SB2023063049 - Improper authorization in Ultimate Member plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Authorization (CVE-ID: CVE-2023-3460)

CWE-ID: CWE-285 - Improper Authorization

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 the affected website.

The vulnerability exists due to improper authorization within the registration functionality. A remote non-authenticated attacker can register a rouge administrative account and compromise the web application.

Note, the vulnerability is being actively exploited in the wild.

Remediation

Install update from vendor's website.

References

• https://wordpress.org/support/topic/security-issue-144/#post-16859857
• https://www.bleepingcomputer.com/news/security/hackers-exploit-zero-day-in-ultimate-member-wordpress-plugin-with-200k-installs/