CVE-2017-17451 Explained : Impact and Mitigation
Learn about CVE-2017-17451, a cross-site scripting (XSS) vulnerability in WP Mailster plugin for WordPress. Find out the impact, affected systems, exploitation, and mitigation steps.
The WP Mailster plugin for WordPress, prior to version 1.5.5, is vulnerable to cross-site scripting (XSS) in the unsubscribe handler due to inadequate handling of the mes parameter in the view/subscription/unsubscribe2.php file.
Understanding CVE-2017-17451
This CVE entry highlights a security vulnerability in the WP Mailster plugin for WordPress that could be exploited for cross-site scripting attacks.
What is CVE-2017-17451?
The CVE-2017-17451 vulnerability involves XSS in the unsubscribe handler of the WP Mailster plugin for WordPress, allowing attackers to execute malicious scripts on the victim's browser.
The Impact of CVE-2017-17451
This vulnerability could lead to unauthorized access to sensitive information, cookie theft, session hijacking, and potentially complete compromise of the affected WordPress website.
Technical Details of CVE-2017-17451
The technical aspects of this CVE include:
Vulnerability Description
The XSS vulnerability in the WP Mailster plugin before version 1.5.5 allows attackers to inject and execute malicious scripts through the mes parameter in the unsubscribe2.php file.
Affected Systems and Versions
- Affected System: WordPress websites using WP Mailster plugin versions prior to 1.5.5
- Affected Version: WP Mailster plugin versions before 1.5.5
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious link containing the mes parameter pointing to the unsubscribe2.php file, which, when clicked by a user with sufficient privileges, executes the injected script.
Mitigation and Prevention
Protect your system from CVE-2017-17451 with the following measures:
Immediate Steps to Take
- Update WP Mailster plugin to version 1.5.5 or later to patch the vulnerability.
- Monitor website activity for any signs of unauthorized access or malicious scripts.
Long-Term Security Practices
- Regularly update all plugins and themes to the latest versions to address security vulnerabilities.
- Implement web application firewalls and security plugins to enhance website security.
Patching and Updates
- Stay informed about security updates and patches released by plugin developers.
- Apply updates promptly to ensure your WordPress website is protected against known vulnerabilities.