CVE-2021-26108 : Security Advisory and Response

This article provides an overview of CVE-2021-26108, a vulnerability found in Fortinet FortiOS before version 7.0.1 that could lead to the disclosure of a hard-coded cryptographic key through SSLVPN.

Understanding CVE-2021-26108

CVE-2021-26108 is a vulnerability in Fortinet FortiOS that allows attackers to retrieve a hard-coded cryptographic key by reverse engineering.

What is CVE-2021-26108?

The vulnerability exists in the SSLVPN component of FortiOS versions before 7.0.1. Attackers could exploit this issue to access sensitive information.

The Impact of CVE-2021-26108

With a CVSS base score of 7.5 (High), this vulnerability poses a significant risk to confidentiality, potentially exposing sensitive data to unauthorized individuals.

Technical Details of CVE-2021-26108

This section delves into the specific technical aspects of CVE-2021-26108.

Vulnerability Description

The vulnerability in the SSLVPN of FortiOS before 7.0.1 allows attackers to recover the cryptographic key through reverse engineering, leading to potential information disclosure.

Affected Systems and Versions

Fortinet FortiOS versions before 7.0.1 are impacted by this vulnerability, requiring immediate attention from users to mitigate the risk.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely via a network connection with low complexity, highlighting the importance of prompt security measures.

Mitigation and Prevention

Here are some key steps to address and prevent potential exploitation of CVE-2021-26108.

Immediate Steps to Take

Users are advised to update FortiOS to version 7.0.1 or higher to eliminate the vulnerability and enhance system security.

Long-Term Security Practices

Regularly updating software and implementing secure coding practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates from Fortinet and promptly apply patches to safeguard your systems.