├── LICENSE ├── Makefile ├── README.md ├── configure-sudo-prompt ├── debian ├── changelog ├── compat ├── control ├── copyright ├── install ├── postinst ├── rules └── source │ └── format ├── default └── vms │ ├── @tags │ ├── ibrowse.rc │ ├── ibrowse.whitelist │ ├── ibrowse │ │ └── rw │ │ │ └── home │ │ │ └── user │ │ │ └── .mozilla │ │ │ └── firefox │ │ │ ├── profile.default │ │ │ └── user.js │ │ │ └── profiles.ini │ ├── network.whitelist │ ├── noqbackup.rc │ ├── qhome.rc │ └── wiperw.rc │ └── sys-net.whitelist ├── install ├── vm-boot-protect.service └── vm-boot-protect.sh /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | VERSION := $(shell cat version) 2 | 3 | install: install-vm 4 | 5 | install-vm: 6 | bash ./install 7 | bash ./configure-sudo-prompt --force 8 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## Qubes VM hardening 2 | 3 | Leverage Qubes template non-persistence to fend off malware at VM startup: Lock-down, quarantine and check contents of /rw private storage that affect the execution environment. 4 | 5 | 6 | ### vm-boot-protect.service 7 | * Acts at VM startup before private volume /rw mounts 8 | * User: Protect /home desktop & shell startup executables 9 | * Root: Quarantine all /rw configs & scripts, with whitelisting 10 | * Organize configurations with named tags 11 | * Deploy trusted custom files to /rw on each boot 12 | * SHA256 hash checking against unwanted changes 13 | * Provides rescue shell on error or request 14 | * Works with template-based AppVMs, sys-net and sys-vpn 15 | 16 | 17 | ### Installing 18 | 19 | ``` 20 | 1. In dom0, enter the following commands to enable `sudo` prompts: 21 | 22 | sudo su - 23 | echo "/usr/bin/echo 1" >/etc/qubes-rpc/qubes.VMAuth 24 | chmod +x /etc/qubes-rpc/qubes.VMAuth 25 | echo "@anyvm dom0 ask,default_target=dom0" >/etc/qubes-rpc/policy/qubes.VMAuth 26 | 27 | 2. In a template VM, install and configure 28 | 29 | cd Qubes-VM-hardening 30 | sudo bash install 31 | sudo bash configure-sudo-prompt 32 | 33 | As an alternative, you can skip _'configure-sudo-prompt'_ and Step 1 and instead uninstall the `qubes-core-agent-passwordless-root` package from the template. After doing this, you will have to use `qvm-run -u root` from dom0 to run any VM commands as root. 34 | 35 | 3. Activate by specifying one of the following Qubes services for your VM(s)... 36 | - `vm-boot-protect` - Protects executables/scripts within /home/user and may be used with wide array of Qubes VMs including standalone, appVMs, netVMs, Whonix, etc. 37 | - `vm-boot-protect-root` - Protects /home/user as above, automatic /rw executable deactivation, whitelisting, checksumming, deployment. Works with appVMs, netVMs, etc. that are _template-based_. 38 | ``` 39 | 40 | CAUTION: The -root option by default **removes** prior copies of /rw/config, /rw/usrlocal and /rw/bind-dirs. This can delete data! 41 | 42 | 43 | --- 44 | 45 | ### Usage 46 | 47 | Operation is automatic and will result in either a normal boot process with full access to the private volume at /rw, or a rescue service mode providing an xterm shell and the private volume quarantined at /dev/badxvdb. 48 | 49 | At the `vm-boot-protect` level, certain executable files in /home will be made immutable so PATH and `alias` cannot be used to hijack commands like `su` and `sudo`, nor can impostor apps autostart whenever a VM starts. This can be added to virtually any Debian or Fedora VM and prevents unprivileged attacks from gaining persistence at startup. 50 | 51 | At the `vm-boot-protect-root` level, the $privdirs paths will be renamed as backups, effectively removing them from the VM startup. Then whitelisting, hash/checksumming and deployment are done (if configured). This protects VM startup from attacks that had previously achieved privilege escalation. 52 | 53 | The special `vm-boot-protect-cli` level unconditionally runs an xterm rescue shell. 54 | 55 | 56 | ### Configuration 57 | 58 | Files can be added to /etc/default/vms in the template to configure the following `vm-boot-protect-root` features... 59 | 60 | **Hashes/Checksums** are checked in ../vms/vms.all.SHA and ../vms/$vmname.SHA files. File paths contained in them must be absolute, and references to '/home' must be prefixed with '/rw/'. Hashes in $vmname.SHA will override hashes specified for the same paths in vms.all.SHA. See also man page for `sha256sum -c`. 