CVE-2021-43205 : What You Need to Know

FortiClient for Linux versions 7.0.2 and below, 6.4.7 and below, and 6.2.9 and below are vulnerable to an exposure of sensitive information to an unauthorized actor.

Understanding CVE-2021-43205

FortiClient for Linux contains a vulnerability that may allow unauthenticated attackers to access the confighandler webserver via external binaries.

What is CVE-2021-43205?

The vulnerability in FortiClient for Linux versions 7.0.2 and below, 6.4.7 and below, and 6.2.9 and below exposes sensitive information to unauthorized actors, potentially leading to unauthorized access.

The Impact of CVE-2021-43205

CVSS Base Score: 4.3 (Medium Severity)
Confidentiality Impact: Low
Attackers may exploit this vulnerability to access the confighandler webserver without authentication, posing a risk of unauthorized access.

Technical Details of CVE-2021-43205

Fortinet FortiClientLinux is affected by this vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated attackers to potentially access the confighandler webserver using external binaries.

Affected Systems and Versions

Fortinet FortiClientLinux 7.0.2 and below
Fortinet FortiClientLinux 6.4.7 and below
Fortinet FortiClientLinux 6.2.9 and below

Exploitation Mechanism

The vulnerability can be exploited by unauthorized actors to access the confighandler webserver through external binaries.

Mitigation and Prevention

Users should take immediate action to mitigate the impact of CVE-2021-43205.

Immediate Steps to Take

Update FortiClientLinux to a patched version immediately.
Implement network security measures to restrict unauthorized access.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software to prevent vulnerabilities.
Conduct security training for employees to increase awareness of potential threats.

Patching and Updates

Apply the latest patches provided by Fortinet to address the vulnerability and enhance system security.