CVE-2013-2682 in Linksys E4200
Summary
by MITRE
Cisco Linksys E4200 1.0.05 Build 7 devices contain a Clickjacking Vulnerability which allows remote attackers to obtain sensitive information.
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Analysis
by VulDB Data Team • 06/15/2024
The Cisco Linksys E4200 wireless router running firmware version 1.0.05 Build 7 presents a critical clickjacking vulnerability that compromises the security of network administrators and users. This vulnerability stems from the router's web-based management interface failing to implement proper clickjacking protection mechanisms, allowing malicious actors to execute unauthorized actions through deceptive user interface interactions. The flaw exists within the authentication and authorization framework of the device's administrative portal, where legitimate user interactions can be hijacked by attackers exploiting the lack of protective measures against overlay attacks.
The technical implementation of this vulnerability involves the absence of X-Frame-Options headers and similar protective mechanisms in the web server responses serving the router's administrative interface. Attackers can craft malicious web pages that embed the router's management interface within invisible or deceptive frames, tricking authenticated users into performing unintended administrative actions. This allows remote attackers to harvest sensitive information such as administrative credentials, network configuration parameters, and other confidential data that would normally be protected within the router's secure administrative environment. The vulnerability specifically affects the device's web interface handling and lacks proper origin validation controls.
The operational impact of this clickjacking vulnerability extends beyond simple information disclosure to potentially enable complete administrative compromise of the affected devices. When an authenticated user visits a malicious website containing the crafted clickjacking payload, they may unknowingly perform administrative actions such as changing passwords, modifying network settings, or extracting sensitive configuration data. This vulnerability represents a significant risk to network security as it allows attackers to bypass traditional authentication mechanisms and gain unauthorized access to critical network infrastructure. The attack vector requires minimal privileges from the attacker, as they only need to convince a legitimate user to visit a malicious website rather than directly exploiting system vulnerabilities.
Security practitioners should implement immediate mitigations including updating the firmware to versions that address the clickjacking vulnerability, implementing network segmentation to isolate critical devices, and deploying web application firewalls that can detect and block clickjacking attempts. The vulnerability aligns with CWE-1021, which specifically addresses insufficient protection against clickjacking attacks, and maps to ATT&CK technique T1071.004 for application layer protocol: DNS, as attackers may use the compromised device to establish command and control channels. Organizations should also consider implementing security headers and frame-busting techniques to prevent similar vulnerabilities in other web applications and network devices. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar clickjacking issues in network infrastructure components.