CVE-2019-11185: Malicious File Upload
The WP Live Chat Support Pro plugin through 8.0.26 for WordPress contains an arbitrary file upload vulnerability. This results from an incomplete patch for CVE-2018-12426. Arbitrary file upload is achieved by using a non-blacklisted executable file extension in conjunction with a whitelisted file extension, and prepending "magic bytes" to the payload to pass MIME checks. Specifically, an unauthenticated remote user submits a crafted file upload POST request to the REST api remoteupload endpoint. The file contains data that will fool the plugin's MIME check into classifying it as an image (which is a whitelisted file extension) and finally a trailing .phtml file extension.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for the WP Live Chat Support Pro plugin?
The vulnerability ID for the WP Live Chat Support Pro plugin is CVE-2019-11185.
What is the severity level of the CVE-2019-11185 vulnerability?
The severity level of the CVE-2019-11185 vulnerability is critical with a score of 9.8.
How does the vulnerability in the WP Live Chat Support Pro plugin occur?
The vulnerability in the WP Live Chat Support Pro plugin occurs due to an arbitrary file upload vulnerability resulting from an incomplete patch for CVE-2018-12426.
What is the affected software for the CVE-2019-11185 vulnerability?
The affected software for the CVE-2019-11185 vulnerability is the WP Live Chat Support Pro plugin version up to and excluding 8.0.26 for WordPress.
Is there a patch or fix available for the CVE-2019-11185 vulnerability?
Yes, it is recommended to update the WP Live Chat Support Pro plugin to a version that includes a complete fix for the vulnerability.