CVE-2023-48771 Explained : Impact and Mitigation

WordPress File Gallery Plugin <= 1.8.5.4 is vulnerable to Cross Site Scripting (XSS).

Understanding CVE-2023-48771

This CVE-2023-48771 involves an 'Improper Neutralization of Input During Web Page Generation' vulnerability in the File Gallery plugin for WordPress, which allows a Reflected XSS attack. This vulnerability affects File Gallery versions from n/a through 1.8.5.4.

What is CVE-2023-48771?

The CVE-2023-48771 vulnerability, also known as CAPEC-591 Reflected XSS, can be exploited by an attacker to execute malicious scripts in a user's browser. This type of attack occurs when an application includes untrusted data in a new web page without proper validation or escaping, leading to the execution of unauthorized code.

The Impact of CVE-2023-48771

The impact of CVE-2023-48771 is rated as HIGH with a CVSS v3.1 base score of 7.1. This vulnerability requires user interaction and can result in compromising user confidentiality, integrity, and availability. With a LOW attack complexity, the exploit does not require any special privileges from the user.

Technical Details of CVE-2023-48771

Vulnerability Description

The vulnerability lies in the improper handling of user input during web page generation in the File Gallery plugin for WordPress, allowing for Reflected XSS attacks. Attackers can craft malicious URLs to inject and execute arbitrary scripts in a victim's browser.

Affected Systems and Versions

The CVE-2023-48771 vulnerability affects File Gallery plugin versions from n/a through 1.8.5.4 for WordPress installations.

Exploitation Mechanism

Exploiting this vulnerability requires the attacker to convince a user to click on a specially crafted link that contains malicious code. Once clicked, the injected script runs in the context of the user's session on the affected website, potentially leading to unauthorized actions.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the risk associated with CVE-2023-48771, users are advised to update the File Gallery plugin to a secure version (post 1.8.5.4) or apply the available patch provided by the vendor. Additionally, users should be cautious while interacting with unknown or suspicious links that may contain malicious payloads.

Long-Term Security Practices

In the long term, it is recommended to regularly update all plugins, themes, and the WordPress core to the latest secure versions. Implementing web application firewalls (WAFs) and conducting security audits can also help in detecting and preventing XSS vulnerabilities.

Patching and Updates

Users should keep a close eye on security advisories from the File Gallery plugin vendor and apply patches promptly. Staying informed about new vulnerabilities and following best security practices can significantly reduce the risk of exploitation.