CVE-2018-14027 in HR-3300
Summary
by MITRE
Digisol Wireless Wifi Home Router HR-3300 allows XSS via the userid or password parameter to the admin login page.
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Analysis
by VulDB Data Team • 10/17/2023
The vulnerability identified as CVE-2018-14027 affects the Digisol Wireless Wifi Home Router HR-3300 model, presenting a cross-site scripting vulnerability that specifically targets the administrative login interface. This flaw resides in the router's web-based management system where user input validation is insufficiently implemented for the userid and password parameters. The vulnerability stems from the device's failure to properly sanitize or escape user-supplied data before processing it within the web application context, creating an exploitable condition that can be leveraged by malicious actors to execute arbitrary scripts in the context of a user's browser session.
The technical nature of this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications. The flaw occurs when the router's administrative login page fails to properly validate or encode input parameters received from the userid and password fields. When a user submits login credentials through the web interface, the router processes these parameters without adequate sanitization measures, allowing potentially malicious input to be interpreted as executable code by the browser. This represents a classic reflected cross-site scripting vulnerability where the malicious payload is reflected back to the user through the application's response, specifically within the login form context.
The operational impact of this vulnerability is significant as it provides attackers with a potential entry point for unauthorized access to the router's administrative interface. An attacker could craft malicious URLs containing XSS payloads that, when clicked by an authenticated user or administrator, would execute arbitrary JavaScript code within the browser context. This could lead to session hijacking, credential theft, or more severe attacks such as redirecting users to malicious sites, modifying the router configuration, or even installing malware on the device. The vulnerability is particularly concerning because it targets the administrative login page, which is a primary attack surface for gaining control over network infrastructure.
The attack vector for this vulnerability typically involves social engineering techniques where an attacker crafts a malicious URL containing XSS payloads and tricks users into clicking the link while logged into the router's administration interface. The attack requires minimal privileges and can be executed from any device with access to the network. The vulnerability is classified under the MITRE ATT&CK framework as part of the credential access tactics, specifically targeting the web application attack surface. The impact extends beyond simple session manipulation as it can potentially enable persistent access to the network infrastructure, allowing attackers to modify firewall rules, change network settings, or monitor network traffic. Organizations should consider this vulnerability as a critical threat to network security and implement immediate mitigations.
Mitigation strategies for CVE-2018-14027 include applying firmware updates from Digisol that properly sanitize user input parameters, implementing network segmentation to limit access to administrative interfaces, and deploying web application firewalls to detect and block XSS attempts. Network administrators should also enforce strict access controls for administrative interfaces, restrict access to trusted IP addresses only, and implement monitoring for suspicious login activities. The vulnerability highlights the importance of input validation and output encoding practices in web application development, emphasizing the need for robust security measures in embedded network devices that are often overlooked in security assessments. Regular security audits of network infrastructure components and prompt application of vendor security patches remain essential practices for maintaining network security posture against such vulnerabilities.