CVE-2021-20144 : Exploit Details and Defense Strategies
Discover the unauthenticated command injection vulnerability (CVE-2021-20144) in Gryphon Tower routers that allows remote attackers to gain root access and execute unauthorized commands.
This CVE-2021-20144 article provides details about an unauthenticated command injection vulnerability affecting Gryphon Tower routers, allowing remote attackers to execute commands as root on the device.
Understanding CVE-2021-20144
This section aims to explain the impact and technical aspects of CVE-2021-20144.
What is CVE-2021-20144?
CVE-2021-20144 is an unauthenticated command injection vulnerability present in the controller_server service on Gryphon Tower routers. Attackers can exploit this flaw to run commands as root by sending a specially crafted packet.
The Impact of CVE-2021-20144
The vulnerability enables unauthenticated remote attackers on the same network to gain root access on affected Gryphon Tower routers, leading to unauthorized command execution.
Technical Details of CVE-2021-20144
Delve into the technical specifics of CVE-2021-20144, including the vulnerability description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The flaw resides in operation 49's parameters in the controller_server service, allowing attackers to execute commands as root through malicious packets on port 9999.
Affected Systems and Versions
The Gryphon Tower router version <= 04.0004.12 (Current) is susceptible to this command injection vulnerability.
Exploitation Mechanism
Remote, unauthenticated attackers can exploit CVE-2021-20144 by sending specially crafted malicious packets to the controller_server service on port 9999.
Mitigation and Prevention
Learn how to address and prevent the risks associated with CVE-2021-20144 to safeguard your systems.
Immediate Steps to Take
Administrators should apply security patches promptly, restrict network access to exposed services, and monitor for any unusual network activity.
Long-Term Security Practices
Implement network segmentation, strong authentication mechanisms, and regular security audits to enhance overall system security and resilience.
Patching and Updates
Regularly check for vendor patches and updates, apply security fixes, and follow best practices to mitigate the risks posed by CVE-2021-20144.