CVE-2023-3543 : Security Advisory and Response

This CVE record pertains to a vulnerability found in GZ Scripts Availability Booking Calendar PHP version 1.8, impacting the component HTTP POST Request Handler. The vulnerability is classified as cross-site scripting (XSS) and allows remote attackers to exploit it via manipulation of specific arguments, potentially leading to unauthorized script execution.

Understanding CVE-2023-3543

In this section, we will delve into the details of CVE-2023-3543, including its nature, impact, technical aspects, and mitigation strategies.

What is CVE-2023-3543?

The vulnerability identified as CVE-2023-3543 exists in GZ Scripts Availability Booking Calendar PHP version 1.8, specifically within the HTTP POST Request Handler component. By manipulating certain arguments, such as cid, first_name, second_name, address_1, and country, attackers can execute cross-site scripting attacks remotely.

The Impact of CVE-2023-3543

The impact of CVE-2023-3543 is significant as it allows malicious actors to inject and execute malicious scripts on the targeted system. This can result in various consequences, including data theft, unauthorized access, and potential compromise of sensitive information stored within the affected application.

Technical Details of CVE-2023-3543

This section will provide a more in-depth look at the technical aspects of CVE-2023-3543, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in GZ Scripts Availability Booking Calendar PHP version 1.8 facilitates cross-site scripting attacks by enabling attackers to manipulate specific arguments within the HTTP POST Request Handler component.

Affected Systems and Versions

GZ Scripts Availability Booking Calendar PHP version 1.8 is confirmed to be affected by CVE-2023-3543. Users operating this specific version of the software are at risk of exploitation unless appropriate measures are taken.

Exploitation Mechanism

The exploitation of CVE-2023-3543 involves the manipulation of arguments like cid, first_name, second_name, address_1, and country within the load.php file of the HTTP POST Request Handler component. This manipulation allows threat actors to inject and execute malicious scripts remotely.

Mitigation and Prevention

In this section, we will discuss essential steps to mitigate and prevent the exploitation of CVE-2023-3543, ensuring the security of systems and data.

Immediate Steps to Take

Implement input validation mechanisms to sanitize user-supplied data and prevent script injection.
Update to a patched version of GZ Scripts Availability Booking Calendar PHP to address the vulnerability.
Monitor and filter network traffic to detect and block malicious attempts targeting the vulnerability.

Long-Term Security Practices

Regularly conduct security assessments and code reviews to identify and address potential vulnerabilities.
Educate developers and administrators on secure coding practices and common web application security threats.
Stay informed about security updates and advisories from software vendors to promptly apply patches and updates.

Patching and Updates

Ensure to regularly update GZ Scripts Availability Booking Calendar PHP to the latest version released by the vendor, containing necessary patches and security fixes to mitigate the risk posed by CVE-2023-3543.