CVE-2021-41383 : Security Advisory and Response
Discover the impact of CVE-2021-41383, a vulnerability in NETGEAR R6020 1.0.0.48 allowing unauthorized shell command execution. Learn about affected systems, exploitation, and mitigation.
A vulnerability in setup.cgi on NETGEAR R6020 1.0.0.48 devices allows unauthorized execution of shell commands.
Understanding CVE-2021-41383
What is CVE-2021-41383?
setup.cgi on NETGEAR R6020 1.0.0.48 devices permits administrative users to run arbitrary shell commands using shell metacharacters in the ntp_server field.
The Impact of CVE-2021-41383
This vulnerability could lead to remote code execution, giving attackers unauthorized access and control over affected devices.
Technical Details of CVE-2021-41383
Vulnerability Description
An issue in setup.cgi on NETGEAR R6020 1.0.0.48 allows execution of shell commands via specific metacharacters in the ntp_server field.
Affected Systems and Versions
- Affected product: NETGEAR R6020 1.0.0.48
- Vulnerable versions: All
Exploitation Mechanism
Attackers exploit the vulnerability by inserting malicious shell metacharacters in the ntp_server field, enabling them to execute unauthorized commands.
Mitigation and Prevention
Immediate Steps to Take
- Disable access to vulnerable services if not required
- Implement strong firewall rules to restrict unauthorized access
Long-Term Security Practices
- Regularly update firmware to patch known vulnerabilities
- Conduct security assessments to identify and address potential weaknesses
Patching and Updates
Apply all security patches and updates provided by NETGEAR to address this vulnerability.