The Cybersecurity and Infrastructure Security Agency (CISA) has released a security advisory highlighting several critical vulnerabilities discovered in Vonets WiFi Bridge devices. These vulnerabilities present significant risks, including the potential for attackers to execute arbitrary code, access sensitive data, or disrupt device operations.
This poses a serious threat to the security of industrial and commercial networks that depend on these devices. Despite the gravity of these issues, Vonets has not responded to CISA’s outreach for collaboration on mitigation efforts, leaving users at risk.
Key Vulnerabilities and Their Impacts:
The vulnerabilities identified in the Vonets devices vary in severity and include:
- CVE-2024-41161 (CVSSv4 8.7): This flaw involves the use of hard-coded credentials, allowing unauthorized users to bypass authentication and gain full device access using pre-set administrator credentials that cannot be disabled. This makes it a particularly dangerous vulnerability.
- CVE-2024-29082 (CVSSv4 8.8): An issue with improper access control permits attackers to bypass authentication and perform a factory reset on the device through unprotected endpoints, leading to potential service disruptions and loss of configuration data.
- CVE-2024-41936 (CVSSv4 8.7): A directory traversal vulnerability that enables attackers to read arbitrary files on the device, bypassing authentication and exposing sensitive information.
- CVE-2024-37023 (CVSSv4 9.4): OS command injection vulnerabilities allow authenticated attackers to execute arbitrary operating system commands on the device, potentially giving them control over its operation.
- CVE-2024-39815 (CVSSv4 8.7): A flaw in the handling of exceptional conditions could lead to a denial-of-service (DoS) scenario when attackers send specially crafted HTTP requests to the device.
- CVE-2024-39791 (CVSSv4 10): The most severe vulnerability, a stack-based buffer overflow, allows remote attackers to execute arbitrary code, potentially gaining full control of the device without needing authentication.
- CVE-2024-42001 (CVSSv4 6.1): An issue with improper authentication enables attackers to bypass authentication by sending specially crafted requests during an active user session.
CISA’s Recommendations
In light of Vonets' lack of response, CISA has issued several recommendations to help organizations mitigate the risks associated with these vulnerabilities:
- Minimize Network Exposure: Ensure that control system devices and networks are not directly accessible from the internet to reduce the risk of unauthorized access.
- Isolate Control Systems: Position control system networks and remote devices behind firewalls and separate them from business networks to prevent cross-network attacks.
- Secure Remote Access: When remote access is necessary, use secure methods like Virtual Private Networks (VPNs). However, it's crucial to keep VPNs updated and ensure the security of connected devices.
CISA stresses the importance of conducting thorough impact analysis and risk assessments before implementing any defensive measures to avoid unintended operational disruptions.
While no public exploitation of these vulnerabilities has been reported yet, the critical nature of these issues demands immediate attention. Organizations and individuals must act swiftly to safeguard their networks and reduce the risk of potential attacks
