CVE-2018-10110 in DIR-615
Summary
by MITRE
D-Link DIR-615 T1 devices allow XSS via the Add User feature.
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Analysis
by VulDB Data Team • 08/07/2024
The CVE-2018-10110 vulnerability affects D-Link DIR-615 T1 wireless routers and represents a cross-site scripting flaw within the device's web-based administrative interface. This vulnerability specifically manifests through the Add User feature, which is commonly used by administrators to manage user accounts and access permissions for network resources. The affected device model DIR-615 T1 was released with firmware versions that failed to properly sanitize user input, creating an exploitable condition that could be leveraged by remote attackers to execute malicious scripts in the context of authenticated users.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding within the web application layer of the router's firmware. When administrators navigate to the Add User section and submit user account information through the web interface, the device fails to adequately filter or escape special characters in the input fields. This allows malicious actors to inject script code that gets executed when other users view the user management page. The vulnerability exists at the application layer and requires authentication to exploit, as the attacker must first establish a valid session with the router's administrative interface.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a potential foothold for more sophisticated attacks within the network infrastructure. An attacker who successfully exploits this vulnerability could potentially escalate privileges, modify user accounts, or redirect authenticated users to malicious websites. The attack surface is particularly concerning for network administrators who frequently access the router's web interface, as the malicious scripts could persist in the browser cache and execute automatically upon page reload. This vulnerability also aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and can be mapped to ATT&CK technique T1059.007 for scripting execution and T1566 for credential access through social engineering.
Mitigation strategies for CVE-2018-10110 should prioritize firmware updates from D-Link, as the vendor has released patches addressing this specific vulnerability. Network administrators should also implement network segmentation to limit access to administrative interfaces and establish multi-factor authentication where possible. Browser-based protections such as content security policies and XSS filters can provide additional defense-in-depth measures, though these are not foolproof against persistent attacks. Regular security audits of network infrastructure should include checks for outdated firmware versions and proper input validation implementation. The vulnerability highlights the importance of secure coding practices and proper input sanitization in embedded web applications, particularly those managing network access controls and user authentication mechanisms.