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view libtomcrypt/notes/base64_tv.txt @ 1930:299f4f19ba19

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Add /usr/sbin and /sbin to default root PATH When dropbear is used in a very restricted environment (such as in a initrd), the default user shell is often also very restricted and doesn't take care of setting the PATH so the user ends up with the PATH set by dropbear. Unfortunately, dropbear always sets "/usr/bin:/bin" as default PATH even for the root user which should have /usr/sbin and /sbin too. For a concrete instance of this problem, see the "Remote Unlocking" section in this tutorial: https://paxswill.com/blog/2013/11/04/encrypted-raspberry-pi/ It speaks of a bug in the initramfs script because it's written "blkid" instead of "/sbin/blkid"... this is just because the scripts from the initramfs do not expect to have a PATH without the sbin directories and because dropbear is not setting the PATH appropriately for the root user. I'm thus suggesting to use the attached patch to fix this misbehaviour (I did not test it, but it's easy enough). It might seem anecdotic but multiple Kali users have been bitten by this. From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903403
author Raphael Hertzog <hertzog@debian.org>
date Mon, 09 Jul 2018 16:27:53 +0200
parents 1b9e69c058d2
children
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Base64 vectors.  These are the base64 encodings of the strings 00,01,02...NN-1

 0: 
 1: AA==
 2: AAE=
 3: AAEC
 4: AAECAw==
 5: AAECAwQ=
 6: AAECAwQF
 7: AAECAwQFBg==
 8: AAECAwQFBgc=
 9: AAECAwQFBgcI
10: AAECAwQFBgcICQ==
11: AAECAwQFBgcICQo=
12: AAECAwQFBgcICQoL
13: AAECAwQFBgcICQoLDA==
14: AAECAwQFBgcICQoLDA0=
15: AAECAwQFBgcICQoLDA0O
16: AAECAwQFBgcICQoLDA0ODw==
17: AAECAwQFBgcICQoLDA0ODxA=
18: AAECAwQFBgcICQoLDA0ODxAR
19: AAECAwQFBgcICQoLDA0ODxAREg==
20: AAECAwQFBgcICQoLDA0ODxAREhM=
21: AAECAwQFBgcICQoLDA0ODxAREhMU
22: AAECAwQFBgcICQoLDA0ODxAREhMUFQ==
23: AAECAwQFBgcICQoLDA0ODxAREhMUFRY=
24: AAECAwQFBgcICQoLDA0ODxAREhMUFRYX
25: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGA==
26: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBk=
27: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBka
28: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGw==
29: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxw=
30: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwd
31: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHg==
32: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=