CVE-2018-7516 in G-Cam EFD-2250
Summary
by MITRE
A server-side request forgery vulnerability has been identified in Geutebruck G-Cam/EFD-2250 Version 1.12.0.4 and Topline TopFD-2125 Version 3.15.1 IP cameras, which could lead to proxied network scans.
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Analysis
by VulDB Data Team • 01/25/2020
The vulnerability CVE-2018-7516 represents a critical server-side request forgery flaw affecting IP camera firmware from Geutebruck and Topline vendors. This weakness exists in the G-Cam/EFD-2250 version 1.12.0.4 and TopFD-2125 version 3.15.1 camera models, creating a significant security risk for networked surveillance deployments. The vulnerability stems from inadequate input validation within the camera's web interface handling of remote resource requests, allowing malicious actors to manipulate the device's behavior through crafted HTTP requests.
The technical implementation of this flaw enables attackers to leverage the camera's network connectivity to perform unauthorized requests to internal network resources. When the camera processes user-supplied URLs or network addresses, it fails to properly validate or sanitize the input, creating an environment where arbitrary network communication can be initiated through the device. This vulnerability specifically manifests in the camera's handling of proxy requests, where the device acts as an intermediary to forward requests to other network hosts without proper access controls or destination validation.
From an operational perspective, this vulnerability poses severe implications for network security infrastructure. Attackers can exploit the SSRF weakness to conduct network reconnaissance by scanning internal network segments that would normally be protected by firewalls or network segmentation. The camera can be coerced into making HTTP requests to internal services, potentially revealing sensitive information about network topology, internal IP addresses, or even accessing other vulnerable internal systems. This capability transforms a single compromised camera into a potential reconnaissance tool for broader network attacks.
The impact extends beyond simple information disclosure, as this vulnerability aligns with several ATT&CK framework techniques including T1046 Network Service Scanning and T1566 Phishing. The vulnerability maps to CWE-918 Server-Side Request Forgery, which specifically addresses weaknesses in applications that fail to properly validate and sanitize user-supplied URLs or network addresses. Organizations deploying these camera models face potential exposure to lateral movement attacks where the compromised device becomes a pivot point for accessing other network resources. The vulnerability is particularly concerning in industrial control systems and enterprise environments where network segmentation is crucial for maintaining security boundaries.
Mitigation strategies should include immediate firmware updates from vendors to address the SSRF vulnerability, network segmentation to isolate affected devices from critical internal systems, and implementation of web application firewalls or proxy configurations that can filter and validate network requests. Security monitoring should be enhanced to detect unusual network activity patterns that might indicate exploitation attempts, while access controls should be strengthened to limit administrative privileges and network access for these devices. Regular security assessments of networked devices and implementation of principle of least privilege configurations can help reduce the overall attack surface and limit potential damage from similar vulnerabilities.