#VIA USB EXTENSIBLE HOST CONTROLLER WINDOWS 7 HOW TO#Even though and myself gave quite precice details of how to do it we were likewise apparently “lid flippers”. The first place you will find this correctly discussed was on this blog, and the “not possible” commenters came out in droves. So when in late 2013 Dragos Ruiu’s story about magic malware that could not be erased came out we already knew exactly how to do it, though the consense was Dragos had “flipped his lid” or was “barking at the moon”. We knew how to do not just the IO hole, but how to use it with another security hole which was “track zero” malware that would easily spread on floppy disks via “sneaker-net”. Many hardware designers who developed very early PC2PC communications looked at using either the PC speaker or an IR LED. This hole has had two majorly visable exploits,Ģ, Lenovo consumer PC’s having un removable malware embedded in the BIOS chip.īut these were by no means the first exploits of this security hole. Even UEFI still carries the security hole forwards in the name of backwards compatability. #VIA USB EXTENSIBLE HOST CONTROLLER WINDOWS 7 UPGRADE#Worse every hardware slot upgrade carried the hole forward. Thus this “security hole” became embedded in all IBM PC OS’s of the time and crossed a tipping point where it became a “legacy issue” that could not be reversed. Only by the 1980’s people were starting to understand that it was a security threat… IBM for their PC did almost exactly the same only in a larger memory map the 8088/6 allowed for. So even though it was a gaping security hole, it was not realised as such. However… That “driver code” that was run as part of the bootup, had to stay untill the OS was fully loaded so it could still be used.īack then in the 1970’s there was no notion of security on a personal computer and especially not any idea about code signing. The result of both these was great flexability to expand in almost any way you could reasonably conceive. #VIA USB EXTENSIBLE HOST CONTROLLER WINDOWS 7 DRIVER#So Apple asigned two kilo-bytes of space to each card slot and had a magic number in the first two bytes that identified a driver was present.Īs for the OS rather than run directly from ROM it ran in part from RAM which was initialised by the “boot-up” process. The solution, put a basic I/O driver on the hardware device, and have it appear in the computers memory map, at a place assigned by the hardware slot it was pluged into. #VIA USB EXTENSIBLE HOST CONTROLLER WINDOWS 7 SOFTWARE#However they also realised there was a “Gordian Knot” issue that any hardware upgrade required a software upgrade, especially boot time storage devices. It’s still there, and not going anywhere any time soon, because it is one of the most usefull features IBM’s “Skunk works” stole from Apple in the 1980’s.Īpple realised that to be usefull and not a cul-de-sac / dead end a computer needed to be able to expand that is to do two basic things,ġ, Have interchangable and upgradable software.Ģ, Have interchangable and upgradable hardware. “Also relevant are the NSA’s capabilities-now a decade old-in this area.”Īlso relevant, as and Creek allude to, is that there is a gaping great hole in the whole “hard reset to loaded OS” process that has been in personal computers of most flavours since the 1970’s… Tags: implants, Kaspersky, malware, reports, rootkits Also relevant are the NSA’s capabilities-now a decade old-in this area. Because it’s the first thing to run when a computer is turned on, it influences the OS, security apps, and all other software that follows.īoth links have lots of technical details the second contains a list of previously discovered UEFI rootkits. #VIA USB EXTENSIBLE HOST CONTROLLER WINDOWS 7 PATCH#It’s located in an SPI-connected flash storage chip soldered onto the computer motherboard, making it difficult to inspect or patch the code. As the software that bridges a PC’s device firmware with its operating system, the UEFI-short for Unified Extensible Firmware Interface-is an OS in its own right. The firmware compromises the UEFI, the low-level and highly opaque chain of firmware required to boot up nearly every modern computer. Kaspersky is reporting on a new UEFI rootkit that survives reinstalling the operating system and replacing the hard drive.
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