CVE-2021-45539 : Exploit Details and Defense Strategies
Learn about CVE-2021-45539 affecting multiple NETGEAR devices. Understand the impact, affected systems, exploitation mechanism, and mitigation steps to secure your network.
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects multiple models such as R7900P, R7960P, R8000, R8000P, MR60, RAX20, RAX45, RAX80, MS60, RAX15, RAX50, and RAX75.
Understanding CVE-2021-45539
This CVE relates to a command injection vulnerability in various NETGEAR routers and WiFi systems.
What is CVE-2021-45539?
The CVE-2021-45539 vulnerability involves a command injection issue that allows an authenticated user to execute arbitrary commands on affected NETGEAR devices.
The Impact of CVE-2021-45539
The vulnerability has a high severity level with significant impacts on confidentiality, integrity, and availability.
Technical Details of CVE-2021-45539
This section provides in-depth technical information about the CVE.
Vulnerability Description
The vulnerability allows a user to inject and execute commands on NETGEAR devices, compromising their security.
Affected Systems and Versions
- R7900P before 1.4.2.84
- R7960P before 1.4.2.84
- R8000 before 1.0.4.74
- R8000P before 1.4.2.84
- MR60 before 1.0.6.110
- RAX20 before 1.0.2.82
- RAX45 before 1.0.2.28
- RAX80 before 1.0.3.106
- MS60 before 1.0.6.110
- RAX15 before 1.0.2.82
- RAX50 before 1.0.2.28
- RAX75 before 1.0.3.106
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: High
- User Interaction: None
- Scope: Changed
- CVSS Score: 8.4 (High)
Mitigation and Prevention
Protecting systems from CVE-2021-45539 requires immediate action and ongoing security measures.
Immediate Steps to Take
- Update affected devices to the latest firmware versions.
- Restrict network access and user permissions.
- Monitor network traffic for suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and audits.
- Educate users on secure practices and potential threats.
- Implement network segmentation to contain potential breaches.
Patching and Updates
Regularly check for and apply firmware updates provided by NETGEAR to address CVE-2021-45539.