BugTraq
rssh security announcement May 08 2012 05:24PM
Derek Martin (code pizzashack org) (2 replies)
rssh is a shell for restricting SSH access to a machine to only scp,
sftp, or a small set of similar applications.

http://www.pizzashack.org/rssh/

Henrik Erkkonen has discovered that, through clever manipulation of
environment variables on the ssh command line, it is possible to
circumvent rssh. As far as I can tell, there is no way to effect a
root compromise, except of course if the root account is the one
you're attempting to protect with rssh...

This project is old, and I have no interest in continuing to maintain
it. I looked for easy solutions to the problem, but in discussing
them with Henrik, none which we found satisfactorily address the
problem. Fixing this properly will require more work than I want to
put into it.

Note in particular that ensuring that the AcceptEnv sshd configuration
option need not be turned on for this exploit to work.

--
Derek D. Martin
http://www.pizzashack.org/
GPG Key ID: 0x81CFE75D

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[ reply ]
Re: rssh security announcement May 15 2012 03:46PM
Derek Martin (code pizzashack org) (1 replies)
Re: rssh security announcement Jun 06 2012 06:50PM
Derek Martin (code pizzashack org)
Re: rssh security announcement May 08 2012 06:14PM
Derek Martin (code pizzashack org) (1 replies)
Re: rssh security announcement Nov 27 2012 11:59PM
Derek Martin (code pizzashack org) (2 replies)
Re: rssh security announcement Nov 28 2012 01:11PM
Nico Kadel-Garcia (nkadel gmail com) (1 replies)
Re: rssh security announcement Nov 28 2012 08:19PM
Russ Allbery (rra stanford edu)
Re: rssh security announcement Nov 28 2012 12:09AM
Russ Allbery (rra stanford edu)


 

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