CVE-2021-43779 : Exploit Details and Defense Strategies

GLPI addressing plugin in versions < 2.9.1 is vulnerable to authenticated Remote Code Execution. Users are advised to upgrade or disable the plugin.

Understanding CVE-2021-43779

The CVE-2021-43779 vulnerability pertains to a Remote Code Execution issue in the GLPI addressing plugin.

What is CVE-2021-43779?

GLPI, an open-source IT Asset Management system, has a plugin vulnerability in versions < 2.9.1
The flaw allows authenticated remote attackers to execute commands on the server

The Impact of CVE-2021-43779

CVSS Base Score: 9.9 (Critical)
Attack Vector: Network
Scope: Changed
Availability Impact: High
Successful exploitation can lead to unauthorized access to the underlying OS.

Technical Details of CVE-2021-43779

This section covers the technical details of the vulnerability.

Vulnerability Description

Authenticated Remote Code Execution vulnerability in GLPI addressing plugin
Attackers can abuse command injection to access the server's OS

Affected Systems and Versions

GLPI addressing plugin versions < 2.9.1

Exploitation Mechanism

Attackers exploit the plugin's functionality to inject and execute commands on the server

Mitigation and Prevention

Protect your systems from CVE-2021-43779 with the following actions:

Immediate Steps to Take

Upgrade the GLPI addressing plugin to version 2.9.1 or higher
Disable the addressing plugin if upgrading is not feasible

Long-Term Security Practices

Regularly update and patch all software components
Implement strong authentication mechanisms

Patching and Updates

Keep software up to date to prevent vulnerabilities like CVE-2021-43779.