CVE-2023-51733 in Skyworth Router CM5100
Summary
by MITRE • 01/17/2024
This vulnerability exist in Skyworth Router CM5100, version 4.1.1.24, due to insufficient validation of user supplied input for the Identity parameter under Local endpoint settings at its web interface. A remote attacker could exploit this vulnerability by supplying specially crafted input to the parameter at the web interface of the vulnerable targeted system.
Successful exploitation of this vulnerability could allow the attacker to perform stored XSS attacks on the targeted system.
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Analysis
by VulDB Data Team • 02/10/2024
The vulnerability identified as CVE-2023-51733 affects the Skyworth Router CM5100 model running firmware version 4.1.1.24, representing a critical security flaw within the device's web-based management interface. This issue stems from inadequate input validation mechanisms that specifically target the Identity parameter within the Local endpoint settings configuration section. The router's web interface fails to properly sanitize or validate user-supplied data before processing, creating an exploitable condition that allows malicious actors to manipulate the system through web-based attacks.
The technical flaw manifests as a classic stored cross-site scripting vulnerability where an attacker can inject malicious code through the improperly validated Identity parameter. When the vulnerable router processes this parameter, it fails to implement proper input sanitization or output encoding measures that would normally prevent malicious scripts from being executed within the context of the web interface. This weakness enables attackers to store malicious payloads that persist within the router's configuration or interface, making the vulnerability particularly dangerous as it can affect multiple users who access the compromised system. The vulnerability operates at the application layer and specifically targets the web interface components, making it accessible through standard HTTP requests.
The operational impact of this vulnerability extends beyond simple data theft or system compromise, as it creates a persistent threat vector that can be exploited by remote attackers without requiring physical access to the device. Successful exploitation allows attackers to execute malicious JavaScript code within the context of the router's web interface, potentially enabling them to steal session cookies, perform unauthorized configuration changes, or redirect users to malicious sites. This stored XSS vulnerability can be particularly damaging in network environments where the router serves as a central management point, as it could provide attackers with elevated privileges and persistent access to network resources. The vulnerability affects all users who interact with the router's web interface, making it a significant concern for both individual and enterprise network security.
Mitigation strategies for CVE-2023-51733 should prioritize immediate firmware updates from Skyworth to address the input validation deficiencies in the router's web interface. Network administrators should also implement network segmentation to limit access to the router's management interface and deploy web application firewalls to monitor and filter potentially malicious requests targeting the vulnerable parameter. Additional protective measures include restricting administrative access to the router through IP whitelisting, implementing strong authentication mechanisms, and conducting regular security audits of network devices to identify similar vulnerabilities. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws, and represents a typical attack pattern categorized under the ATT&CK framework's T1190 technique for exploiting vulnerabilities in web applications. Organizations should also consider implementing monitoring solutions to detect anomalous requests that might indicate exploitation attempts targeting this specific parameter.