61 | 62 | **Whitelists** are checked in ../vms/vms.all.whitelist and ../vms/$vmname.whitelist files, and file paths contained in them must start with `/rw/`. A default is provided in ..vms/sys-net.whitelist to preserve Network Manager connections and sleep module list in sys-net. 63 | 64 | **Deployment** files are copied _recursively_ from ../vms/vms.all/rw/ and ../vms/$vmname/rw/ dirs. Example is to place the .bashrc file in /etc/default/vms/vms.all/rw/home/user/.bashrc for deployment to /rw/home/user/.bashrc. Once copying is complete, 65 | the /etc/defaults/vms folder is deleted from the running VM (this has no effect on the original in the template). 66 | 67 | **rc files** are sh script fragments sourced from ../vms/vms.all.rc and ../vms/$vmname.rc. They run near the beginning of the vm-boot-protect service before mounting /rw, and can be used to override variable definitions like `privdirs` as well as the `vm_boot_finish` function which runs near the end before dismount. Another use for rc files is to run threat detection tools such as antivirus. 68 | 69 | **Tags:** Any of the above configs may be defined as tags so that you are not limited to specifying them for either all VMs or specifically-named VMs. Simply configure them as you would acccording to the above directions, but place the files under the '@tags' subdir instead. For example '/etc/default/vms/@tags/special.whitelist' defines a whitelist for the tag 'special'. A tag can be activated for one or more VMs by adding a Qubes service prefixed with `vm-boot-tag-` (i.e. vm-boot-tag-special) to the VMs. Also, multiple tags may be activated for a VM. 70 | 71 | ### Where to use: Basic examples 72 | 73 | After installing into a template, simply enable `vm-boot-protect-root` service without configuration. Recommended for the following types of VMs: 74 | * Service VMs: sys-usb and sys-net. 75 | * App VMs: untrusted, personal, banking, vault, etc. This assumes using regular Linux apps without tailored Qubes-specific settings in /rw such as *Firefox, Chromium, Thunderbird, KeePassX, office apps, media playback & editing*, etc. For these and many more, no configuration should be necessary. 76 | 77 | Examples where `vm-boot-protect-root` requires configuration: sys-vpn (see Notes), Martus and Whonix (needs testing). Note that VMs sys-vpn and sys-firewall are fairly low-risk VMs so there may not be a compelling reason to use the service with them. 78 | 79 | Examples where -root should *not* be enabled: 80 | * DispVMs. Sensible option is to enable sudo security for DispVM templates; service can be installed into template and left unused. 81 | * Whonix VMs. Plain `vm-boot-protect` is best used until Whonix persistence files can be mapped. 82 | * Standalone VMs. Plain `vm-boot-protect` makes more sense for these. 83 | * Non-Linux VMs (currently unsupported for any mode) 84 | 85 | ### Example tags 86 | 87 | Some useful configurations have been supplied in /etc/default/vms: 88 | 89 | * vm-boot-tag-network: Contains a whitelist for Network Manager connections and the module blacklist which is often used with network interfaces in Qubes. By default, this config also activates for any VM named 'sys-net'. 90 | * vm-boot-tag-qhome: Quarantines /home in addition to the /rw system dirs. Useful for 'sys-usb' and DispVM-like functionality. 91 | * vm-boot-tag-noqbackup: Deletes all quarantined files that are not whitelisted. 92 | * vm-boot-tag-ibrowse: Preserves Firefox bookmarks while quarantining the /home folder. [Currently](https://github.com/tasket/Qubes-VM-hardening/issues/39) works with Firefox ESR. See Notes below. 93 | * vm-boot-wiperw: Completely wipe and reformat the /rw partition. 94 | 95 | 96 | ### Scope and Limitations 97 | 98 | The *vm-boot-protect* concept enhances the guest operating system's own defenses by using the *root volume non-persistence* provided by the Qubes template system; thus a relatively pristine startup state may be achieved if the *private* volume is brought online in a controlled manner. Protecting the init/autostart files should result in Qubes template-based VMs that boot 'cleanly' with much less chance of being affected by malware initially. Even if malware persists in a VM, it should be possible to run other apps and terminals without interference if the malware has not escalated to root (admittedly, a big 'if'). 