CVE-2018-7532 in G-Cam EFD-2250
Summary
by MITRE
Unauthentication vulnerabilities have been identified in Geutebruck G-Cam/EFD-2250 Version 1.12.0.4 and Topline TopFD-2125 Version 3.15.1 IP cameras, which may allow remote code execution.
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Analysis
by VulDB Data Team • 02/06/2021
The vulnerability CVE-2018-7532 represents a critical authentication bypass flaw affecting IP camera firmware versions from Geutebruck and Topline manufacturers. This security weakness resides in the authentication mechanisms of networked video surveillance devices, specifically targeting the G-Cam/EFD-2250 series version 1.12.0.4 and TopFD-2125 series version 3.15.1. The flaw enables attackers to bypass the standard authentication process without requiring valid credentials, creating a pathway for unauthorized access to device management interfaces. Such vulnerabilities are particularly dangerous in security infrastructure contexts where cameras serve as critical components of surveillance systems, often deployed in sensitive locations including corporate facilities, government buildings, and industrial sites. The authentication bypass allows threat actors to gain full administrative control over affected devices, potentially enabling them to manipulate video feeds, modify device configurations, or even use the cameras as entry points for broader network infiltration. This vulnerability aligns with CWE-287, which addresses improper authentication issues in software systems, and demonstrates how weak authentication mechanisms can create severe security implications in networked devices. The remote code execution capability associated with this flaw means attackers can execute arbitrary code on the affected devices, potentially leading to complete system compromise and persistent backdoor access. The vulnerability's impact extends beyond individual device compromise as these cameras often form part of larger surveillance networks, making them attractive targets for attackers seeking to establish footholds within organizational networks. According to ATT&CK framework, this vulnerability maps to T1071.004 for application layer protocol usage and T1059 for command and scripting interpreter, as attackers can leverage the compromised devices to execute malicious commands and scripts. The flaw likely stems from improper handling of authentication tokens or session management, allowing attackers to forge valid authentication requests or exploit weak cryptographic implementations. Given the widespread deployment of these camera models in critical infrastructure environments, the vulnerability poses significant risk to organizations relying on these devices for security monitoring and surveillance operations. The affected devices typically lack proper input validation and authentication state management, creating opportunities for attackers to manipulate authentication flows and gain unauthorized administrative access. Organizations should immediately implement network segmentation to isolate these devices from critical systems and apply firmware updates as provided by manufacturers to address the authentication bypass vulnerability. Security monitoring should include detection of unusual authentication patterns and unauthorized access attempts to these surveillance devices, as the vulnerability can be exploited without requiring any prior knowledge of valid credentials.
The technical exploitation of CVE-2018-7532 demonstrates how insufficient authentication controls can create cascading security risks in networked devices. Attackers can leverage this vulnerability to gain administrative access without presenting valid credentials, effectively neutralizing the security boundary that authentication mechanisms are designed to enforce. The flaw's classification under CWE-287 emphasizes the fundamental weakness in authentication implementation, where proper credential validation fails to occur, allowing unauthorized access to privileged functions. This vulnerability represents a classic case of authentication bypass through improper session management or weak cryptographic token handling, where attackers can manipulate the authentication flow to gain system-level privileges. The remote code execution capability means that once authentication is bypassed, attackers can upload malicious firmware, modify device configurations, or establish persistent access points within the network infrastructure. The impact of this vulnerability extends to various ATT&CK techniques including T1068 for local privilege escalation and T1021.001 for remote services, as compromised cameras can be used as launching points for further attacks. Network traffic analysis should reveal suspicious authentication attempts or malformed requests that may indicate exploitation attempts against these vulnerable devices. The vulnerability's exploitation requires minimal knowledge of the target system, making it particularly dangerous as it can be automated and used in large-scale attacks against multiple devices. Organizations should consider implementing network access controls and firewall rules to restrict access to these devices from untrusted networks, while also monitoring for unusual behavior patterns in camera network traffic that might indicate exploitation attempts.
Mitigation strategies for CVE-2018-7532 should focus on immediate firmware updates and network security hardening measures. Device manufacturers have released patches to address the authentication bypass vulnerability, and organizations must prioritize applying these updates across all affected camera models. The remediation process requires careful planning to avoid disrupting surveillance operations, as device downtime may leave critical security monitoring gaps. Network segmentation represents a crucial defensive measure, isolating IP cameras from core network infrastructure and limiting potential lateral movement if a device is compromised. Security professionals should implement continuous monitoring of authentication logs and network traffic to detect anomalous patterns that may indicate exploitation attempts. Access controls should be enforced at multiple levels including network access control lists, firewall rules, and device-specific access restrictions to minimize the attack surface. The vulnerability highlights the importance of secure device configuration practices, including disabling unnecessary services and ports, implementing strong password policies, and regularly auditing device access controls. Organizations should also consider deploying intrusion detection systems specifically configured to monitor for exploitation attempts targeting these surveillance devices. The implementation of network monitoring tools capable of detecting unusual authentication patterns or unauthorized access attempts provides early warning capabilities for potential exploitation. Additionally, regular security assessments of networked devices should include vulnerability scanning focused on authentication mechanisms and privilege escalation paths. The ATT&CK framework suggests implementing defensive measures such as process monitoring and command execution restrictions to prevent exploitation of this vulnerability. Security teams should also establish incident response procedures specifically addressing compromised surveillance devices, ensuring rapid containment and remediation of exploitation attempts. The vulnerability serves as a reminder of the critical need for robust authentication mechanisms in Internet of Things devices, where weak security controls can create significant risks to overall network security posture.