CVE-2018-17443 in Central WiFi Manager
Summary
by MITRE
An issue was discovered on D-Link Central WiFi Manager before v 1.03r0100-Beta1. The 'sitename' parameter of the UpdateSite endpoint is vulnerable to stored XSS.
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Analysis
by VulDB Data Team • 04/11/2025
The vulnerability identified as CVE-2018-17443 affects D-Link Central WiFi Manager versions prior to 1.03r0100-Beta1, representing a critical security flaw in the web-based management interface of D-Link wireless networking equipment. This issue manifests through the UpdateSite endpoint where the 'sitename' parameter fails to properly sanitize user input, creating an avenue for malicious actors to inject persistent cross-site scripting payloads. The vulnerability exists within the web application layer of the central wifi manager system, which serves as the primary interface for configuring and managing multiple D-Link access points and wireless networks across enterprise environments.
The technical flaw stems from insufficient input validation and output encoding mechanisms within the UpdateSite endpoint implementation. When administrators or users submit site names through the web interface, the application stores this data without adequate sanitization of potentially malicious content. This stored data is then subsequently rendered back to users without proper HTML escaping or context-appropriate encoding, allowing attackers to inject javascript code that executes in the browsers of other authenticated users who view the affected site information. The vulnerability classifies under CWE-79 as a cross-site scripting issue, specifically representing a stored XSS variant where the malicious payload persists in the application's database or storage system rather than being reflected in a single request. This persistent nature makes the vulnerability particularly dangerous as it can affect multiple users over extended periods without requiring repeated exploitation attempts.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it enables attackers to perform a wide range of malicious activities within the context of the authenticated user's session. An attacker could potentially escalate privileges, access sensitive network configuration data, modify wireless settings, or even redirect users to malicious sites for credential harvesting. Given that the D-Link Central WiFi Manager is typically deployed in enterprise environments where it manages critical network infrastructure, successful exploitation could lead to complete network compromise and unauthorized access to corporate wireless resources. The vulnerability affects all users who have access to the web management interface, making it particularly dangerous in multi-user environments where administrative privileges are shared. This issue aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links, as attackers could craft malicious site names containing XSS payloads that would execute when other administrators view the compromised site information.
Mitigation strategies for this vulnerability should include immediate deployment of the vendor-provided security patch or firmware update that addresses the input validation flaw in the UpdateSite endpoint. Organizations should also implement network segmentation to limit access to the Central WiFi Manager interface to only authorized personnel, while establishing strict input validation policies for all user-supplied data within the application. Additional protective measures include implementing web application firewalls to detect and block suspicious input patterns, conducting regular security assessments of the management interface, and monitoring for unauthorized modifications to site configurations. Security teams should also consider implementing role-based access controls to minimize the potential impact of compromised accounts and establish incident response procedures specifically addressing cross-site scripting vulnerabilities in network management systems. The vulnerability underscores the importance of proper input sanitization and output encoding practices as recommended by the OWASP Top Ten and other security frameworks, particularly in applications handling sensitive network configuration data.