CVE-2017-15863 : Security Advisory and Response

WordPress wp-noexternallinks plugin before version 3.5.19 is vulnerable to Cross-Site Scripting (XSS) through specific parameters.

Understanding CVE-2017-15863

This CVE identifies a Cross-Site Scripting vulnerability in the wp-noexternallinks plugin for WordPress.

What is CVE-2017-15863?

The wp-noexternallinks plugin for WordPress before version 3.5.19 contains a Cross-Site Scripting (XSS) vulnerability that can be exploited through specific parameters in a particular file.

The Impact of CVE-2017-15863

This vulnerability could allow attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2017-15863

WordPress wp-noexternallinks plugin is susceptible to XSS attacks due to inadequate input validation.

Vulnerability Description

The vulnerability exists in the wp-noexternallinks plugin before version 3.5.19 for WordPress, specifically through the date1 or date2 parameter in the wp-admin/options-general.php file.

Affected Systems and Versions

Product: WordPress
Vendor: N/A
Versions Affected: Before 3.5.19

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the date1 or date2 parameter within the wp-admin/options-general.php file.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2017-15863.

Immediate Steps to Take

Update the wp-noexternallinks plugin to version 3.5.19 or newer.
Regularly monitor for security advisories and patches from WordPress.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS vulnerabilities.
Educate users and administrators about safe browsing practices and the risks of XSS attacks.

Patching and Updates

Apply security patches promptly to all WordPress plugins and core software to address known vulnerabilities.