Zero-day vulnerability in Related Posts

Improper access control

Not patched

Improper access control vulnerability in the plugin allowed attacker to inject malicious JavaScript code and redirect users to phishing websites.

Vulnerability details

Advisory: SB2019041201 - Improper access control in Yuzo Related Posts WordPress plugin

Vulnerable component: Related Posts

CVE-ID:

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

CWE-ID: CWE-284 - Improper Access Control

Description:

The vulnerability allows a remote attacker to gain unauthorized access to the website.

The vulnerability exists due to improper access restrictions when processing HTTP requests. A remote attacker can pass specially crafted configuration to the affected application and inject arbitrary JavaScript code WordPress configuration.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable application.

Note: the vulnerability is being actively exploited i the wild.

External links:

https://blog.sucuri.net/2019/04/attacks-on-closed-wordpress-plugins.html

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.