usbsas is a free and open source (GPLv3) tool and framework for securely reading untrusted USB mass storage devices.
Following the concept of defense in depth and the principle of least privilege, usbsas's goal is to reduce the attack surface of the USB stack. To achieve this, most of the USB related tasks (parsing USB packets, SCSI commands, file systems etc.) usually executed in (privileged) kernel space has been moved to user space and separated in different processes (microkernel style), each being executed in its own restricted secure computing mode.
The main purpose of this project is to be deployed as a kiosk / sheep dip station to securely transfer files from an untrusted USB device to a trusted one.
It works on GNU/Linux and is written in Rust.
usbsas can:
uas
, usb_storage
and the file system ones). Supported file systems are FAT
, exFat
, ext4
, NTFS
and ISO9660
FAT
, exFAT
and NTFS
Applications built on top of usbsas:
$ cargo doc
Any contribution is welcome, be it code, bug report, packaging, documentation or translation.
Dependencies included in this project:
ntfs3g
is GPLv2 (see ntfs3g/src/ntfs-3g/COPYING).FatFs
has a custom BSD-style license (see ff/src/ff/LICENSE.txt)fontawesome
is CC BY 4.0 (icons), SIL OFL 1.1 (fonts) and MIT (code) (see client/web/static/fontawesome/LICENSE.txt)bootstrap
is MIT (see client/web/static/bs/LICENSE)Lato
font is SIL OFL 1.1 (see client/web/static/fonts/LICENSE.txt)usbsas is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
usbsas is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with usbsas. If not, see the gnu.org web site.