Added Native Client reference.
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|Notes about Python Security.
== tav's jail ==
* Remove evil attributes like frame.f_globals or object.__subclasses__
* Remove evil builtins like compile(), import() or reload()
== Zope security ==
* Object proxies
== Taint mode ==
Nicole King (cats-muvva.net) wrote a taint mode for CPython 3.0: [[http://www.cats-muvva.net/software/|Python Taint Management]].
* amaury: ''The patch is indeed huge!''
* fijall: ''it seems that every function that returns a PyObject must be modified''
* fijall: ''need to patch (...) all places that might modify anything. (All side effects)''
=> ncoghlan: ''PyPy is still a *much* better platform for that kind of experimentation than CPython''
See also the presentation: [[http://us.pycon.org/common/talkdata/PyCon2007/062/PyCon_2007.pdf|Securing Python: Controling the abilities of the interpreter]], PyCon US 2007, Brett Cannon and Eric Wohlstadter
Related issue: [[http://bugs.python.org/issue500698|Taint a la Perl?]].
== Python Security Response Team ==
* Brett Cannon
Email: security AT python.org
== Controlling Access to Resources Within The Python Interpreter ==
* URL: [[http://sayspy.blogspot.com/2007/04/python-security-paper-online.html|Python security paper online]]
* Paper: [[http://www.cs.ubc.ca/~drifty/papers/python_security.pdf|Controlling Access to Resources Within The Python Interpreter]], Brett Cannon and Eric Wohlstadter, University of British Columbia
== Sandboxing ==
* PyPy project: [[http://codespeak.net/pypy/dist/pypy/doc/sandbox.html|PyPy's sandboxing features]].
* [[How can I run an untrusted Python script safely (i.e. Sandbox)]]
* [[http://mail.python.org/pipermail/python-dev/2009-June/090038.html|CPython in the web browser under Native Client]]
== Unsafe modules ==
* os.kill(), os.chown(), os.unlink(), ...
* imageop: many bugs
* [[http://bugs.python.org/issue1179|CVE-2007-4965: Integer overflow in imageop module]] (2007-09 .. 2008-08)
* [[http://bugs.python.org/issue4317|Buffer overflow in imageop module]] (rgb2rgb8): fixed in Python 2.6.1 and Python 3.0
== Restricted ==
* Deprecated (disabled?) since Python 2.3
== Fuzzing ==
Victor Stinner wrote a fuzzer called [[http://fusil.hachoir.org/trac/|Fusil]] to test Python. It already helped to fix many bugs. fusil-python works on Python 2.4 .. 3.0.
Fusil was also used on PyPy ([[http://morepypy.blogspot.com/2008/07/finding-bugs-in-pypy-with-fuz.html|Finding Bugs in PyPy with a Fuzzer]]).
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