Zero-day vulnerability in Elementor Pro

Arbitrary file upload

The vulnerability exploitation was detected on May 06, 2020. The attackers can remotely execute arbitrary code.

Vulnerability details

Advisory: SB2020051118 - Remote code execution in Elementor Pro plugin for WordPress

Vulnerable component: Elementor Pro

CVE-ID:

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

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

Description:

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote authenticated attacker can upload a malicious file and execute it on the blog.

This vulnerability is exploitable if users have open registration, hovewer in conjunction with a vulnerability in Ultimate Addons for Elementor (SB2020051119), it is possible to be exploited, even if the site does not have user registration enabled.

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

External links:

https://www.wordfence.com/blog/2020/05/combined-attack-on-elementor-pro-and-ultimate-addons-for-elem...
https://blog.nintechnet.com/zero-day-vulnerability-exploited-in-elementor-pro/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.