Vulnerability identifier: #VU77841
Vulnerability risk: Critical
CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-285
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Ultimate Member – User Profile & Membership Plugin
Web applications /
Modules and components for CMS
Vendor: Ultimate Member
Description
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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Ultimate Member – User Profile & Membership Plugin: 2.6.3 - 2.6.5
External links
http://wordpress.org/support/topic/security-issue-144/#post-16859857
http://www.bleepingcomputer.com/news/security/hackers-exploit-zero-day-in-ultimate-member-wordpress-plugin-with-200k-installs/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.