CVE-2021-26110 : What You Need to Know
Understand CVE-2021-26110, an improper access control vulnerability in Fortinet FortiOS, FortiProxy allowing privilege escalation. Learn impact, affected versions, and mitigation steps.
This article provides an overview of CVE-2021-26110, an improper access control vulnerability in Fortinet FortiOS and FortiProxy that may allow privilege escalation for attackers.
Understanding CVE-2021-26110
CVE-2021-26110 is a vulnerability identified in Fortinet FortiOS and FortiProxy products that could enable a low-privileged authenticated attacker to elevate their privileges to super_admin through specific crafted configurations.
What is CVE-2021-26110?
CVE-2021-26110 is an improper access control vulnerability in FortiOS and FortiProxy versions, allowing attackers to escalate their privileges using fabric automation CLI scripts and auto-script features.
The Impact of CVE-2021-26110
The vulnerability poses a high impact on confidentiality, integrity, and availability, with low privileges required for exploitation and a high CVSS base score of 7.8.
Technical Details of CVE-2021-26110
While the attack complexity is low with local attack vector, the exploit code maturity is proof-of-concept. The vulnerability affects FortiOS versions 7.0.0, 6.4.6 and below, 6.2.9 and below, 6.0.12 and below, along with FortiProxy versions 2.0.1 and below, 1.2.9 and below.
Vulnerability Description
The vulnerability stems from an improper access control issue in the FortiOS autod daemon and may allow attackers to gain super_admin privileges.
Affected Systems and Versions
Fortinet FortiOS 7.0.0, 6.4.6 and below, 6.2.9 and below, 6.0.12 and below, FortiProxy 2.0.1 and below, 1.2.9 and below are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by utilizing specific crafted configurations of fabric automation CLI script and auto-script features.
Mitigation and Prevention
It is crucial to take immediate steps to address CVE-2021-26110 to prevent potential exploits and ensure the security of affected systems.
Immediate Steps to Take
Organizations should apply patches provided by Fortinet promptly and review configuration settings to mitigate the risk of privilege escalation.
Long-Term Security Practices
Implementing strict access controls, monitoring system activities, and conducting regular security audits are essential for long-term security.
Patching and Updates
Stay vigilant for security advisories from Fortinet and apply security patches and updates as soon as they are released.