The setMediaSource function on the amzn.thin.pl service does not sanitize the "source" parameter allowing for arbitrary javascript code to be run This issue affects: Amazon Fire TV Stick 3rd gen versions prior to 6.2.9.5. Insignia TV with FireOS versions prior to 7.6.3.3.
Solution:
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Link | Tags |
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https://www.bitdefender.com/blog/labs/vulnerabilities-identified-amazon-fire-tv-stick-insignia-fire-os-tv-series/ | third party advisory |