DOM-Based XSS in Pascal Birchler Preferred Languages

Executive Summary

CVE-2024-35644 is a Cross Site Scripting (XSS) vulnerability found in the WordPress Preferred Languages Plugin versions up to and including 2.2.2.

This vulnerability occurs due to improper neutralization of input during web page generation, specifically a DOM-Based XSS issue.

It allows an attacker with administrator-level privileges to inject malicious scripts that execute when users visit the compromised website.

Exploitation requires user interaction, such as clicking a malicious link or submitting a crafted form.

The vulnerability has a moderate severity with a CVSS score of 5.9 and is classified under the OWASP Top 10 category A3: Injection.

The issue was fixed in version 2.3.0 of the plugin.

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Impact Analysis

If exploited, this vulnerability allows an attacker to inject malicious scripts into the website.

These scripts can perform actions such as redirecting users, displaying unwanted advertisements, or executing other harmful HTML payloads.

Because exploitation requires administrator privileges and user interaction, the overall threat is considered low priority.

However, successful exploitation can lead to compromised user experience and potential security risks for visitors.

Updating the plugin to version 2.3.0 or later mitigates this risk.

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Compliance Impact

I don't know

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Detection Guidance

This vulnerability is a DOM-Based Cross-Site Scripting (XSS) issue in the Preferred Languages WordPress plugin up to version 2.2.2. Detection typically involves identifying if the vulnerable plugin version is installed and checking for suspicious script injections or unusual behavior triggered by user interactions such as clicking links or submitting forms.

Since the vulnerability requires administrator privileges and user interaction, detection can include verifying the plugin version and monitoring for injected scripts in web pages generated by the plugin.

Specific commands to detect the vulnerability are not provided in the available resources.

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Mitigation Strategies

The immediate mitigation step is to update the Preferred Languages WordPress plugin to version 2.3.0 or later, where this vulnerability has been patched.

Users are also advised to apply automated updates if available, such as those offered by Patchstack, to rapidly address the vulnerability.

Additionally, limiting administrator-level access and being cautious with user interactions that could trigger the vulnerability can reduce risk until the update is applied.

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