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[hardened] Gentoo, security, RAM-contents, wiping, paranoia
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kernelOfTruth
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Joined: 20 Dec 2005
Posts: 5675
Location: Vienna, Austria; Germany; hello world :)

PostPosted: Tue Apr 22, 2014 5:47 pm    Post subject: [hardened] Gentoo, security, RAM-contents, wiping, paranoia Reply with quote

Hi,

wouldn't it be nice to have the option in hardened gentoo to wipe RAM-content during shutdown (if it only takes seconds, according to the "Tails" security distribution - why not ?) ?

https://tails.boum.org/contribute/design/memory_erasure/


Discuss :)
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Last edited by kernelOfTruth on Wed Apr 23, 2014 12:05 pm; edited 1 time in total
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Yamakuzure
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Joined: 21 Jun 2006
Posts: 1347
Location: Bardowick, Germany

PostPosted: Wed Apr 23, 2014 10:57 am    Post subject: Reply with quote

And wiping RAM before the power gets OFF helps against what exactly? (Just wondering what anybody could read from the chips when they have lost all electricity...)
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kernelOfTruth
Watchman
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Joined: 20 Dec 2005
Posts: 5675
Location: Vienna, Austria; Germany; hello world :)

PostPosted: Wed Apr 23, 2014 11:57 am    Post subject: Reply with quote

afaik the most important thing: encryption keys

http://en.wikipedia.org/wiki/Cold_boot_attack

http://superuser.com/questions/464297/wipe-ram-on-shut-down-to-prevent-cold-boot-attack


hm, only older RAM (DDR, DDR2) seem to be affected - newer systems not ? [mentioned in the 2nd link]) - interesting ...


seems like


Autostart after Power loss
RAM check at boot time

enabling in BIOS mitigates the problem
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