15,000+ Four-Faith Routers Exposed to Critical Exploit Due to Default Credentials
A new cybersecurity threat has emerged, targeting Four-Faith routers through a critical vulnerability tracked as CVE-2024-12856. With over 15,000 devices potentially exposed, the Four Faith router exploit allows attackers to execute OS commands remotely. The flaw’s impact is magnified by the widespread use of default credentials, leaving users vulnerable to persistent remote access attacks. Here’s everything you need to know about this alarming development, its implications, and how to protect your systems.
Understanding CVE-2024-12856
What Is CVE-2024-12856?
CVE-2024-12856 is a high-severity operating system (OS) command injection vulnerability affecting Four-Faith router models F3x24 and F3x36. It has a CVSS score of 7.2, reflecting its significant risk to affected systems.
How Does the Exploit Work?
The Four Faith router exploit relies on remote attackers authenticating themselves via the router’s default credentials. Once access is gained, attackers can manipulate the system’s time settings through the /apply.cgi endpoint, exploiting the adj_time_year parameter. This enables unauthorized OS command execution, including launching a reverse shell for persistent remote control.
Scope of the Threat
Affected Devices
According to data from Censys, over 15,000 internet-facing Four-Faith routers are potentially vulnerable. These devices are widely used in industrial and enterprise environments, making their compromise particularly concerning.
Ongoing Exploitation
The first signs of exploitation were observed in early November 2024, with a recent attack originating from the IP address 178.215.238[.]91. This IP has been previously linked to the exploitation of another vulnerability, CVE-2019-12168, affecting the same router models. This highlights the persistent nature of the Four Faith router exploit in targeting these devices.
Lack of Patches
As of now, Four-Faith has not released a patch to address CVE-2024-12856. VulnCheck reported the vulnerability on December 20, 2024, and the issue remains unresolved, increasing the urgency for users to adopt interim security measures against the Four Faith router exploit.
Mitigating the Risk
Change Default Credentials
One of the simplest yet most effective measures is to immediately change the default credentials on all Four-Faith routers. Default credentials are a common attack vector and significantly reduce security, particularly in cases of the Four Faith router exploit.
Restrict Network Access
Ensure that devices are not exposed to the internet unnecessarily. Restrict access to trusted IPs using firewalls or VPNs to minimize the risk of unauthorized access and mitigate the Four Faith router exploit.
Monitor Network Activity
Organizations should monitor their network for suspicious activities, such as repeated login attempts or unexplained configuration changes, which may indicate exploitation attempts related to the Four Faith router exploit.
Stay Informed
Stay updated on security advisories from Four-Faith and authoritative sources such as CVE databases and threat intelligence platforms like GreyNoise. Promptly apply patches or mitigation strategies as they become available to combat the Four Faith router exploit.
Broader Implications
Industrial Cybersecurity Concerns
The widespread use of Four-Faith routers in industrial settings amplifies the potential fallout. Compromised devices could disrupt critical infrastructure operations, leading to severe economic and safety consequences. The Four Faith router exploit serves as a stark reminder of the vulnerabilities within IoT and industrial networks.
Lessons for the Industry
This incident underscores the importance of secure default configurations and regular patch management. Manufacturers must prioritize transparency and swift response to vulnerabilities to maintain user trust and mitigate risks posed by issues like the Four Faith router exploit.
The exposure of over 15,000 Four-Faith routers to a critical exploit is a wake-up call for organizations to reassess their cybersecurity practices. Change default credentials, limit device exposure, and stay informed to protect your systems from exploitation through the Four Faith router exploit. Share this article to spread awareness and help others secure their networks.
Summary
- What happened? Four-Faith routers are exposed to CVE-2024-12856, a high-severity OS command injection vulnerability.
- Why is it serious? Over 15,000 devices are vulnerable, and exploitation allows attackers to gain persistent remote access.
- What can you do? Change default credentials, restrict network access, and monitor for suspicious activities.
For more insights on securing your networks, check out our related article on best practices for IoT device security.
