CVE-2021-45558 : Security Advisory and Response
Learn about CVE-2021-45558, a command injection vulnerability impacting certain NETGEAR routers. Understand the severity, affected devices, and mitigation steps to protect your network.
Certain NETGEAR devices are affected by command injection by an authenticated user.
Understanding CVE-2021-45558
What is CVE-2021-45558?
- CVE-2021-45558 involves command injection on certain NETGEAR devices by an authenticated user.
- Devices affected include RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850 before version 3.2.16.6.
The Impact of CVE-2021-45558
- CVSS Base Score: 8.4 (High Severity)
- Attack Vector: Via Adjacent Network
- Confidentiality, Integrity, and Availability Impact: High
- Privileges Required: High
- Scope: Changed
- User Interaction: None
Technical Details of CVE-2021-45558
Vulnerability Description
- The vulnerability allows an authenticated user to inject commands into affected NETGEAR devices.
Affected Systems and Versions
- RBK752, RBR750, RBS750, RBK852, RBR850, RBS850 before 3.2.16.6
Exploitation Mechanism
- Authenticated users can exploit this vulnerability to execute malicious commands on the affected devices.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to version 3.2.16.6 or later.
- Monitor network traffic for any unauthorized access.
Long-Term Security Practices
- Implement strong authentication mechanisms.
- Regularly update device firmware and security patches.
- Conduct periodic security audits.
- Educate users about the importance of cybersecurity.
- Restrict network access based on the principle of least privilege.
Patching and Updates
- NETGEAR has released version 3.2.16.6 to address the vulnerability. Ensure all devices are updated to this version.