CVE-2019-8942 : Vulnerability Insights and Analysis

WordPress versions prior to 4.9.9 and 5.x prior to 5.0.1 are vulnerable to remote code execution due to a specific manipulation of image metadata.

Understanding CVE-2019-8942

Vulnerabilities in WordPress versions prior to 4.9.9 and 5.x prior to 5.0.1 allow attackers to execute remote code by exploiting image metadata.

What is CVE-2019-8942?

Attackers can alter the _wp_attached_file Post Meta entry to include a string ending with ".jpg?file.php" to execute remote code.
By manipulating Exif metadata in an image, an attacker with author privileges can upload PHP code, leading to arbitrary code execution.

The Impact of CVE-2019-8942

Allows attackers to execute remote code on vulnerable WordPress versions.

Technical Details of CVE-2019-8942

WordPress vulnerability details and affected systems.

Vulnerability Description

WordPress versions before 4.9.9 and 5.x before 5.0.1 are susceptible to remote code execution.

Affected Systems and Versions

WordPress versions prior to 4.9.9 and 5.x prior to 5.0.1.

Exploitation Mechanism

Attackers exploit the _wp_attached_file Post Meta entry and manipulate Exif metadata in images to upload PHP code.

Mitigation and Prevention

Protecting systems from CVE-2019-8942.

Immediate Steps to Take

Update WordPress to versions 4.9.9 or 5.0.1 or later.
Monitor for any unauthorized file uploads.

Long-Term Security Practices

Regularly update WordPress and plugins to the latest versions.
Implement least privilege access controls to limit potential damage.
Educate users on safe practices to prevent unauthorized uploads.

Patching and Updates

Apply security patches provided by WordPress to address the vulnerability.