CVE-2023-5811 Explained : Impact and Mitigation

This article provides detailed information about CVE-2023-5811, a cross-site scripting vulnerability found in flusity CMS.

Understanding CVE-2023-5811

CVE-2023-5811 is a vulnerability in flusity CMS that affects the function loadPostAddForm of the file core/tools/posts.php. The manipulation of the argument menu_id leads to cross-site scripting, allowing for remote attacks.

What is CVE-2023-5811?

A vulnerability in flusity CMS has been classified as problematic due to a flaw in the loadPostAddForm function of the file core/tools/posts.php. By manipulating the menu_id argument, an attacker can exploit a cross-site scripting vulnerability, enabling attacks to be launched remotely.

The Impact of CVE-2023-5811

The impact of CVE-2023-5811 is rated as low with a CVSS base score of 2.4. This vulnerability could potentially lead to the execution of malicious scripts on the targeted system.

Technical Details of CVE-2023-5811

CVE-2023-5811 is a cross-site scripting vulnerability affecting flusity CMS. The vulnerability allows for the manipulation of the menu_id argument, leading to potential remote code execution.

Vulnerability Description

The vulnerability in flusity CMS arises from the loadPostAddForm function in the file core/tools/posts.php. By manipulating the menu_id argument, an attacker can inject and execute malicious scripts on the targeted system, potentially compromising its security.

Affected Systems and Versions

The affected system is flusity CMS, specifically the function loadPostAddForm of the file core/tools/posts.php. Due to the use of continuous delivery with rolling releases, specific version information is not available.

Exploitation Mechanism

Exploiting CVE-2023-5811 involves manipulating the menu_id argument in the loadPostAddForm function of the file core/tools/posts.php in flusity CMS. This manipulation allows an attacker to inject and execute malicious scripts, leading to cross-site scripting attacks.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2023-5811 and prevent potential exploitation.

Immediate Steps to Take

Apply the provided patch (6943991c62ed87c7a57989a0cb7077316127def8) to fix the vulnerability in flusity CMS.
Regularly monitor for security updates and patches from the vendor to address any security vulnerabilities promptly.

Long-Term Security Practices

Implement security best practices such as input validation and output encoding to mitigate the risk of cross-site scripting vulnerabilities.
Conduct regular security assessments and audits to identify and address any security weaknesses proactively.

Patching and Updates

Keep the CMS updated with the latest patches and security fixes to ensure that known vulnerabilities, such as CVE-2023-5811, are addressed promptly. Regularly check for updates and apply them as soon as they are available.