CVE-2019-15711 Explained : Impact and Mitigation

FortiClient for Linux versions 6.2.1 and earlier has a privilege escalation vulnerability that allows a user with limited privileges to execute system commands as a root user.

Understanding CVE-2019-15711

This CVE identifies a privilege escalation flaw in FortiClient for Linux versions 6.2.1 and below.

What is CVE-2019-15711?

The vulnerability in FortiClient for Linux versions 6.2.1 and earlier allows a user with restricted privileges to run system commands as a root user by injecting customized "ExportLogs" type IPC client requests into the fctsched process.

The Impact of CVE-2019-15711

The vulnerability could potentially lead to unauthorized access and control of the affected system, posing a significant security risk.

Technical Details of CVE-2019-15711

FortiClientLinux 6.2.1 and below is affected by this privilege escalation vulnerability.

Vulnerability Description

The flaw enables a user with limited privileges to escalate their access and execute commands as a root user.

Affected Systems and Versions

Product: Fortinet FortiClientLinux
Vendor: Fortinet
Versions Affected: FortiClientLinux 6.2.1 and below

Exploitation Mechanism

The vulnerability is exploited by injecting specially crafted "ExportLogs" type IPC client requests into the fctsched process.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Apply security patches provided by Fortinet promptly.
Monitor system logs for any suspicious activities.
Restrict user privileges to minimize the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security audits and assessments to identify and mitigate vulnerabilities.
Educate users on best practices for system security.

Patching and Updates

Ensure that FortiClient for Linux is updated to a secure version that addresses the privilege escalation vulnerability.