CVE-2019-16152 : Vulnerability Insights and Analysis

FortiClient for Linux versions 6.2.1 and earlier have a security flaw that could be exploited by a user with limited privileges, leading to a denial of service risk.

Understanding CVE-2019-16152

FortiClientLinux 6.2.1 and below vulnerability affecting Fortinet products.

What is CVE-2019-16152?

FortiClient for Linux 6.2.1 and earlier allows a user with limited privileges to crash processes running with root privileges by sending specially crafted IPC client requests to the fctsched process.

The Impact of CVE-2019-16152

This vulnerability poses a denial of service (DoS) risk by causing FortiClient processes to crash.

Technical Details of CVE-2019-16152

A vulnerability in FortiClient for Linux versions 6.2.1 and below.

Vulnerability Description

User with low privilege can crash FortiClient processes running under root privilege by sending specially crafted IPC client requests to the fctsched process.

Affected Systems and Versions

Fortinet FortiClientLinux 6.2.1 and below.

Exploitation Mechanism

Exploited by sending IPC client requests to the fctsched process, which handles communication via nanomsg.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-16152 vulnerability.

Immediate Steps to Take

Update FortiClientLinux to a version that addresses the vulnerability.
Monitor system logs for any unusual activity.

Long-Term Security Practices

Implement the principle of least privilege to limit user access.
Regularly update and patch software to prevent vulnerabilities.

Patching and Updates

Apply patches and updates provided by Fortinet to fix the vulnerability.