99 | 100 | Conversely, attacks which damage/exploit the Ext4 private filesystem itself or quickly re-exploit network vulnerabilities could conceivably still persist at startup. Further, repeated running of complex apps, games, and programming environments may reactivate malware; this is because of the complexity of the formats and settings handled by such apps. Therefore, setting apps to autostart can diminish protection of the startup environment. 101 | 102 | Note that as system and app vulnerabilities are patched via system updates, malware that used those vulns to gain entry may cease to function without the kind of loopholes that *vm-boot-protect* closes. 103 | 104 | Efficient template re-use is another aspect of using *vm-boot-protect-root* features, since a single template can be customized for various roles. However, note that some customizations may not be appropriate to run during VM startup. 105 | 106 | ### Notes 107 | 108 | * The /rw/home directory can be added to `privdirs` so it is quarantined much like the other /rw dirs. The easiest way to configure this is to define `privdirs_add=/rw/home` in an rc file; see 'qhome.rc' for an exmaple. 109 | 110 | * The ibrowse tag works with Firefox versions up to 66 and uses a generic profile named 'profile.default'. If you wish to carry over existing bookmarks for use with ibrowse, rename the current profile folder in '.mozilla/firefox' to 'profile.default' before enabling the ibrowse tag. 111 | 112 | * A bug in v0.8.4 will erase anything in '/etc/default/vms' when booting into the template. For proper 113 | future operation with sys-net or other VMs you may have customized in that path, updating Qubes-VM-hardening 114 | to the latest version (using the install script) is recommended, along with restoring any custom files 115 | in '/etc/default/vms'. Thanks to Daniel Moerner for submitting the patch! 116 | 117 | * All the user-writable startup files in /home should be protected by the immutable flag; See issue #9 if you notice an omission or other problem. An extra step of disabling the flag using `sudo chattr -i` is required whenever the user wants to modify these startup files. 118 | 119 | * The sys-net VM should work 'out of the box' with the vm-boot-protect-root service via the included whitelist file. Additional network VMs may require configuration, such as `cp sys-net.whitelist sys-net2.whitelist`. 120 | 121 | * Using the -root service with a [VPN VM](https://github.com/tasket/Qubes-vpn-support) requires manual configuration in the template and can be approached different ways: Whitelist (optionally with SHA) can be made for the appropriate files. Alternately, all VPN configs can be added under /etc/default/vms/vmname/rw so they'll be automatically deployed. 122 | 123 | * Currently the service cannot seamlessly handle 'first boot' when the private volume must be initialized. If you enabled the service on a VM before its first startup, on first start the shell will display a notice telling you to restart the VM. Subsequent starts will proceed normally. 124 | 125 | * The service can be removed from the system with `cd Qubes-VM-hardening; sudo bash install --uninstall` 126 | 127 | ### Links 128 | 129 | - Qubes VM sudo [page](https://www.qubes-os.org/doc/vm-sudo/#replacing-password-less-root-access-with-dom0-user-prompt) 130 | 131 | ## Releases 132 | - v0.9.4 Revise dom0 instructions for sudo prompt 133 | - v0.9.3 Protect against suid and device nodes 134 | - v0.9.2 Fix vm-boot-protect mode 135 | - v0.9.1 Optimized, fix rc order, new "wiperw" tag 136 | - v0.9.0 Add tags and rc files, protect more home scripts, reinitialize home 137 | - v0.8.5 Fix template detection, /etc/default/vms erasure 138 | - v0.8.4 Add protection to /home/user/.config/systemd 139 | - v0.8.3 Fix for install script copying to /etc/default/vms 140 | - v0.8.2 Working rescue shell. Add sys-net whitelist, sudo config, fixes. 141 | - v0.8.0 Adds protection to /rw, file SHA checksums, whitelists, deployment 142 | - v0.2.0 Protects /home/user files and dirs 143 | -------------------------------------------------------------------------------- /configure-sudo-prompt: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # From https://github.com/tasket/Qubes-VM-hardening 3 | # installer version 0.9.4 4 | 5 | set -e 6 | [ `id -u` -eq 0 ] || exit 7 | 8 | 9 | if [ ! -e /etc/sudoers.d/qubes ]; then 10 | echo "The 'qubes-core-agent-passwordless-root' package does not appear" 11 | echo "to be present or configured; sudo autoconfiguration skipped." 