CVE-2023-29183 : Security Advisory and Response

This CVE-2023-29183 article provides insights into a Cross-Site Scripting vulnerability impacting Fortinet's FortiProxy and FortiOS products.

Understanding CVE-2023-29183

In this section, we will delve into the details of CVE-2023-29183 to understand the vulnerability, its impact, technical details, and mitigation steps.

What is CVE-2023-29183?

CVE-2023-29183 involves an improper neutralization of input during web page generation, leading to a Cross-Site Scripting vulnerability in FortiProxy and FortiOS. This vulnerability may enable an authenticated attacker to execute malicious JavaScript code via crafted guest management settings.

The Impact of CVE-2023-29183

The vulnerability poses a high severity risk, with an attack vector through the network. It requires low privileges for exploitation but necessitates user interaction. The confidentiality, integrity, and availability of affected systems could be significantly compromised.

Technical Details of CVE-2023-29183

Let's explore the technical aspects underlying CVE-2023-29183 further.

Vulnerability Description

The vulnerability, classified under CWE-79, allows attackers to execute unauthorized code or commands via the injection of malicious JavaScript code in the GUI of FortiProxy and FortiOS versions.

Affected Systems and Versions

FortiProxy versions 7.2.0 through 7.2.4, 7.0.0 through 7.0.10, and FortiOS versions 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.12, 6.2.0 through 6.2.14 are confirmed to be affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by an authenticated attacker manipulating guest management settings to inject malicious JavaScript code, rendering it capable of execution within the affected GUI.

Mitigation and Prevention

Understanding the steps to mitigate and prevent vulnerabilities like CVE-2023-29183 is crucial for maintaining system security.

Immediate Steps to Take

It is advised to upgrade FortiProxy to version 7.2.5 or above, version 7.0.11 or above, and FortiOS to version 7.4.0 or above, 7.2.5 or above, 7.0.12 or above, 6.4.13 or above, and 6.2.15 or above to address the vulnerability.

Long-Term Security Practices

In addition to immediate patches, organizations should implement robust security practices, including regular security assessments, employee training on secure coding practices, and monitoring for potential security loopholes.

Patching and Updates

Regularly apply security patches provided by Fortinet to ensure the protection of systems against known vulnerabilities.