Date: Fri, 09 Jun 2017 06:18:27 -0400 From: Mimi Zohar <zohar@...ux.vnet.ibm.com> To: Matt Brown <matt@...tt.com>, Kees Cook <keescook@...omium.org> Cc: James Morris <james.l.morris@...cle.com>, "Serge E. Hallyn" <serge@...lyn.com>, LKML <linux-kernel@...r.kernel.org>, linux-security-module <linux-security-module@...r.kernel.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com> Subject: Re: [PATCH v2 1/1] Add Trusted Path Execution as a stackable LSM On Thu, 2017-06-08 at 23:50 -0400, Matt Brown wrote: > >> > >> * Issues: > >> * Can be bypassed by interpreted languages such as python. You can run > >> malicious code by doing: python -c 'evil code' > > > > What's the recommendation for people interested in using TPE but > > having interpreters installed? > > > > If you don't need a given interpreter installed, uninstall it. While > this is common sense system hardening it especially would make a > difference under the TPE threat model. > > I don't have a knock down answer for this. Interpreters are a hard > problem for TPE. You might be interested in the minor LSM named "shebang", that I posted as a proof of concept back in January, which restricts the python interactive prompt/interpreter, but allows the scripts themselves to be executed. Mimi
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