12 | exit 0 13 | fi 14 | 15 | if [ ! -e /etc/debian_version ]; then 16 | echo "Debian-based template required for sudo autoconfiguration. 17 | See https://qubes-os.org/doc/vm-sudo for manual instructions." 18 | exit 1 19 | fi 20 | 21 | 22 | if [ "$1" = "--force" ]; then 23 | force=1 24 | else 25 | force=0 26 | fi 27 | 28 | if grep -q '^auth .* dom0\squbes\.VMAuth' /etc/pam.d/common-auth && [ $force = 0 ]; then 29 | echo "System appears already configured for sudo prompts." 30 | echo "To force re-configuration run 'configure-sudo-prompt --force'." 31 | exit 0 32 | fi 33 | 34 | 35 | echo -e "\n--+ Enable yes/no authentication prompt for sudo +-- 36 | Warning: Before opting for this change a backup or clone 37 | should me made of this template!" 38 | if [ $force = 0 ]; then 39 | read -p "Configure sudo authentication prompt now? (y/n): " answer 40 | fi 41 | if [[ $answer == @(y|Y) ]] || [ $force = 1 ]; then 42 | 43 | mv -fb /etc/pam.d/common-auth /etc/pam.d/common-auth~ 44 | cat >/etc/pam.d/common-auth <<_EOF 45 | auth [success=1 default=ignore] pam_exec.so seteuid /usr/lib/qubes/qrexec-client-vm dom0 qubes.VMAuth /bin/grep -q ^1$ 46 | auth requisite pam_deny.so 47 | auth required pam_permit.so 48 | _EOF 49 | 50 | 51 | # sed -i 's/^user ALL=(ALL) NOPASSWD: ALL/user ALL=(ALL) ALL/' /etc/sudoers.d/qubes 52 | sed -i 's/^user/#user/' /etc/sudoers.d/qubes 53 | echo 'user ALL=(ALL) ALL' >>/etc/sudoers.d/qubes 54 | 55 | sed -ri 's/^(auth[[:space:]]sufficient[[:space:]]pam_permit.so)/#\1/' /etc/pam.d/su 56 | 57 | mv -f /etc/polkit-1/rules.d/00-qubes-allow-all.rules \ 58 | /etc/polkit-1/rulesd_00-qubes-allow-all.rules.bak || true 59 | mv -f /etc/polkit-1/localauthority/50-local.d/qubes-allow-all.pkla \ 60 | /etc/polkit-1/localauthority_50-locald_qubes-allow-all.pkla.bak || true 61 | 62 | echo "Done." 63 | 64 | echo ' 65 | Next.... Enable auth prompts in dom0 with the following commands: 66 | [user@dom0 ~]$ sudo su - 67 | [root@dom0 /]# echo "/usr/bin/echo 1" >/etc/qubes-rpc/qubes.VMAuth 68 | [root@dom0 /]# chmod +x /etc/qubes-rpc/qubes.VMAuth 69 | [root@dom0 /]# echo "@anyvm dom0 ask,default_target=dom0" \ 70 | >/etc/qubes-rpc/policy/qubes.VMAuth 71 | 72 | ' 73 | fi 74 | -------------------------------------------------------------------------------- /debian/changelog: -------------------------------------------------------------------------------- 1 | qubes-vm-hardening (0.9.3-1) unstable; urgency=medium 2 | 3 | * Initial release 4 | 5 | -- Christopher Laprise Mon, 2 Sep 2018 08:01:15 -0400 6 | -------------------------------------------------------------------------------- /debian/compat: -------------------------------------------------------------------------------- 1 | 10 2 | -------------------------------------------------------------------------------- /debian/control: -------------------------------------------------------------------------------- 1 | Source: Qubes-VM-hardening 2 | Section: admin 3 | Priority: optional 4 | Maintainer: Christopher Laprise 5 | Build-Depends: debhelper (>= 10) 6 | Standards-Version: 4.1.2 7 | Homepage: https://www.qubes-os.org 8 | 9 | Package: qubes-vm-hardening 10 | Architecture: all 11 | Depends: ${misc:Depends} qubes-core-agent 12 | Description: Prevent malware persistence in Qubes virtual machines. 13 | Reconfigures Qubes VM templates to block casual sudo access, 14 | protects user startup scripts, and includes a service that can 15 | quarantine, whitelist and check file hashes at startup before 16 | the /rw volume comes online. 17 | 18 | See https://www.github.com/tasket/Qubes-VM-hardening for more info. 19 | -------------------------------------------------------------------------------- /debian/copyright: -------------------------------------------------------------------------------- 1 | Files: debian/* 2 | Copyright: 2018-2019 Christopher Laprise 3 | License: GPL-3 4 | This package is free software; you can redistribute it and/or modify 5 | it under the terms of the GNU General Public License as published by 6 | the Free Software Foundation; either version 3 of the License, or 7 | (at your option) any later version. 8 | . 9 | This package is distributed in the hope that it will be useful, 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | GNU General Public License for more details. 