input validation and bounds checking in embedded web applications, aligning with security best practices outlined in NIST SP 800-53 and OWASP Top 10 security guidelines for web application security.