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Unmount Any Filesystem Using fusermount

Unmount Any Filesystem Using fusermount
Posted Nov 3, 2010
Authored by halfdog | Site halfdog.net

At least on ubuntu lucid, the fusermount tool contains a timerace mounting a user filesystem and updating mtab, thus mtab entries with arbitrary paths can be created. Crafted mtab entries can then be used to unmount live parts of the filesystem. Proof of concept code included.

tags | exploit, arbitrary, proof of concept
systems | linux, ubuntu
SHA-256 | 042dadda335de672c21630853a0e117fb84f2a7885909c01be5c0e5ea8732cd2
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