Recently, China's biggest producers of ARM processor of all volunteers were accused of science and technology, in the firmware found in possession of a Root can make tablet PC remote administrator the supreme authority of the back door program...

China's famous production of tablets and all Android devices ARM processor IC design companies (Allwinner) of science and technology, has been revealed, found in the processor's Firmware (Firmware), there is a engineer left the back door of the program, users need only the remote transmit simple text instructions "rootmydevice", you can get top management (Root) access to the tablet. Currently affected product model is eight core A83T and H8 processor, as well as the four core H3 processor, these processors are used in Chinese tablet and OTT STB product.

This backdoor is to facilitate the engineer can remote test, can improve the user's authority, even if the manufacturer stressed that may be because of work, because of the substitution test, or because they are not specifically documented in the file manual, so "forgot" to delete. But for the development of senior engineer, these are all should not happen. Therefore, used for all volunteers, ARM processor manufacturers will have to ask: "if such an important program code can forget to delete, the overall program code and strict quality control, how reassuring?"

The flaw initial source, however, David Manouchehri, then put him in a lot of fact information deleted, also fuelled speculation. Before all volunteers technology involves many times because they don't open the Linux/Android/U - the Boot kernel source and was charged with violation of the GPL, warning after all volunteers continue to violate open source (L), under the GPL and change the code to make it become an identification. The reserved back door event can also be forget to delete the debug mode after development and debugging code, all science and technology, with no comment for this matter.

In ARM's BBS armbian, also somebody said, "the difficulty of local attack is similar to send the girl to your home, eat to live are you in charge, let you win, not little eunuch problem." This time the back door of the program is not the back door, but bad "access control", but it is not much of a problem. According to understand, because all volunteers technology is a few open source vendors in China, and the backdoor is available through the remote.

Now all volunteers technology ARM processor operating system version is 3.4 Sunxi Linux, this is a modification of the Linux operating system, designed to write all volunteers technology ARM processor firmware; As for the other like the Android tablet use operating system, will add on the firmware.

According to Chinese ccid consulting information, all the volunteers technology is well-known IC design companies in China, the ARM processor is mainly used for all kinds of white tablets, as well as a variety of OTT boxes, car networking and wearable devices, but also drive the Chinese white card tablet is one of the important among manufacturers. All volunteers technology ARM processor shipments in 2012, was once a Chinese city (35.9%) of the largest manufacturers, mediatek shipments in 2014 and Taiwan neck and neck; By 2015 processor sales, 17% share.