CVE-2021-45615 : What You Need to Know

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker in various router models.

Understanding CVE-2021-45615

What is CVE-2021-45615?

Certain NETGEAR devices, including models like CBR40, R8000P, and RBK752, are vulnerable to command injection by unauthorized attackers.

The Impact of CVE-2021-45615

The vulnerability has a CVSS base score of 9.6 (Critical) with high impacts on availability, confidentiality, and integrity. It can be exploited without requiring user interaction.

Technical Details of CVE-2021-45615

Vulnerability Description

The vulnerability allows unauthenticated attackers to inject commands into affected NETGEAR devices, potentially leading to unauthorized access and data compromise.

Affected Systems and Versions

CBR40 before 2.5.0.24
CBR750 before 4.6.3.6
R7900P, R7960P, R8000P before 1.4.2.84
R8300, R8500 before 1.0.2.154
RBK752, RBR750, RBS750, RBK852, RBR850, RBS850 before 3.2.17.12

Exploitation Mechanism

The attack complexity is low, with an adjacent network attack vector. The vulnerability does not require privileges and can result in a change of scope after exploitation.

Mitigation and Prevention

Immediate Steps to Take

Update affected devices to the latest firmware versions provided by NETGEAR.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware to patch known vulnerabilities.
Implement strong access control measures and user authentication.
Conduct regular security audits and penetration testing.

Patching and Updates

Ensure timely installation of security patches and firmware updates from NETGEAR to address the command injection vulnerability in the affected devices.