CVE-2021-45544 : Exploit Details and Defense Strategies
Learn about CVE-2021-45544 affecting certain NETGEAR devices, allowing authenticated users to execute commands. High severity with immediate patches and long-term security measures.
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects multiple router models.
Understanding CVE-2021-45544
What is CVE-2021-45544?
CVE-2021-45544 is a vulnerability found in certain NETGEAR devices that allows an authenticated user to perform command injection.
The Impact of CVE-2021-45544
This vulnerability has a CVSS base score of 8.4 (High severity) with impacts on confidentiality, integrity, and availability. It requires high privileges for exploitation without user interaction.
Technical Details of CVE-2021-45544
Vulnerability Description
The vulnerability allows authenticated users to execute arbitrary commands on affected NETGEAR devices.
Affected Systems and Versions
- R7850 before 1.0.5.74
- R7900P before 1.4.2.84
- R7960P before 1.4.2.84
- R8000 before 1.0.4.74
- R8000P before 1.4.2.84
- RAX200 before 1.0.4.120
- RAX75 before 1.0.4.120
- RAX80 before 1.0.4.120
- RBK852 before 3.2.17.12
- RBR850 before 3.2.17.12
- RBS850 before 3.2.17.12
Exploitation Mechanism
The attack complexity is low, the attack vector is adjacent, and the scope is changed. Exploitation can lead to high impacts on confidentiality, integrity, and availability.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest firmware updates from NETGEAR.
- Restrict network access to the devices.
- Regularly monitor for suspicious activities.
Long-Term Security Practices
- Implement strong and unique passwords for device access.
- Enable firewall and intrusion detection systems.
Patching and Updates
Regularly check for and apply security patches and firmware updates provided by NETGEAR.