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04

Almighty root

by Bastian Blank — last modified Apr 04, 2009 07:44 PM
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I was asked to take a look at a machine where aptitude don't even want to do the upgrade to etch. A first inspection shows some weird repositories in the source.list file and many daemons noone ever should use on that machine. I was able to do the upgrade with apt-get then.

After some time I got asked over modifications in /etc/exports. It basically included the following content:[1]

/     *(rw,async,no_root_squash)
/home *(rw,async,no_root_squash,nohide)
/usr  *(rw,async,no_root_squash,nohide)
/var  *(rw,async,no_root_squash,nohide)
[1]For those who don't speak NFS: This exports the specified filesystems (/, /home, /usr and /var) to everyone, and accepts whatever the client system say.

The machine was taked out of service immediately. We'll have no chance to answer the question whether this was silliness or intend.

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