Vulnerability Description
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 remote_upload 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| 3Cx | Live Chat | < 8.0.26 |
Related Weaknesses (CWE)
References
- https://wordpress.org/plugins/wp-live-chat-support/#developersThird Party Advisory
- https://wp-livechat.com/Vendor Advisory
- https://wpvulndb.com/vulnerabilities/9320ExploitThird Party Advisory
- https://wordpress.org/plugins/wp-live-chat-support/#developersThird Party Advisory
- https://wp-livechat.com/Vendor Advisory
- https://wpvulndb.com/vulnerabilities/9320ExploitThird Party Advisory
FAQ
What is CVE-2019-11185?
CVE-2019-11185 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ach...
How severe is CVE-2019-11185?
CVE-2019-11185 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-11185?
Check the references section above for vendor advisories and patch information. Affected products include: 3Cx Live Chat.