Details ================ Software: iframe Version: 3.0 Homepage: http://ift.tt/1hVBaYb Advisory report: http://ift.tt/1N3PiSh CVE: Awaiting assignment CVSS: 5.8 (Medium; AV:N/AC:M/Au:N/C:P/I:P/A:N) Description ================ Reflected XSS in iframe allows unauthenticated users to do almost anything an admin can Vulnerability ================ If the “get_params_from_url” option is used in the iframe shortcode, the page/post it’s on is opened up to a reflected XSS attack. Proof of concept ================ Paste the following into a post: [iframe src=\"http://www.youtube.com/embed/4qsGTXLnmKs\" width=\"100%\" height=\"500\" get_params_from_url=\"1\"] Visit the post in a browser that doesn’t attempt to mitigate XSS attacks (i.e. Firefox) and add some extra parameters: http://localhost/2015/07/31/iframe/?a=%22%3E%3C/iframe%3E%3Cscript%3Ealert(`hello%20world`)%3C/script%3E Mitigations ================ Upgrade to version 4.0 or later If this is not possible, ensure that the ‘get_params_from_url’ argument is never used in the shortcode. Disclosure policy ================ dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: http://ift.tt/1B6NWzd Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf. This vulnerability will be published if we do not receive a response to this report with 14 days. Timeline ================ 2015-07-31: Discovered 2015-08-05: Reported to vendor via web form on http://ift.tt/1GJ8SBg 2015-08-06: Vendor responded 2015-08-10: Vendor reported fixed in version 4.0 2015-08-10: Published Discovered by dxw: ================ Tom Adams Please visit security.dxw.com for more information.
Source: Gmail -> IFTTT-> Blogger
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