CVE-2021-23418 : Security Advisory and Response

This article provides an overview of CVE-2021-23418, a vulnerability in the Glances package that allows XML External Entity (XXE) Injection. Learn about the impact, technical details, and mitigation strategies related to this CVE.

Understanding CVE-2021-23418

CVE-2021-23418 is a security vulnerability in the Glances package that enables attackers to perform XML External Entity (XXE) Injection, posing a risk to systems using versions prior to 3.2.1.

What is CVE-2021-23418?

The CVE-2021-23418 vulnerability in Glances before version 3.2.1 allows for XML External Entity (XXE) Injection by utilizing Fault to parse untrusted XML data, making it susceptible to XML attacks.

The Impact of CVE-2021-23418

With a CVSS v3.1 base score of 6.3, this vulnerability has a medium severity level. It requires user interaction to exploit and can result in low confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-23418

Get insights into the vulnerability description, affected systems and versions, and the exploitation mechanism of CVE-2021-23418.

Vulnerability Description

The vulnerability in Glances enables XXE Injection through the parsing of untrusted XML data using Fault, which is known to be vulnerable to XML attacks.

Affected Systems and Versions

Glances versions prior to 3.2.1 are impacted by this XXE Injection vulnerability, leaving systems running on these versions at risk.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating XML data to trigger unexpected behaviors in the application, potentially leading to unauthorized access or information disclosure.

Mitigation and Prevention

Discover the immediate steps to take and long-term security practices to safeguard systems against CVE-2021-23418.

Immediate Steps to Take

It is recommended to update Glances to version 3.2.1 or later to patch the XXE Injection vulnerability. Additionally, avoid processing untrusted XML data to mitigate the risk of exploitation.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and stay informed about security updates and patches to prevent similar vulnerabilities in the future.

Patching and Updates

Stay vigilant for security advisories and updates from Glances developers. Apply patches promptly to address known vulnerabilities and enhance the security posture of your systems.