PT-2021-11938 · WordPress · Ultimate Member

Published 2021-01-04 · Updated 2021-07-21 · CVE-2020-36157

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N

Name of the Vulnerable Software and Affected Versions: Ultimate Member plugin versions prior to 2.1.12

Description: The issue is related to unauthenticated privilege escalation via user roles. It occurs due to the lack of filtering on the role parameter that can be supplied during the registration process. An attacker could supply the role parameter with a WordPress capability or any custom Ultimate Member role and effectively be granted those privileges.

Recommendations: For Ultimate Member plugin versions prior to 2.1.12, update to version 2.1.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the registration process to prevent exploitation.

Exploit

Fix

Related Identifiers

CVE-2020-36157

Affected Products

Ultimate Member

References · 6

• 🔥 https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3b · Exploit
• 🔥 https://wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin · Exploit
• https://osv.dev/vulnerability/CVE-2020-36157 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-36157 · Security Note
• https://wordpress.org/plugins/ultimate-member/#developers · Note
• https://t.me/cvenotify/8306 · Telegram Post