CVE-2021-36183 : Security Advisory and Response
Discover the details of CVE-2021-36183, an improper authorization vulnerability in Fortinet FortiClient for Windows, allowing privilege escalation to SYSTEM. Learn about the impact, affected versions, and mitigation steps.
A vulnerability has been identified in Fortinet FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below, allowing a local unprivileged attacker to escalate their privileges to SYSTEM. Here is a detailed overview of CVE-2021-36183.
Understanding CVE-2021-36183
This section provides insights into the vulnerability found in Fortinet FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below.
What is CVE-2021-36183?
CVE-2021-36183 is an improper authorization vulnerability in FortiClient for Windows that enables a local unprivileged attacker to elevate their privileges to SYSTEM via the named pipe responsible for FortiClient updates.
The Impact of CVE-2021-36183
The vulnerability poses a high risk with a CVSS base score of 7.2, allowing unauthorized privilege escalation, compromising system confidentiality, integrity, and availability.
Technical Details of CVE-2021-36183
In this section, we delve into the technical aspects of CVE-2021-36183.
Vulnerability Description
The vulnerability lies in the FortiClient for Windows versions specified, enabling a local attacker to exploit the named pipe for update operations.
Affected Systems and Versions
Fortinet FortiClient for Windows versions 7.0.1 and below, along with 6.4.2 and below, are affected by this vulnerability.
Exploitation Mechanism
Attackers can leverage this vulnerability to escalate their privileges to SYSTEM, compromising the target system.
Mitigation and Prevention
Protecting your systems from CVE-2021-36183 involves taking immediate and long-term security measures.
Immediate Steps to Take
Ensure that Fortinet FortiClient for Windows is updated to a secure version. Monitor system logs for any suspicious activity that might indicate an exploit attempt.
Long-Term Security Practices
Implement the principle of least privilege, conduct regular security audits, and train users to identify and report potential security threats.
Patching and Updates
Stay informed about security updates from Fortinet and apply patches promptly to mitigate known vulnerabilities.