13 | . 14 | You should have received a copy of the GNU General Public License 15 | along with this program. If not, see 16 | . 17 | On Debian systems, the complete text of the GNU General 18 | Public License version 3 can be found in "/usr/share/common-licenses/GPL-3". 19 | -------------------------------------------------------------------------------- /debian/install: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /debian/postinst: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # postinst script for qubes-tunnel 3 | # 4 | # see: dh_installdeb(1) 5 | 6 | 7 | 8 | ### TODO: 9 | ### Fix postinst and install files in 'debian' folder. 10 | 11 | 12 | 13 | set -e 14 | 15 | # summary of how this script can be called: 16 | # * `configure' 17 | # * `abort-upgrade' 18 | # * `abort-remove' `in-favour' 19 | # 20 | # * `abort-remove' 21 | # * `abort-deconfigure' `in-favour' 22 | # `removing' 23 | # 24 | # for details, see https://www.debian.org/doc/debian-policy/ or 25 | # the debian-policy package 26 | 27 | 28 | case "$1" in 29 | configure) 30 | systemctl daemon-reload 31 | systemctl enable vm-boot-protect.service 32 | ;; 33 | 34 | abort-upgrade|abort-remove|abort-deconfigure) 35 | ;; 36 | 37 | *) 38 | echo "postinst called with unknown argument \`$1'" >&2 39 | exit 1 40 | ;; 41 | esac 42 | 43 | # dh_installdeb will replace this with shell code automatically 44 | # generated by other debhelper scripts. 45 | 46 | #DEBHELPER# 47 | 48 | exit 0 49 | -------------------------------------------------------------------------------- /debian/rules: -------------------------------------------------------------------------------- 1 | #!/usr/bin/make -f 2 | # See debhelper(7) (uncomment to enable) 3 | # output every command that modifies files on the build system. 4 | #export DH_VERBOSE = 1 5 | 6 | 7 | # see FEATURE AREAS in dpkg-buildflags(1) 8 | #export DEB_BUILD_MAINT_OPTIONS = hardening=+all 9 | 10 | # see ENVIRONMENT in dpkg-buildflags(1) 11 | # package maintainers to append CFLAGS 12 | #export DEB_CFLAGS_MAINT_APPEND = -Wall -pedantic 13 | # package maintainers to append LDFLAGS 14 | #export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed 15 | 16 | 17 | %: 18 | dh $@ 19 | 20 | 21 | # dh_make generated override targets 22 | # This is example for Cmake (See https://bugs.debian.org/641051 ) 23 | #override_dh_auto_configure: 24 | # dh_auto_configure -- # -DCMAKE_LIBRARY_PATH=$(DEB_HOST_MULTIARCH) 25 | 26 | -------------------------------------------------------------------------------- /debian/source/format: -------------------------------------------------------------------------------- 1 | 3.0 (quilt) 2 | -------------------------------------------------------------------------------- /default/vms/@tags/ibrowse.rc: -------------------------------------------------------------------------------- 1 | # Browser-focused config that saves only bookmarks, starts with /home quarantine 2 | privdirs_add="/rw/home" 3 | -------------------------------------------------------------------------------- /default/vms/@tags/ibrowse.whitelist: -------------------------------------------------------------------------------- 1 | /rw/home/user/.mozilla/firefox/profile.default/places.sqlite 2 | /rw/home/user/.mozilla/firefox/profile.default/places.sqlite-shm 3 | /rw/home/user/.mozilla/firefox/profile.default/places.sqlite-wal 4 | -------------------------------------------------------------------------------- /default/vms/@tags/ibrowse/rw/home/user/.mozilla/firefox/profile.default/user.js: -------------------------------------------------------------------------------- 1 | // Remove history from places.sqlite 2 | user_pref("privacy.history.custom",true); 3 | user_pref("privacy.sanitize.sanitizeOnShutdown",true); 4 | user_pref("privacy.clearOnShutdown.downloads",true); 5 | user_pref("privacy.clearOnShutdown.history",true); 6 | user_pref("browser.search.suggest.enabled",false); 7 | -------------------------------------------------------------------------------- /default/vms/@tags/ibrowse/rw/home/user/.mozilla/firefox/profiles.ini: -------------------------------------------------------------------------------- 1 | [General] 2 | StartWithLastProfile=1 3 | 4 | [Profile0] 5 | Name=default 6 | IsRelative=1 7 | Path=profile.default 8 | Default=1 9 | 10 | -------------------------------------------------------------------------------- /default/vms/@tags/network.whitelist: -------------------------------------------------------------------------------- 1 | /rw/config/NM-system-connections/ 2 | /rw/config/suspend-module-blacklist 3 | -------------------------------------------------------------------------------- /default/vms/@tags/noqbackup.rc: -------------------------------------------------------------------------------- 1 | # Removes any files that were quarantined under /rw/vm-boot-protect/ 2 | save_backup=0 3 | -------------------------------------------------------------------------------- /default/vms/@tags/qhome.rc: -------------------------------------------------------------------------------- 1 | # Quarantine entire /home directory 2 | privdirs_add="/rw/home" 3 | -------------------------------------------------------------------------------- /default/vms/@tags/wiperw.rc: -------------------------------------------------------------------------------- 1 | # Completely wipes private volume contents 2 | 3 | blkdiscard $dev 4 | mkfs.ext4 $dev 5 | -------------------------------------------------------------------------------- /default/vms/sys-net.whitelist: -------------------------------------------------------------------------------- 1 | @tags/network.whitelist -------------------------------------------------------------------------------- /install: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # From https://github.com/tasket/Qubes-VM-hardening 3 | # installer version 0.9.3 4 | 5 | set -e 6 | [ `id -u` -eq 0 ] || exit 7 | 8 | if [ "$1" = "--uninstall" ]; then 9 | echo "Removing vm-boot-protect.service..." 10 | echo "Warning: This will remove any custom files added to /etc/default/vms!" 11 | read -p "Proceed [y/N]? " ans 12 | if [[ $ans == @(Y|y) ]]; then 13 | systemctl disable vm-boot-protect.service 14 | rm -r /lib/systemd/system/vm-boot-protect.service /usr/lib/qubes/init/vm-boot-protect.sh /etc/default/vms 15 | systemctl daemon-reload 16 | echo "Done." 17 | else 18 | echo "Aborted." 19 | fi 20 | exit 0 21 | fi 22 | 23 | 24 | echo "Installing vm-boot-protect.service..." 25 | cp vm-boot-protect.sh /usr/lib/qubes/init 26 | chmod +x /usr/lib/qubes/init/vm-boot-protect.sh 27 | cp vm-boot-protect.service /lib/systemd/system 28 | systemctl daemon-reload 29 | systemctl enable vm-boot-protect.service 30 | 31 | echo "Adding defaults in /etc/default/vms..." 32 | mkdir -p /etc/default/vms 33 | # Careful... ownership & mode are not preserved here! 34 | cp -riv default/vms/* /etc/default/vms 35 | 36 | echo "Adding nosuid,nodev options to /etc/fstab..." 37 | cp /etc/fstab /etc/fstab.bak 38 | awk '($1~"^/rw/" || $2~"^/rw$") && ($4!~"nosuid" || $4!~"nodev") {$4=$4",nosuid,nodev"}1' \ 39 | /etc/fstab.bak >/etc/fstab 40 | 41 | 42 | echo -e "\nvm-boot-protect installed!\n" 43 | 44 | #bash ./configure-sudo-prompt 45 | exit 0 46 | 47 | -------------------------------------------------------------------------------- /vm-boot-protect.service: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description=Protect Qubes VM execution environment at startup 3 | Documentation=https://github.com/tasket/Qubes-VM-hardening 4 | After=qubes-sysinit.service 5 | Before=qubes-mount-dirs.service 6 | DefaultDependencies=false 7 | #OnFailure=rescue.target 8 | #OnFailureJobMode=replace-irreversibly 9 | 10 | [Service] 11 | Type=oneshot 12 | RemainAfterExit=no 13 | # privdirs must begin with /rw 14 | # Environment="privdirs=/rw/config /rw/usrlocal /rw/bind-dirs" 15 | ExecStart=/usr/lib/qubes/init/vm-boot-protect.sh 16 | Restart=no 17 | 18 | [Install] 19 | WantedBy=sysinit.target 20 | -------------------------------------------------------------------------------- /vm-boot-protect.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | ## Protect startup of Qubes VMs from /rw content ## 4 | ## https://github.com/tasket/Qubes-VM-hardening ## 5 | ## Copyright 2017-2019 Christopher Laprise ## 6 | ## tasket@protonmail.com ## 7 | 8 | # This file is part of Qubes-VM-hardening. 9 | # Qubes-VM-hardening is free software: you can redistribute it and/or modify 10 | # it under the terms of the GNU General Public License as published by 11 | # the Free Software Foundation, either version 3 of the License, or 12 | # (at your option) any later version. 13 | # 14 | # Qubes-VM-hardening is distributed in the hope that it will be useful, 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 | # GNU General Public License for more details. 