CVE-2023-3969 : Exploit Details and Defense Strategies

This CVE involves a vulnerability in GZ Scripts Availability Booking Calendar PHP, specifically in the HTTP POST Request Handler component, leading to cross-site scripting.

Understanding CVE-2023-3969

This vulnerability affects GZ Scripts Availability Booking Calendar PHP version 1.0 due to an issue in the index.php file of the HTTP POST Request Handler module. The manipulation of the promo_code argument can result in cross-site scripting. The exploit for this vulnerability has been publicly disclosed.

What is CVE-2023-3969?

The CVE-2023-3969 vulnerability is classified as problematic, allowing remote attackers to launch cross-site scripting attacks by manipulating the promo_code argument in GZ Scripts Availability Booking Calendar PHP version 1.0.

The Impact of CVE-2023-3969

Successful exploitation of this vulnerability can lead to unauthorized access to sensitive information, cookie theft, session hijacking, defacement of websites, and potentially other malicious activities, posing a significant risk to affected systems.

Technical Details of CVE-2023-3969

This vulnerability has been assigned a CVSSv3 base score of 3.5, indicating a low severity level. The CVSSv3 vector string highlights that the attack complexity is low, requiring no privileges to exploit it. The vulnerability affects the integrity and confidentiality of the system.

Vulnerability Description

The vulnerability in GZ Scripts Availability Booking Calendar PHP version 1.0 allows attackers to execute arbitrary code by manipulating the promo_code argument in the HTTP POST Request Handler component, leading to cross-site scripting vulnerabilities.

Affected Systems and Versions

Vendor: GZ Scripts
Product: Availability Booking Calendar PHP
Version: 1.0
Affected Module: HTTP POST Request Handler

Exploitation Mechanism

Attackers can exploit CVE-2023-3969 by remotely manipulating the promo_code argument in the index.php file of the HTTP POST Request Handler module, facilitating cross-site scripting attacks.

Mitigation and Prevention

It is crucial for organizations to implement immediate steps to mitigate the risks posed by CVE-2023-3969 and establish long-term security practices to prevent similar vulnerabilities in the future.

Immediate Steps to Take

Update to a patched version of the GZ Scripts Availability Booking Calendar PHP to address the vulnerability.
Implement input validation to sanitize user-supplied data and prevent malicious code execution.
Regularly monitor and audit web applications for security vulnerabilities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate developers and IT staff on secure coding practices to prevent common web application security issues.
Stay informed about security advisories and updates related to software components used in web applications.

Patching and Updates

Ensure prompt installation of security patches and updates provided by GZ Scripts to remediate CVE-2023-3969 and enhance the overall security posture of the affected systems. Regularly check for new patches and apply them as soon as they are available to prevent exploitation.