CVE-2019-19589 : Exploit Details and Defense Strategies
Learn about the disputed vulnerability in the Lever PDF Embedder plugin version 4.4 for WordPress, potentially allowing the distribution of polyglot PDF documents that are valid JAR archives. Find mitigation steps and best practices.
The Lever PDF Embedder plugin for WordPress version 4.4 has a disputed vulnerability related to the distribution of polyglot PDF documents that are valid JAR archives.
Understanding CVE-2019-19589
This CVE entry highlights a controversial vulnerability in the Lever PDF Embedder plugin for WordPress version 4.4.
What is CVE-2019-19589?
The reported vulnerability suggests that the plugin does not prevent the distribution of polyglot PDF documents that can be executed as JAR archives, potentially leading to security risks.
The Impact of CVE-2019-19589
The impact of this CVE is disputed due to the argument that the plugin does not control the file upload process, and the responsibility lies with the WordPress site owner for managing PDF uploads.
Technical Details of CVE-2019-19589
This section delves into the technical aspects of the CVE.
Vulnerability Description
The Lever PDF Embedder plugin version 4.4 for WordPress is alleged to allow the distribution of polyglot PDF files that can be executed as JAR archives, posing a potential security threat.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability involves the distribution of polyglot PDF documents that are valid JAR archives, potentially allowing malicious actors to exploit the plugin.
Mitigation and Prevention
Protective measures to address the CVE.
Immediate Steps to Take
- Site owners should be cautious when uploading PDF files to WordPress to prevent the distribution of polyglot files.
- Implement additional security measures during the upload process to block potentially harmful files.
Long-Term Security Practices
- Regularly update the WordPress core and plugins to ensure the latest security patches are in place.
- Educate users on safe file upload practices to mitigate the risk of distributing malicious files.
Patching and Updates
Stay informed about security updates for the Lever PDF Embedder plugin and promptly apply patches to address any known vulnerabilities.