CVE-2021-26622 : Vulnerability Insights and Analysis

Genian NAC remote code execution vulnerability allows remote attackers to execute arbitrary code with SYSTEM privileges on all connected nodes in NAC. The vulnerability stemmed from Server-Side Template Injection (SSTI) issue and inadequate file name parameter validation.

Understanding CVE-2021-26622

This section delves into the details of the Genian NAC remote code execution vulnerability.

What is CVE-2021-26622?

An SSTI vulnerability in Genian NAC permits remote execution of malicious code with elevated privileges, impacting Windows platforms.

The Impact of CVE-2021-26622

With a CVSS base score of 9.6 (Critical), this vulnerability poses severe threats to confidentiality, integrity, and availability. Attackers can exploit it on Genian NAC Suite V4.0 and V5.0, potentially compromising the entire network.

Technical Details of CVE-2021-26622

Explore the technical aspects of the Genian NAC remote code execution vulnerability.

Vulnerability Description

Genian NAC's insufficient validation of file name parameters leads to a severe SSTI issue, enabling threat actors to execute arbitrary code remotely.

Affected Systems and Versions

Genian NAC Suite V4.0 (<= 4.0.145.0831) on Windows
Genian NAC V5.0 & Genian NAC Suite V5.0 (<= 5.0.42.0827) on Windows

Exploitation Mechanism

The vulnerability, categorized as CWE-20 (Improper Input Validation), can be exploited by sending crafted requests to the affected systems, triggering remote code execution.

Mitigation and Prevention

Discover effective strategies to mitigate the risks associated with CVE-2021-26622.

Immediate Steps to Take

Apply security patches provided by Genians Co., Ltd promptly to address the vulnerability.
Implement network segmentation to limit the impact of potential attacks targeting Genian NAC.

Long-Term Security Practices

Regularly update and patch the Genian NAC installations to protect against known vulnerabilities.
Conduct thorough security assessments and audits to identify and remediate any security gaps.

Patching and Updates

Stay informed about security advisories from Genians Co., Ltd and apply relevant patches diligently to safeguard your network from potential exploits.