CVE-2017-2847 in C1 Indoor HD Camera
Summary
by MITRE
In the web management interface in Foscam C1 Indoor HD cameras with application firmware 2.52.2.37, a specially crafted HTTP request can allow for a user to inject arbitrary shell characters during manual network configuration resulting in command injection. An attacker can simply send an HTTP request to the device to trigger this vulnerability.
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Analysis
by VulDB Data Team • 12/09/2022
The CVE-2017-2847 vulnerability affects Foscam C1 Indoor HD security cameras running firmware version 2.52.2.37, specifically targeting the web management interface component. This issue represents a critical command injection flaw that allows remote attackers to execute arbitrary shell commands on the affected device through carefully crafted HTTP requests. The vulnerability exists within the manual network configuration functionality of the camera's web interface, making it particularly dangerous as it can be exploited without requiring authentication or physical access to the device.
The technical flaw stems from inadequate input validation and sanitization within the web management interface of the Foscam camera. When users manually configure network settings through the web interface, the system fails to properly sanitize user-supplied input parameters before processing them in shell commands. This allows an attacker to inject malicious shell characters and commands directly into the network configuration parameters, which are then executed by the underlying operating system. The vulnerability is classified as a command injection flaw under CWE-77, which specifically addresses situations where untrusted data is incorporated into shell commands without proper sanitization. The attack vector is straightforward as it requires only sending a specially crafted HTTP request to the device's web management interface.
The operational impact of this vulnerability is severe and multifaceted for affected organizations. An attacker who successfully exploits this vulnerability can gain complete control over the camera device, potentially using it as a foothold for further network exploration and lateral movement. The compromised camera can serve as a pivot point for attacking other devices on the same network segment, making it particularly dangerous in enterprise environments. Additionally, attackers can use the compromised device to conduct surveillance activities, potentially accessing live video feeds or manipulating camera settings to avoid detection. The vulnerability also violates fundamental security principles outlined in the MITRE ATT&CK framework, specifically relating to the execution of commands through web interfaces and the use of compromised network devices as attack vectors. Organizations may face significant security implications including unauthorized access to sensitive video surveillance data, potential data breaches, and increased risk of further network compromise.
Mitigation strategies for this vulnerability should include immediate firmware updates from Foscam to address the command injection flaw, as well as network-level controls to restrict access to the camera's web management interface. Organizations should implement network segmentation to isolate security cameras from critical business systems, and deploy intrusion detection systems to monitor for suspicious HTTP requests targeting these devices. The principle of least privilege should be applied by restricting access to camera management interfaces to authorized personnel only, and network administrators should consider disabling unnecessary web management features when not actively required. Additionally, regular security assessments of network-connected devices should be conducted to identify similar vulnerabilities in other IoT equipment, as this type of command injection vulnerability is common in embedded systems and network appliances. The vulnerability also highlights the importance of secure coding practices and input validation in embedded systems, aligning with security standards that emphasize the need for proper sanitization of user inputs to prevent injection attacks.