CVE-2023-49189 : Exploit Details and Defense Strategies

A Cross-site Scripting (XSS) vulnerability has been identified in the GetSocial, S.A. Social Share Buttons & Analytics Plugin – GetSocial.io plugin, impacting versions up to 4.3.12 of the plugin.

Understanding CVE-2023-49189

This CVE identifies a specific vulnerability in the WordPress Social Share Buttons & Analytics Plugin – GetSocial.io that allows for stored XSS attacks.

What is CVE-2023-49189?

The CVE-2023-49189 vulnerability involves improper neutralization of input during web page generation, specifically related to Cross-site Scripting (XSS) attacks. This vulnerability allows malicious actors to execute scripts in a victim's browser, potentially compromising the security and integrity of the website.

The Impact of CVE-2023-49189

The impact of CVE-2023-49189, also known as CAPEC-592 Stored XSS, is rated as LOW for confidentiality, integrity, and availability impacts. However, the base severity score is rated as MEDIUM (5.9) due to the privileges required for exploitation and the user interaction needed.

Technical Details of CVE-2023-49189

The CVE-2023-49189 vulnerability is classified under CWE-79 - Improper Neutralization of Input During Web Page Generation (Cross-site Scripting). The affected plugin allows for Stored XSS attacks, affecting versions up to 4.3.12.

Vulnerability Description

The vulnerability arises from the improper handling of input data during web page generation, leading to the execution of malicious scripts.

Affected Systems and Versions

Systems using the GetSocial, S.A. Social Share Buttons & Analytics Plugin – GetSocial.io versions from n/a through 4.3.12 are vulnerable to this XSS exploit.

Exploitation Mechanism

Malicious actors can leverage the vulnerability in the plugin to inject and execute malicious scripts on web pages, potentially leading to data theft, unauthorized actions, or website defacement.

Mitigation and Prevention

To address CVE-2023-49189 and prevent exploitation, immediate action and long-term security practices are crucial.

Immediate Steps to Take

Disable or uninstall the affected plugin immediately if it is not essential for website functionality.
Implement a web application firewall (WAF) to filter and block malicious traffic attempting to exploit XSS vulnerabilities.

Long-Term Security Practices

Regularly update and patch all plugins and software to ensure known vulnerabilities are addressed promptly.
Educate website administrators and developers on secure coding practices to prevent XSS vulnerabilities in custom code.

Patching and Updates

Keep the GetSocial, S.A. Social Share Buttons & Analytics Plugin – GetSocial.io updated to the latest version to apply security patches and mitigate the risk of XSS attacks.