18 | # 19 | # You should have received a copy of the GNU General Public License 20 | # along with Qubes-VM-hardening. If not, see . 21 | 22 | 23 | # Source Qubes library. 24 | . /usr/lib/qubes/init/functions 25 | 26 | vmname=`qubesdb-read /name` 27 | dev=/dev/xvdb 28 | rw=/mnt/rwtmp 29 | rwbak=$rw/vm-boot-protect 30 | errlog=/var/run/vm-protect-error 31 | servicedir=/var/run/qubes-service 32 | defdir=/etc/default/vms 33 | version=0.9.3 34 | 35 | # Define sh, bash, X and desktop init scripts in /home/user 36 | # to be protected 37 | chfiles=${chfiles:-".bashrc .bash_profile .bash_login .bash_logout .profile \ 38 | .pam_environment .xprofile .xinitrc .xserverrc .Xsession .xsession .xsessionrc"} 39 | chfiles_add=${chfiles_add:-""} 40 | chdirs=${chdirs:-"bin .local/bin .config/autostart .config/plasma-workspace/env \ 41 | .config/plasma-workspace/shutdown .config/autostart-scripts .config/systemd"} 42 | chdirs_add=${chdirs_add:-""} 43 | 44 | # Define dirs to apply quarantine / whitelists 45 | privdirs=${privdirs:-"/rw/config /rw/usrlocal /rw/bind-dirs"} 46 | privdirs_add=${privdirs_add:-""} 47 | save_backup=${save_backup:-1} 48 | 49 | if is_rwonly_persistent; then 50 | rwonly_pers=1 51 | else 52 | rwonly_pers=0 53 | fi 54 | 55 | 56 | # Placeholder function: Runs at end 57 | vm_boot_finish() { return; } 58 | 59 | 60 | # Remount fs as read-write 61 | remount_rw() { 62 | # Begin write operations 63 | if [ -e $dev ] && mount -o remount,rw,nosuid,nodev $dev $rw ; then 64 | echo Good rw remount. 65 | else 66 | abort_startup RELOCATE "Remount failed!" 67 | fi 68 | } 69 | 70 | 71 | # Function: Make user scripts immutable. 72 | make_immutable() { 73 | echo "Making files IMMUTABLE" 74 | remount_rw 75 | #initialize_home $rw/home ifneeded 76 | cd $rw/home/user 77 | su user -c "mkdir -p $chdirs $chdirs_add; touch $chfiles $chfiles_add 2>/dev/null" 78 | chattr -R -f +i $chfiles $chfiles_add $chdirs $chdirs_add 79 | cd /root 80 | } 81 | 82 | 83 | # Start rescue shell then exit/fail 84 | abort_startup() { 85 | type="$1" 86 | msg="$2" 87 | echo "$msg" >>$errlog 88 | cat $errlog 89 | 90 | rc=1 91 | if [ $type = "RELOCATE" ]; then 92 | # quarantine private volume 93 | umount $dev 94 | mv -f $dev /dev/badxvdb 95 | truncate --size=500M /root/dev-xvdb 96 | loop=`losetup --find --show /root/dev-xvdb` 97 | mv -f $loop $dev 98 | elif [ $type = "OK" ]; then 99 | # allow normal start with private vol 100 | rc=0 101 | fi 102 | 103 | # insert status msg and run xterm 104 | cat /etc/bashrc /etc/bash.bashrc >/etc/bashrc-insert 105 | echo "echo '** VM-BOOT-PROTECT SERVICE SHELL'" >/etc/bashrc 106 | if [ $type = "RELOCATE" ]; then 107 | echo "echo '** Private volume is located at /dev/badxvdb'" >>/etc/bashrc 108 | fi 109 | echo "cat $errlog" >>/etc/bashrc 110 | echo ". /etc/bashrc-insert" >>/etc/bashrc 111 | ln -f /etc/bashrc /etc/bash.bashrc 112 | echo '/usr/bin/nohup /usr/bin/xterm /bin/bash 0<&- &>/dev/null &' \ 113 | >/etc/X11/Xsession.d/98rescue 114 | 115 | exit $rc 116 | } 117 | 118 | 119 | echo >$errlog # Clear 120 | if qsvc vm-boot-protect-cli; then 121 | abort_startup RELOCATE "CLI requested." 122 | fi 123 | 124 | 125 | # Run rc file commands if they exist 126 | if qsvc vm-boot-protect-root && [ $rwonly_pers = 1 ]; then 127 | # Get list of enabled tags from Qubes services 128 | tags=`find $servicedir -name 'vm-boot-tag-*' -type f -printf '%f\n' \ 129 | | sort | sed -E 's|^vm-boot-tag-|\@tags/|'` 130 | 131 | for rcbase in vms.all $tags $vmname; do 132 | if [ -e "$defdir/$rcbase.rc" ]; then 133 | . "$defdir/$rcbase.rc" 134 | fi 135 | done 136 | fi 137 | 138 | 139 | if qsvc vm-boot-protect || qsvc vm-boot-protect-root; then 140 | # Mount private volume in temp location 141 | mkdir -p $rw 142 | if [ -e $dev ] && mount -o ro,nosuid,nodev $dev $rw ; then 143 | echo "Good read-only mount." 144 | else 145 | echo "Mount failed." 146 | # decide if this is initial boot or a bad volume 147 | private_size_512=$(blockdev --getsz "$dev") 148 | if head -c $(( private_size_512 * 512 )) /dev/zero | diff "$dev" - >/dev/null; then 149 | touch /var/run/qubes/VM-BOOT-PROTECT-INITIALIZERW 150 | abort_startup OK "FIRST BOOT INITIALIZATION: PLEASE RESTART VM!" 151 | else 152 | abort_startup RELOCATE "Mount failed; BAD private volume!" 