CVE-2021-45594 : Exploit Details and Defense Strategies
Learn about CVE-2021-45594 impacting certain NETGEAR routers, allowing command injection by authenticated users. Find out affected models and steps for mitigation.
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects various router models before version 2.7.3.22.
Understanding CVE-2021-45594
What is CVE-2021-45594?
CVE-2021-45594 is a vulnerability impacting certain NETGEAR devices that allows an authenticated user to perform command injections. This vulnerability affects several router models before version 2.7.3.22.
The Impact of CVE-2021-45594
The vulnerability has a high severity level with a CVSS base score of 8.4. The impact includes high confidentiality, integrity, and availability impacts, requiring high privileges and resulting in a scope change.
Technical Details of CVE-2021-45594
Vulnerability Description
The vulnerability enables authenticated users to execute arbitrary commands on affected NETGEAR devices.
Affected Systems and Versions
- RBS50Y before 2.7.3.22
- RBR20 before 2.7.3.22
- RBR40 before 2.7.3.22
- RBR50 before 2.7.3.22
- RBS20 before 2.7.3.22
- RBS40 before 2.7.3.22
- RBS50 before 2.7.3.22
- RBK20 before 2.7.3.22
- RBK40 before 2.7.3.22
- RBK50 before 2.7.3.22
Exploitation Mechanism
The attack complexity is low, and the attack vector is adjacent network. The vulnerability requires no user interaction and can lead to the complete compromise of confidentiality, integrity, and availability.
Mitigation and Prevention
Immediate Steps to Take
- Update the affected devices to version 2.7.3.22 or later.
- Restrict network access to the devices.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from NETGEAR.
- Implement strong authentication mechanisms for device access.
Patching and Updates
Ensure timely installation of security patches and firmware updates provided by NETGEAR.