Researchers Uncover Way to Hack BIOS and Undermine Secure Operating Systems
(Wired): http://www.wired.com/2015/03/researchers-uncover-way-hack-bios-undermine-secure-operating-systems/ "Their malware, dubbed LightEater, uses the incursion vulnerabilities to break into and hijack the system management mode to gain escalated privileges on the system. System management mode, or SMM, is an operations mode in Intel processors that firmware uses to do certain functions with high-level system privileges that exceed even administrative and root-level privileges, Kovah notes. Using this mode, they can rewrite the contents of the BIOS chip to install an implant that gives them a persistent and stealth foothold. From there, they can install root kits and steal passwords and other data from the system. But more significantly, SMM gives their malware the ability to read all data and code that appears in a machine's memory. This would allow their malware, Kovah points out, to subvert any computer using the Tails operating system--the security and privacy-oriented operating system Edward Snowden and journalist Glenn Greenwald used to handle NSA documents Snowden leaked. By reading data in memory, they could steal the encryption key of a Tails user to unlock encrypted data or swipe files and other content as it appears in memory. Tails is meant to be run from a secure USB flash drive or other removable media--so that conceivably it won't be affected by viruses or other malware that may have infected the computer. It operates in the computer's memory and once the operating system is shut down, Tails scrubs the RAM to erase any traces of its activity. But because the LightEater malware uses the system management mode to read the contents of memory, it can grab the data while in memory before it gets scrubbed and store it in a safe place from which it can later be exfiltrated. And it can do this while all the while remaining stealth." - - - Surprised? You shouldn't be. --Lauren-- Lauren Weinstein ([email protected]): http://www.vortex.com/lauren Founder: - Network Neutrality Squad: http://www.nnsquad.org - PRIVACY Forum: http://www.vortex.com/privacy-info Co-Founder: People For Internet Responsibility: http://www.pfir.org/pfir-info Member: ACM Committee on Computers and Public Policy Lauren's Blog: http://lauren.vortex.com Google+: http://google.com/+LaurenWeinstein Twitter: http://twitter.com/laurenweinstein Tel: +1 (818) 225-2800 / Skype: vortex.com _______________________________________________ pfir mailing list http://lists.pfir.org/mailman/listinfo/pfir
