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CVE-2021-21801 Explained : Impact and Mitigation

Discover the impact and technical details of CVE-2021-21801, a critical vulnerability in Advantech R-SeeNet web applications. Learn about affected systems, exploitation, and mitigation steps.

This CVE-2021-21801 article provides details about a critical vulnerability affecting Advantech R-SeeNet web applications.

Understanding CVE-2021-21801

This section will cover the vulnerability, its impact, and technical details.

What is CVE-2021-21801?

CVE-2021-21801 is a critical vulnerability found in the device_graph_page.php script of Advantech R-SeeNet web applications. An attacker can exploit this flaw by crafting a malicious URL that, when visited by a victim, triggers the execution of arbitrary JavaScript code.

The Impact of CVE-2021-21801

The vulnerability's impact is severe, with a CVSS base score of 9.6 (Critical). It can lead to high confidentiality, integrity, and availability impacts, requiring no special privileges from the attacker.

Technical Details of CVE-2021-21801

This section dives into the specifics of the vulnerability.

Vulnerability Description

The issue resides in the device_graph_page.php script of Advantech R-SeeNet 2.4.12 (20.10.2020) web applications, allowing attackers to execute arbitrary JavaScript code.

Affected Systems and Versions

Advantech R-SeeNet 2.4.12 (20.10.2020) is confirmed to be affected by this vulnerability.

Exploitation Mechanism

By enticing a victim to click on a specially crafted URL, an attacker can execute arbitrary JavaScript code on the target system.

Mitigation and Prevention

To safeguard systems from CVE-2021-21801, immediate actions and long-term security measures are essential.

Immediate Steps to Take

Users are advised to apply security patches, network segmentation, and monitor for any suspicious activities.

Long-Term Security Practices

Regular security training, implementing web application firewalls, and conducting security assessments can enhance overall security posture.

Patching and Updates

Vendors should release patches promptly to address this critical vulnerability in Advantech R-SeeNet 2.4.12 (20.10.2020) versions.

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