Mercurial > dropbear
annotate fuzz/fuzzer-preauth.c @ 1930:299f4f19ba19
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> |
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date | Mon, 09 Jul 2018 16:27:53 +0200 |
parents | 97ad26e397a5 |
children |
rev | line source |
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1348 | 1 #include "fuzz.h" |
2 | |
3 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { | |
1777
97ad26e397a5
Add server postauth fuzzer, wrap connect_remote()
Matt Johnston <matt@ucc.asn.au>
parents:
1756
diff
changeset
|
4 return fuzz_run_server(Data, Size, 0, 0); |
1456
a90fdd2d2ed8
add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents:
1386
diff
changeset
|
5 } |
1377
d4cc85e6c569
rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents:
1364
diff
changeset
|
6 |