CVE-2013-3690 in OB-100Ae
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in cgi-bin/users.cgi in Brickcom FB-100Ap, WCB-100Ap, MD-100Ap, WFB-100Ap, OB-100Ae, OSD-040E, and possibly other camera models with firmware 3.1.0.8 and earlier, allows remote attackers to hijack the authentication of administrators for requests that add users.
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Analysis
by VulDB Data Team • 03/04/2025
The CVE-2013-3690 vulnerability represents a critical cross-site request forgery flaw affecting multiple Brickcom network video camera models including FB-100Ap, WCB-100Ap, MD-100Ap, WFB-100Ap, OB-100Ae, and OSD-040E. This vulnerability exists within the cgi-bin/users.cgi script component of affected devices running firmware versions 3.1.0.8 and earlier, creating a significant security risk for networked surveillance systems. The flaw specifically allows remote attackers to manipulate administrative authentication sessions through crafted requests that add new user accounts, effectively enabling unauthorized privilege escalation without proper authentication credentials.
The technical implementation of this CSRF vulnerability stems from the absence of proper anti-CSRF protection mechanisms within the Brickcom camera web interface. When administrators perform legitimate administrative tasks through the web-based management interface, the system fails to validate that requests originate from authorized sources. Attackers can exploit this by crafting malicious web pages or email attachments that automatically submit requests to the vulnerable cgi-bin/users.cgi endpoint, leveraging the administrator's existing authenticated session to add new user accounts with elevated privileges. This attack vector operates entirely outside the normal user interaction flow, making detection particularly challenging for network administrators.
The operational impact of this vulnerability extends beyond simple unauthorized user creation, as it fundamentally compromises the integrity of the camera's access control mechanisms. An attacker who successfully exploits this vulnerability can establish persistent access to the surveillance system, potentially leading to complete system compromise. The affected devices typically serve as critical components in security infrastructure, making this vulnerability particularly dangerous for organizations relying on these cameras for perimeter security, monitoring, or access control. The vulnerability affects not just individual devices but entire surveillance networks, as compromised cameras can serve as entry points for broader network infiltration attempts. Organizations using these devices face potential data breaches, unauthorized surveillance access, and complete loss of control over their security infrastructure.
Mitigation strategies for CVE-2013-3690 should prioritize immediate firmware updates from Brickcom to address the underlying CSRF implementation flaws. Network administrators should implement additional security measures including network segmentation to isolate affected devices from critical systems, deployment of web application firewalls to monitor and filter suspicious requests, and regular security audits of device configurations. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications, and maps to ATT&CK technique T1566.001 for credential access through phishing attacks that could leverage this CSRF vulnerability. Organizations should also consider implementing multi-factor authentication where possible, monitoring for unusual user account creation patterns, and establishing robust incident response procedures to quickly identify and remediate potential exploitation attempts.