CVE-2021-45554 : Exploit Details and Defense Strategies
Learn about CVE-2021-45554 affecting certain NETGEAR routers. Understand the impact, affected systems, exploitation mechanism, and mitigation steps to prevent unauthorized access.
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects multiple router models including R6400, R6700v3, R7000, R6900P, R7000P, and R8000.
Understanding CVE-2021-45554
This CVE involves command injection vulnerability in NETGEAR routers, potentially allowing an authenticated user to execute arbitrary commands.
What is CVE-2021-45554?
The vulnerability in certain NETGEAR devices allows an authenticated attacker to inject commands, leading to unauthorized access and potential compromise of the routers.
The Impact of CVE-2021-45554
- CVSS Base Score: 8.4 (High)
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Impact: High impact on availability, confidentiality, and integrity
- Privileges Required: High
- Scope: Changed
- User Interaction: None
Technical Details of CVE-2021-45554
This section delves into the specific technical aspects of the vulnerability.
Vulnerability Description
The vulnerability allows an authenticated user to execute commands on affected NETGEAR routers, potentially leading to unauthorized actions and compromise.
Affected Systems and Versions
- R6400 before 1.0.1.74
- R6400v2 before 1.0.4.118
- R6700v3 before 1.0.4.118
- R7000 before 1.0.11.126
- R6900P before 1.3.3.140
- R7000P before 1.3.3.140
- R8000 before 1.0.4.74
Exploitation Mechanism
The vulnerability can be exploited by sending crafted commands to the affected NETGEAR routers, potentially leading to unauthorized actions and complete router compromise.
Mitigation and Prevention
Protecting against CVE-2021-45554 involves immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by NETGEAR.
- Restrict network access to the routers.
- Monitor for any suspicious activities on the network.
Long-Term Security Practices
- Regularly update router firmware.
- Implement strong authentication mechanisms.
- Conduct security training for users to recognize and report suspicious activities.
Patching and Updates
NETGEAR has released firmware updates to address the vulnerability in the affected router models.