CVE-2021-27274 : Exploit Details and Defense Strategies

A critical vulnerability in NETGEAR's ProSAFE Network Management System version 1.6.0.26 allows remote attackers to execute arbitrary code without authentication.

Understanding CVE-2021-27274

This CVE exposes a flaw within the MFileUploadController class of the affected NETGEAR software, leading to code execution by attackers.

What is CVE-2021-27274?

The vulnerability in ProSAFE Network Management System 1.6.0.26 enables remote threat actors to run malicious code on the system without the need for authentication, posing a significant risk to system integrity.

The Impact of CVE-2021-27274

With a CVSS base score of 9.8 out of 10, this critical vulnerability has a high impact on confidentiality, integrity, and availability. Attackers can exploit it over the network with low complexity and without user interaction.

Technical Details of CVE-2021-27274

This section dives into the specifics of the vulnerability in terms of description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The flaw arises from inadequate validation of user-supplied paths before performing file operations, allowing attackers to execute code within the system context.

Affected Systems and Versions

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

Exploitation Mechanism

Remote threat actors can exploit this vulnerability through network access, without needing any privileges from the user.

Mitigation and Prevention

To safeguard systems from CVE-2021-27274, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Organizations are advised to apply patches, disable affected services, monitor network traffic for signs of exploitation, and enforce the principle of least privilege.

Long-Term Security Practices

Implementing network segmentation, keeping systems up-to-date, conducting regular security assessments, and employing intrusion detection systems can enhance long-term security posture.

Patching and Updates

NETGEAR may release patches or updates to address this vulnerability. It is crucial for users to promptly apply these fixes to mitigate the risk of exploitation.