Improper JPAKE implementation allows offline PIN brute-forcing due to the initialization of random values to a known value, which leads to unauthorized authentication to amzn.lightning services. This issue affects: Amazon Fire TV Stick 3rd gen versions prior to 6.2.9.5. Insignia TV with FireOS 7.6.3.3.

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.

An Improper Enforcement of Behavioral Workflow vulnerability in the exchangeDeviceServices function on the amzn.dmgr service allowed an attacker to register services that are only locally accessible. 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.

Amazon Fire OS before 5.3.6.4 allows a man-in-the-middle attack against HTTP requests for "Terms of Use" and Privacy pages.

Stack-based buffer overflow in the havok_write function in drivers/staging/havok/havok.c in Amazon Fire OS before 2016-01-15 allows attackers to cause a denial of service (panic) or possibly have unspecified other impact via a long string to /dev/hv.