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Chw00t: Breaking Unices' chroot solutions

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Chw00t: Breaking Unices' chroot solutions
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5
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29
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CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Chroot is not a security solution, still lots of people use it as it was one. Based on chroot, Jail was introduced in FreeBSD, Containers — in Solaris, and LXC — on Linux. However, Unices implemented chroot in different ways. Some of the implementations are easy to break, some of them are just partly breakable but one thing is sure: you would be surprised how many. The presentation focuses on escape techniques and the tool called chw00t, a small handy one that makes it easy to pop shells out of the chroot environment.