CVE-2024-13634 Scanner

The Post Sync Plugin is a WordPress extension developed to synchronize content across multiple WordPress sites. It is widely used by web administrators who manage several WordPress sites simultaneously, allowing them to efficiently manage posts and updates from a central location. This plugin facilitates the automation of content updates, reducing the workload for the user. It is particularly favored in environments where consistent content delivery across platforms is critical. The plugin is beneficial for media companies and bloggers who need to publish content across various sites concurrently.

The vulnerability found in the Post Sync Plugin is a form of Cross-Site Scripting (XSS). This vulnerability arises due to inadequate sanitization and escaping of input parameters before they are outputted on the webpage. An attacker can exploit this flaw by crafting a malicious URL that, when visited by high-privileged users, executes arbitrary scripts in their browser. This vulnerability is especially dangerous as it targets privileged user sessions. Thereby, attackers can potentially hijack sessions or compromise user accounts if successfully exploited.

The technical details of the vulnerability center on a flawed endpoint within the plugin where inputs are not correctly sanitized. The vulnerability manifests in the "/wp-admin/admin.php" page where user input is directly reflected in the response. An attacker generates a crafted URL containing malicious scripts that exploit this endpoint. The vulnerability can be triggered remotely if a high-privileged user clicks on this malicious URL. Consequently, it exposes endpoints where inadequate checks can permit the execution of scripts in user browsers.

Exploiting this XSS vulnerability can lead to severe consequences, especially in environments where the plugin is part of a content management workflow involving high-privileged users. Attackers can execute scripts that might hijack users' sessions, allowing unauthorized access to sensitive information or administrative functions. In the worst-case scenario, it could lead to a full account compromise, granting attackers the ability to make unauthorized changes or extract sensitive data. It can severely undermine trust and the integrity of the WordPress sites involved.

REFERENCES

• https://wpscan.com/vulnerability/0e60bf74-19fb-441c-85a8-005def36af9a/
• https://nvd.nist.gov/vuln/detail/CVE-2024-13634