Date: Fri, 13 Feb 2009 09:24:52 +0100
From: Pierre Dinh-van <pierre@qsdf.org.>
To: [email protected], [email protected]Subject: cryptsetup can't destroy last key of a LUKS partition under Ubuntu/Debian
Message-ID: <20090213082452.GA19392@qsdf.org.>
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Hello everyone,
I noticed last week that the Debian packaged version of cryptsetup has a
little limitation, which could be a security issue for people who have to
destroy their data forever.=20
It is impossible to destroy a keyslot when you used it to unlock the master
key.
I reported the bug to debian (etch and lenny are affected as far as I teste=
d):
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D513596
and to ubuntu (tested on hardy):
https://bugs.launchpad.net/cryptsetup/+bug/324871
It's not a major security problem, but people who were planning to run=20
'cryptsetup luksDelKey /dev/sda1 0' on their installation when the police=
=20
comes to wake them up should be adviced that it won't work out of the box.
Cheers,
Pierre Dinh-van
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