CVE-2021-27273 : Security Advisory and Response

A critical vulnerability in NETGEAR ProSAFE Network Management System 1.6.0.26 allows remote attackers to execute arbitrary code by bypassing the authentication mechanism. The flaw exists within the SettingConfigController class.

Understanding CVE-2021-27273

This CVE identifies a severe OS command injection vulnerability in NETGEAR's Network Management System.

What is CVE-2021-27273?

CVE-2021-27273 allows attackers to run malicious commands on affected systems, compromising confidentiality, integrity, and availability.

The Impact of CVE-2021-27273

With a CVSS base score of 8.8 (High), this vulnerability poses a significant risk to systems running the affected version of the ProSAFE Network Management System.

Technical Details of CVE-2021-27273

The vulnerability stems from improper neutralization of special elements in an OS command, enabling attackers to execute code within the SYSTEM context.

Vulnerability Description

The flaw lies in the SettingConfigController class, where user-supplied input is not properly validated before executing system calls.

Affected Systems and Versions

NETGEAR's ProSAFE Network Management System version 1.6.0.26 is impacted by this vulnerability.

Exploitation Mechanism

By manipulating the fileName parameter, attackers can exploit the vulnerability after bypassing the authentication mechanism.

Mitigation and Prevention

To safeguard your system from CVE-2021-27273, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Ensure all system administrators are aware of the vulnerability and restrict network access to prevent unauthorized exploitation.

Long-Term Security Practices

Regularly update and patch the ProSAFE Network Management System to mitigate potential risks associated with this vulnerability.

Patching and Updates

Stay informed about security advisories from NETGEAR and apply patches promptly to address known vulnerabilities.