CVE-2021-45629 : Exploit Details and Defense Strategies

Certain NETGEAR devices are affected by a critical command injection vulnerability, allowing unauthenticated attackers to exploit them. This CVE impacts several NETGEAR models before specific firmware versions.

Understanding CVE-2021-45629

What is CVE-2021-45629?

Certain NETGEAR devices are susceptible to command injection by an unauthenticated attacker. This vulnerability affects various models before specific firmware versions.

The Impact of CVE-2021-45629

The vulnerability has a critical severity rating with a CVSS base score of 9.6. The impact includes high confidentiality, integrity, and availability impact.

Technical Details of CVE-2021-45629

Vulnerability Description

CVE-2021-45629 allows unauthenticated attackers to perform command injection on affected devices.

Affected Systems and Versions

Devices affected include CBR750, RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850 before specific firmware versions.

Exploitation Mechanism

Attackers can exploit this vulnerability through an adjacent network with low complexity.

Mitigation and Prevention

Immediate Steps to Take

Update the firmware of affected NETGEAR devices to the latest secure versions.
Restrict network access to vulnerable devices.
Monitor network traffic for any unusual activity.

Long-Term Security Practices

Regularly update and patch all network-connected devices.
Implement strong network segmentation to limit the impact of security breaches.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

NETGEAR has released firmware updates addressing CVE-2021-45629. Ensure all affected devices are updated to the latest secure firmware.