CVE-2021-41023 : Security Advisory and Response

A vulnerability in Fortinet FortiSIEM Windows Agent allows disclosure of agent password due to plaintext credential storage in log files.

Understanding CVE-2021-41023

A vulnerability in Fortinet FortiSIEM Windows Agent version 4.1.4 and below may lead to the disclosure of sensitive information.

What is CVE-2021-41023?

The vulnerability stems from unprotected storage of credentials in the Fortinet FortiSIEM Windows Agent. An authenticated user could exploit this issue to disclose the agent password due to plaintext credential storage in log files.

The Impact of CVE-2021-41023

The vulnerability has a CVSS base score of 5.5 (Medium). Its confidentiality impact is high, with a low complexity of attack vector and privileges required. Though the availability impact is none, this issue could still compromise the security of affected systems.

Technical Details of CVE-2021-41023

The technical details shed light on the specific aspects of the vulnerability.

Vulnerability Description

The vulnerability allows an authenticated user to access log files containing plaintext credentials, leading to the disclosure of the agent password.

Affected Systems and Versions

Fortinet FortiSIEM Windows Agent versions 4.1.4 and below are affected by this vulnerability.

Exploitation Mechanism

An authenticated user can exploit the vulnerability by accessing log files where credentials are stored in plaintext.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices is crucial to mitigate the risk posed by CVE-2021-41023.

Immediate Steps to Take

Update Fortinet FortiSIEM Windows Agent to a patched version that addresses the vulnerability.
Monitor and restrict access to log files containing sensitive information.

Long-Term Security Practices

Implement encryption for stored credentials to prevent plaintext exposure.
Regularly review and update security configurations to address similar vulnerabilities.

Patching and Updates

Apply official fixes or patches provided by Fortinet to secure the FortiSIEM Windows Agent against this vulnerability.