CVE-2021-45494 : Exploit Details and Defense Strategies

A vulnerability in certain NETGEAR devices allows an attacker to read arbitrary files, affecting specific models before version 4.4.0.10.

Understanding CVE-2021-45494

Certain NETGEAR devices are vulnerable to file read attacks, potentially compromising confidentiality, integrity, and availability.

What is CVE-2021-45494?

This CVE refers to the ability of an attacker to read arbitrary files on NETGEAR devices, impacting specific models prior to version 4.4.0.10.

The Impact of CVE-2021-45494

The vulnerability poses a high risk, with a CVSS base score of 8.4, affecting confidentiality, integrity, and availability of the compromised devices.

Technical Details of CVE-2021-45494

This section provides specific technical details of the CVE.

Vulnerability Description

The vulnerability allows attackers to read arbitrary files on NETGEAR devices, including RBK352, RBR350, and RBS350 before 4.4.0.10.

Affected Systems and Versions

RBK352 before 4.4.0.10
RBR350 before 4.4.0.10
RBS350 before 4.4.0.10

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Adjacent Network
Privileges Required: High
Scope: Changed
User Interaction: None
Vector String: CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N

Mitigation and Prevention

Protecting systems from CVE-2021-45494 is crucial to prevent unauthorized file access.

Immediate Steps to Take

Update affected NETGEAR devices to version 4.4.0.10 or later.
Implement network segmentation to limit access.
Monitor file access and network traffic for suspicious activities.

Long-Term Security Practices

Regularly update device firmware to patch known vulnerabilities.
Conduct security audits and penetration testing regularly.
Educate users on safe browsing habits and phishing prevention.

Patching and Updates

Ensure timely application of security patches and firmware updates to mitigate the risk of file read attacks.