CVE-2024-38897 is an information disclosure vulnerability identified in the WAVLINK WN551K1 router model. The issue resides in the 'live_check.shtml' web interface endpoint, which improperly exposes sensitive router information to unauthenticated remote attackers. According to the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), the vulnerability can be exploited remotely without any privileges or user interaction, making it relatively easy to exploit. The vulnerability is categorized under CWE-202, which typically involves exposure of sensitive information through improper handling or validation of web requests. Although the exact nature of the sensitive information is not detailed, such disclosures often include configuration details, firmware versions, or network information that could facilitate further attacks such as targeted exploits or social engineering. No patches or updates have been released at the time of publication, and there are no known active exploits in the wild. The vulnerability does not allow attackers to alter router settings or disrupt service, limiting its impact to confidentiality breaches. However, the information gained could be leveraged in multi-stage attacks against affected networks. The lack of authentication requirement and ease of remote exploitation increase the risk profile, especially in environments where these routers are exposed to untrusted networks or the internet.

The primary impact of CVE-2024-38897 is the unauthorized disclosure of sensitive router information, which compromises confidentiality. This exposure can enable attackers to gather intelligence about the network infrastructure, firmware versions, or configuration details, which may be used to craft more effective targeted attacks or exploit other vulnerabilities. Although the vulnerability does not directly affect the integrity or availability of the router or network, the information leakage can facilitate lateral movement or privilege escalation in a broader attack campaign. Organizations relying on WAVLINK WN551K1 routers, especially those with devices accessible from untrusted networks, face increased risk of reconnaissance by malicious actors. This can be particularly concerning for small to medium enterprises or home users who may lack robust network segmentation or monitoring. The absence of known exploits in the wild reduces immediate risk but does not eliminate the potential for future exploitation. The medium severity rating reflects the limited scope of impact but acknowledges the ease of exploitation and potential for information gathering.

1. Network Segmentation: Isolate the WAVLINK WN551K1 routers from untrusted networks and restrict access to the router’s management interface to trusted internal networks only. 2. Access Controls: Implement firewall rules to block external access to the router’s web interface, especially the 'live_check.shtml' endpoint, from the internet or untrusted sources. 3. Monitoring and Logging: Enable detailed logging on network devices and monitor for unusual access patterns or repeated requests to the 'live_check.shtml' page. 4. Firmware Updates: Regularly check WAVLINK’s official channels for firmware updates or security advisories addressing this vulnerability and apply patches promptly once available. 5. Temporary Workarounds: If possible, disable or restrict access to the 'live_check.shtml' page via router configuration or custom firewall rules until an official patch is released. 6. Vendor Engagement: Contact WAVLINK support to inquire about planned fixes or mitigations and request guidance on securing affected devices. 7. User Awareness: Educate users and administrators about the risks of exposing router management interfaces and the importance of strong network perimeter defenses. These steps go beyond generic advice by focusing on network-level controls and proactive monitoring to reduce exposure until a patch is available.