Amazon Fire OS 7 before 7.6.6.9 and 8 before 8.1.0.3 allows Fire TV applications to establish local ADB (Android Debug Bridge) connections. NOTE: some third parties dispute whether this has security relevance, because an ADB connection is only possible after the (non-default) ADB Debugging option is enabled, and after the initiator of that specific connection attempt has been approved via a full-screen prompt.

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.

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.

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.

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 havokwrite 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.

kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the kernel component in Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/gcioctl with the command 3222560159 and cause a kernel crash.

kernel/omap/drivers/mfd/twl6030-gpadc.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/twl6030-gpadc with the command 24832 and cause a kernel crash.

kernel/omap/drivers/video/omap2/dsscomp/device.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/dsscomp with the command 1118064517 and cause a kernel crash.

kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/gcioctl with the command 3221773726 and cause a kernel crash.

kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the kernel component in Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/gcioctl with the command 1077435789 and cause a kernel crash.

kernel/omap/drivers/rpmsg/rpmsgomx.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device file /dev/rpmsg-omx1 with the command 3221772291, and cause a kernel crash.

kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/gcioctl with the command 3224132973 and cause a kernel crash.