SB2020090202 - Arbitrary file upload in File Manager plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Arbitrary file upload (CVE-ID: CVE-2020-25213)

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload in wp-file-manager in the "lib/php/connector.minimal.php" and "lib/files/hardfork.php" files. A remote attacker can upload a malicious file and execute it on the server.

Note: The vulnerability is being actively exploited in the wild. 

Remediation

Install update from vendor's website.

References

• https://wpvulndb.com/vulnerabilities/10389/
• https://blog.nintechnet.com/critical-zero-day-vulnerability-fixed-in-wordpress-file-manager-700000-i...
• https://blog.sucuri.net/2020/09/critical-vulnerability-file-manager-affecting-700k-wordpress-website...