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Detailed Analysis Report on CVE-2024-40087
Date: October 25, 2024
Executive Summary
CVE-2024-40087 is a critical vulnerability identified in the Vilo 5 Mesh WiFi System, specifically affecting firmware versions up to 5.16.1.33. This vulnerability is due to insecure permissions and a lack of authentication in a custom TCP service running on port 5432. The service, intended for setup purposes via the Vilo app, can be exploited by unauthenticated attackers on the local area network (LAN) to gain administrative access to the router. The vulnerability is classified under CWE-306: Missing Authentication for Critical Function, with a CVSS 3.1 score of 9.7, indicating its critical nature. Immediate action is recommended to mitigate potential risks.
Technical Information
The Vilo 5 Mesh WiFi System is compromised by a vulnerability that stems from a custom TCP service on port 5432, which lacks proper authentication mechanisms. This service is primarily used for initial setup and configuration through the Vilo app. The protocol used by this service is easily reverse-engineered, and it employs XXTEA encryption, which, while providing some level of data obfuscation, does not prevent unauthorized access due to the absence of authentication.
An attacker with access to the router's LAN can exploit this vulnerability to perform various administrative actions. These include changing the SSID and WiFi password, accessing sensitive settings such as PPPoE credentials, and rebooting the router. The attack vector is classified as adjacent, with low complexity, requiring no privileges or user interaction. The impact on confidentiality, integrity, and availability is high, as the attacker can fully control the router's settings and operations.
The vulnerability's critical nature is underscored by its CVSS 3.1 score of 9.7. The lack of authentication for a critical function (CWE-306) makes it a significant threat to any network utilizing the affected Vilo 5 Mesh WiFi System. The potential for unauthorized access and control over network settings poses a severe risk to network security and data integrity.
Exploitation in the Wild
Currently, there are no confirmed reports of CVE-2024-40087 being exploited in the wild. However, the ease of exploitation due to the lack of authentication makes it a significant risk for networks using the affected Vilo 5 Mesh WiFi System. The potential for exploitation remains high, particularly in environments where the network is accessible to untrusted users.
APT Groups using this vulnerability
As of now, there is no specific information regarding Advanced Persistent Threat (APT) groups actively exploiting CVE-2024-40087. However, given the vulnerability's critical nature and ease of exploitation, it is plausible that APT groups could target sectors utilizing the Vilo 5 Mesh WiFi System, particularly in regions where these devices are prevalent.
Affected Product Versions
The vulnerability affects the Vilo 5 Mesh WiFi System with firmware versions up to 5.16.1.33. Users of these versions are at risk and should take immediate action to secure their networks.
Workaround and Mitigation
To mitigate the risk posed by CVE-2024-40087, users of the affected Vilo 5 Mesh WiFi System should update their firmware to a version that addresses this vulnerability. If an update is not available, users should consider isolating the device from untrusted networks and monitoring network traffic for unusual activity. Additionally, implementing network segmentation and access controls can help limit the potential impact of an exploit.
References
- National Vulnerability Database (NVD) Entry: https://nvd.nist.gov/vuln/detail/CVE-2024-40087
- GitHub Advisory: https://github.com/advisories/GHSA-69gg-c325-75fx
- Vilo Official Website: http://vilo.com
Rescana is here for you
At Rescana, we are committed to helping our customers navigate the complexities of cybersecurity threats. Our Continuous Threat and Exposure Management (CTEM) platform is designed to provide comprehensive insights and proactive measures to safeguard your network. Should you have any questions about this report or require further assistance, please do not hesitate to contact us at ops@rescana.com. We are here to support you in maintaining a secure and resilient network environment.
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