153 | fi 154 | fi 155 | 156 | # Begin exit if in template or standalone 157 | if [ $rwonly_pers = 0 ]; then 158 | make_immutable 159 | umount $rw 160 | fi 161 | 162 | fi 163 | # Exit if in template or standalone 164 | if [ $rwonly_pers = 0 ]; then 165 | exit 0 166 | fi 167 | 168 | 169 | # Protection measures for /rw dirs: 170 | # Activated by presence of vm-boot-protect-root Qubes service. 171 | # * Hashes in vms/vms.all.SHA and vms/$vmname.SHA files will be checked. 172 | # * Remove /rw root startup files (config, usrlocal, bind-dirs). 173 | # * Contents of vms/vms.all and vms/$vmname folders will be copied. 174 | 175 | if qsvc vm-boot-protect-root && [ $rwonly_pers = 1 ]; then 176 | 177 | # Check hashes 178 | checkcode=0 179 | for sha_base in $vmname $tags vms.all; do 180 | if [ -e "$defdir/$sha_base.SHA" ]; then 181 | cat "$defdir/$sha_base.SHA" >>/tmp/vm-boot-protect-sha 182 | fi 183 | done 184 | if [ -e /tmp/vm-boot-protect-sha ]; then 185 | echo "Checking file hashes." |tee $errlog 186 | # Strip padding, get unique paths and switch path to $rw before check; 187 | # this allows hashes in $vmname.SHA to override ones in vms.all.SHA. 188 | sed 's/^ *//; s/ *$//; /^$/d;' /tmp/vm-boot-protect-sha \ 189 | | sort -u -k2,2 \ 190 | | sed -r 's|^(\S+\s+)/rw|\1'$rw'|' \ 191 | | sha256sum --strict -c >>$errlog; checkcode=$? 192 | fi 193 | 194 | # Divert startup on hash mismatch: 195 | if [ $checkcode != 0 ]; then 196 | abort_startup RELOCATE "Hash check failed!" 197 | fi 198 | 199 | remount_rw 200 | 201 | # Files mutable for del/copy operations 202 | cd $rw/home/user 203 | chattr -R -f -i $chfiles $chfiles_add $chdirs $chdirs_add $privdirs $privdirs_add \ 204 | $rwbak/BAK-* 205 | cd /root 206 | 207 | 208 | # Deactivate private.img config dirs 209 | mkdir -p $rwbak 210 | for dir in $privdirs $privdirs_add; do # maybe use 'eval' for privdirs quotes/escaping 211 | # echo "Deactivate $dir" 212 | subdir=`echo $dir |sed -r 's|^/rw/||'` 213 | bakdir="$rwbak/BAK-$subdir" 214 | origdir="$rwbak/ORIG-$subdir" 215 | if [ -e "$bakdir" ] && [ ! -e "$origdir" ]; then 216 | mv "$bakdir" "$origdir" 217 | fi 218 | if [ -e "$bakdir" ]; then 219 | #chattr -R -i "$bakdir" 220 | rm -rf "$bakdir" 221 | fi 222 | mv "$rw/$subdir" "$bakdir" 223 | mkdir -p "$rw/$subdir" 224 | 225 | # Populate /home/user w skel files if it was in privdirs 226 | case "$subdir" in 227 | "home"|"home/"|"home/user"|"home/user/") 228 | # echo "Populating home dir" 229 | rm -rf /home/user $rw/home/user 230 | mount --bind -o nosuid,nodev $rw/home /home 231 | mkhomedir_helper user 232 | umount /home 233 | ;; 234 | esac 235 | done 236 | 237 | for vmset in vms.all $tags $vmname; do 238 | 239 | # Process whitelists... 240 | if [ -e $defdir/$vmset.whitelist ]; then 241 | cat $defdir/$vmset.whitelist \ 242 | | while read wlfile; do 243 | # Must begin with '/rw/' 244 | if echo $wlfile |grep -q "^\/rw\/"; then 245 | srcfile="`echo $wlfile |sed -r \"s|^/rw/(.+)$|$rwbak/BAK-\1|\"`" 246 | dstfile="`echo $wlfile |sed -r \"s|^/rw/(.+)$|$rw/\1|\"`" 247 | dstdir="`dirname \"$dstfile\"`" 248 | if [ ! -e "$srcfile" ]; then 249 | # echo "Whitelist entry not present in filesystem:" 250 | # echo "$srcfile" 251 | continue 252 | # For very large dirs: mv whole dir when entry ends with '/' 253 | elif echo $wlfile |grep -q "\/$"; then 254 | # echo "Whitelist mv $srcfile" 255 | # echo "to $dstfile" 256 | mkdir -p "$dstdir" 257 | mv -T "$srcfile" "$dstfile" 258 | else 259 | # echo "Whitelist cp $srcfile" 260 | mkdir -p "$dstdir" 261 | cp -a --link "$srcfile" "$dstdir" 262 | fi 263 | elif [ -n "$wlfile" ]; then 264 | echo "Whitelist path must begin with /rw/. Skipped." 265 | fi 266 | done 267 | fi 268 | 269 | # Copy default files... 270 | if [ -d $defdir/$vmset/rw ]; then 271 | # echo "Copy files from $defdir/$vmset/rw" 272 | cp -af $defdir/$vmset/rw/* $rw 273 | fi 274 | done 275 | 276 | vm_boot_finish 277 | 278 | fi 279 | 280 | # Remove backups if indicated 281 | if [ $save_backup = 0 ]; then 282 | chattr -R -f -i $rwbak 283 | rm -rf $rwbak 284 | fi 285 | 286 | if qsvc vm-boot-protect || qsvc vm-boot-protect-root; then 287 | echo "Preparing for unmount" 288 | make_immutable 289 | umount $rw 290 | fi 291 | 292 | # Keep configs invisible at runtime... 293 | if ! is_templatevm; then 294 | rm -rf "$defdir" $servicedir/vm-boot-tag* $servicedir/vm-boot-protect* $errlog 295 | fi 296 | exit 0 297 | --------------------------------------------------------------------------------