CVE-2017-6815 : What You Need to Know

WordPress versions prior to 4.7.3 are vulnerable to a redirect URL validation issue due to control characters manipulation.

Understanding CVE-2017-6815

WordPress versions before 4.7.3 are susceptible to a security flaw that can be exploited by deceiving the redirect URL validation mechanism.

What is CVE-2017-6815?

This CVE refers to a vulnerability in WordPress versions earlier than 4.7.3, specifically in the wp-includes/pluggable.php file, where control characters can be used to deceive the URL validation process.

The Impact of CVE-2017-6815

The vulnerability allows attackers to manipulate URLs through control characters, potentially leading to unauthorized redirects and phishing attacks.

Technical Details of CVE-2017-6815

WordPress CVE-2017-6815 involves the following technical aspects:

Vulnerability Description

Control characters can trick the redirect URL validation process in WordPress versions prior to 4.7.3, enabling malicious redirection.

Affected Systems and Versions

Affected: WordPress versions before 4.7.3
Not affected: Versions from 4.7.3 onwards

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting control characters in URLs, bypassing validation and redirecting users to malicious sites.

Mitigation and Prevention

Protect your WordPress installation from CVE-2017-6815 with these measures:

Immediate Steps to Take

Update WordPress to version 4.7.3 or later to patch the vulnerability.
Be cautious when clicking on URLs to avoid falling victim to malicious redirects.

Long-Term Security Practices

Regularly update WordPress and plugins to mitigate potential security risks.
Implement security plugins or web application firewalls to enhance protection against URL manipulation.
Educate users on recognizing and avoiding phishing attempts through suspicious URLs.

Patching and Updates

Ensure timely installation of WordPress updates and security patches to address known vulnerabilities.