CVE-2023-42787 : Vulnerability Insights and Analysis

A client-side enforcement of server-side security vulnerability in Fortinet FortiManager and FortiAnalyzer may allow a remote attacker to access a privileged web console through client-side code execution.

Understanding CVE-2023-42787

This section provides insight into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-42787?

CVE-2023-42787 is a client-side enforcement of server-side security vulnerability affecting Fortinet FortiManager and FortiAnalyzer versions 7.4.0 and earlier versions.

The Impact of CVE-2023-42787

The vulnerability may enable a remote attacker with low privileges to gain unauthorized access to a privileged web console via client-side code execution.

Technical Details of CVE-2023-42787

Below are technical details regarding the vulnerability:

Vulnerability Description

The flaw is categorized under Improper Access Control (CWE-602) and exists in FortiManager version 7.4.0 and below 7.2.3, as well as FortiAnalyzer version 7.4.0 and before 7.2.3.

Affected Systems and Versions

FortiManager: Versions 6.2.0 to 7.2.3
FortiAnalyzer: Versions 6.2.0 to 7.2.3

Exploitation Mechanism

The vulnerability allows a remote attacker to execute client-side code and access privileged web consoles by exploiting improper access controls.

Mitigation and Prevention

To safeguard against CVE-2023-42787, consider the following mitigation measures:

Immediate Steps to Take

Upgrade to the following versions or above:

FortiManager: 7.4.1
FortiManager: 7.2.4
FortiAnalyzer: 7.4.1
FortiAnalyzer: 7.2.4

Long-Term Security Practices

Employ robust access controls, conduct regular security audits, and keep all software up to date to mitigate similar vulnerabilities.

Patching and Updates

Regularly monitor vendor security advisories, apply patches promptly, and ensure systems are updated to the latest secure versions.