CVE-2021-20141 Explained : Impact and Mitigation
Discover how CVE-2021-20141 affects Gryphon Tower routers. Learn about the unauthenticated command injection flaw, its impact, affected versions, and mitigation steps.
A command injection vulnerability, tracked as CVE-2021-20141, has been identified in Gryphon Tower routers. This vulnerability allows an unauthenticated remote attacker to execute arbitrary commands as root on the affected device. The attacker can achieve this by sending a specially crafted malicious packet to the controller_server service on port 9999.
Understanding CVE-2021-20141
This section will delve into the specifics of the CVE-2021-20141 vulnerability.
What is CVE-2021-20141?
The CVE-2021-20141 vulnerability pertains to an unauthenticated command injection flaw present in the operation 32 parameters of the controller_server service on Gryphon Tower routers. This flaw enables attackers on the same network to gain root access by sending a malicious packet to the service on port 9999.
The Impact of CVE-2021-20141
The impact of this vulnerability is severe as it allows remote attackers to execute commands with elevated privileges, potentially leading to a complete compromise of the affected device.
Technical Details of CVE-2021-20141
This section will provide technical insights into CVE-2021-20141.
Vulnerability Description
The vulnerability arises due to inadequate input validation in the parameters of operation 32, leading to command injection capabilities for attackers.
Affected Systems and Versions
The Gryphon Tower routers with versions less than or equal to 04.0004.12 (Current) are affected by this vulnerability.
Exploitation Mechanism
Exploiting CVE-2021-20141 involves sending a specially crafted malicious packet to the controller_server service on port 9999, allowing unauthorized remote command execution.
Mitigation and Prevention
In this section, we discuss the mitigation strategies for CVE-2021-20141.
Immediate Steps to Take
Users of Gryphon Tower routers should immediately apply security patches provided by the vendor to mitigate the risk associated with this vulnerability.
Long-Term Security Practices
To enhance overall cybersecurity posture, organizations are advised to implement network segmentation, access controls, and regular security assessments.
Patching and Updates
Regularly update the firmware of Gryphon Tower routers to ensure that the latest security patches are applied and vulnerabilities are addressed.