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Re: [Jailkit-dev] more jk_jailuser bugs
From: |
Stephen Tallowitz |
Subject: |
Re: [Jailkit-dev] more jk_jailuser bugs |
Date: |
Mon, 14 Nov 2005 23:50:50 +0100 |
> saves me a lot of work (and thus more time for the parallel init program
> I'm writing :) )
You're not by any chance involved in
http://initng.thinktux.net/index.php/Main_Page, which has received a huge
interest in the gentoo community? Didn't see your name there.
> opt 1 and then tell the user to move the files him/herself.. hmm I'm now
> wondering what the problems of system('mv source jail/source') are.. do
> you have a clear view on the possible problems?
I think the security problem stems from the fact that builtin
commands/functions of a programming language are usually linked against some
system libraries. So any modifying a system library or the progamming language
executables and libraries to gain root access or install a rootkit can be
watched by the popular checksum watchers (tripwire et al). Executing a shell
command basically leaves open the possibility of anyone putting in an alias
such as mv="rm -rf /" or mv="install-my-rootkit". And aliases are probably not
what checksum-programms look out for. There are probably many ways to inject
such an alias to the root-user, there need only be one incorrectly configured
service or directory on a computer.
jk_jailuser is always executed as root, so being just that little bit more
security conscious might not be a bad idea.
- [Jailkit-dev] jk_jailuser bug fixed, Olivier Sessink, 2005/11/10
- Re: [Jailkit-dev] more jk_jailuser bugs, Stephen Tallowitz, 2005/11/10
- Re: [Jailkit-dev] more jk_jailuser bugs, Stephen Tallowitz, 2005/11/10
- Re: [Jailkit-dev] more jk_jailuser bugs, Olivier Sessink, 2005/11/11
- Re: [Jailkit-dev] more jk_jailuser bugs, Olivier Sessink, 2005/11/13
- Re: [Jailkit-dev] more jk_jailuser bugs, Stephen Tallowitz, 2005/11/14
- Re: [Jailkit-dev] more jk_jailuser bugs, Olivier Sessink, 2005/11/14
- Re: [Jailkit-dev] more jk_jailuser bugs,
Stephen Tallowitz <=
- Re: [Jailkit-dev] more jk_jailuser bugs, Olivier Sessink, 2005/11/14