CVE-2017-18839 : Exploit Details and Defense Strategies

A number of NETGEAR devices are susceptible to stored XSS vulnerabilities.

Understanding CVE-2017-18839

Certain NETGEAR devices, including M4300 and M4200 series, are affected by stored XSS vulnerabilities.

What is CVE-2017-18839?

Stored Cross-Site Scripting (XSS) vulnerabilities impact specific NETGEAR devices, potentially allowing attackers to execute malicious scripts in users' browsers.

The Impact of CVE-2017-18839

CVSS Base Score: 5.2 (Medium Severity)
Attack Vector: Local
Privileges Required: High
User Interaction: Required
Scope: Changed
Availability, Confidentiality, and Integrity Impact: Low

Technical Details of CVE-2017-18839

Stored XSS vulnerability affecting NETGEAR M4300 and M4200 series.

Vulnerability Description

The vulnerability allows attackers to store and execute malicious scripts on affected devices, potentially leading to unauthorized access or data theft.

Affected Systems and Versions

M4300-28G, M4300-52G, M4300-28G-POE+, M4300-52G-POE+, M4300-8X8F, M4300-12X12F, M4300-24X24F, M4300-24X, M4300-48X, and M4200 before version 12.0.2.15.

Exploitation Mechanism

Attackers with high privileges can exploit this vulnerability locally, requiring user interaction to execute malicious scripts.

Mitigation and Prevention

Steps to secure affected devices and prevent exploitation.

Immediate Steps to Take

Update affected devices to version 12.0.2.15 or later.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor for security advisories and updates from NETGEAR.
Educate users on safe browsing practices and potential risks of XSS attacks.

Patching and Updates

Apply patches and firmware updates provided by NETGEAR to address the stored XSS vulnerability.