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remove netfilter from profiles with net none
allow Viber to use dig, dig is in its private-bin, so I assume that it
need it.
blacklist resolvectl which can also be used for dns lookups
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new condition: HAS_NOSOUND
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patch for xdg-dbus-proxy
```
--- a/etc/gnome-screenshot.profile
+++ b/etc/gnome-screenshot.profile
@@ -45,3 +45,8 @@ private-bin gnome-screenshot
private-dev
private-etc dconf,fonts,gtk-3.0,localtime,machine-id
private-tmp
+
+dbus-user filter
+dbus-user.own org.gnome.Screenshot
+dbus-user.talk org.gnome.Shell.Screenshot
+dbus-system block
```
patch for whitelist-runuser-common.inc
```
--- a/etc/gnome-screenshot.profile
+++ b/etc/gnome-screenshot.profile
@@ -17,11 +17,8 @@ include disable-passwdmgr.inc
include disable-programs.inc
include disable-xdg.inc
-whitelist ${RUNUSER}/bus
-whitelist ${RUNUSER}/pulse
-whitelist ${RUNUSER}/gdm/Xauthority
-whitelist ${RUNUSER}/wayland-0
include whitelist-usr-share-common.inc
+include whitelist-runuser-common.inc
include whitelist-var-common.inc
apparmor
```
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* fix private-lib, closes #3233
* make private-etc and private-lib opt-in
see https://github.com/netblue30/firejail/issues/3233#issuecomment-589871765
disable-devel.inc: remove duplicated line
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$PATH and $XDG_DATA_DIRS can contain subdirs of flatpak/exports,
some applications crash if they cann't access these files.
Layout on my system:
~/.local/share/flatpak/exports
|-bin
|-share
|-applications
|-icons
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previous commit 3d35c039074cc11fbacf8de5bc8cb1a0952ceae4
issue #3277
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issue #3277
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remount hardening: move to file descriptor based mounts
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file-roller fails to extract archives without access to bash
Noticed on LMDE 4 (Debian 10 base) with Cinnamon desktop
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* discord 0.10 | fix #3247
* revert private-bin move & use disable-exec
* fix slack, see https://github.com/netblue30/firejail/issues/2946#issuecomment-598612520
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zoom.profile: fix zoom SSO workflow
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The zoom SSO workflow launches an embedded sandboxed browser
(QtWebEngineProcess) which requires chroot and netlink to work.
Fixes #3272
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See also: https://bugs.debian.org/948656
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add AppArmor confinement to processes started with --join and,
more importantly, --join-or-start
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conky needs lua
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Place `include allow-lua.inc` above the other includes
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Replace `noblacklist /usr/lib/liblua*` by including `allow-lua.inc`
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See issue #3250
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add xournal.profile
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Fixes #3221.
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blacklist process_vm_readv and process_vm_writev
while we're at it also remove duplicate iopl blacklisting
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See discussion in https://github.com/netblue30/firejail/commit/56b60dfd0ec5227318f21409093eca965baf136a.
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Thanks to @rusty-snake in https://github.com/netblue30/firejail/commit/56b60dfd0ec5227318f21409093eca965baf136a#r37460831.
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* more lua blacklisting in disable-interpreters.inc
* add some paths to allow-lua.inc
* Revert blacklisting /usr/include/lauxlib.h in disable-interpreters.inc
/usr/include/lauxlib.h is handled in disable-devel.inc. Thanks to @rusty-snake for pointing that out.
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* allow lua in mpv.profile
* fix allow-lua.inc for mpv
* extra lua blacklisting for mpv
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Harden sbox_run by using fexecve instead of execvp
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The check is already performed by sbox_run
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We require the command passed to sbox_run to be an absolute path,
and avoid resolving PATH.
Note that PATH-based attacks were already difficult to pull of,
because sbox_run clears the environment before executing the command.
This patch hopefully makes then impossible.
As an additional precaution, we check that the executable is owned by either
the root user or the root group, and is not world-writable.
The use of O_PATH, fstat and fexecve aims to prevent a race condition when
the invoked path (e.g., /usr/lib/firejail/fnet) is owned by root
or is a symlink to a binary owned by root, but the containing directory
(e.g., /usr/lib/firejail) is somehow owned by a user.
This is quite unlikely (but may be possible by abusing some other setuid
executable is a specific way), and would allow swapping the binary or symlink
to a malicious one after we checked ownership.
"Locking in" the file descriptor gets rid of the race condition.
We have to get rid of the `/proc/[pid]/comm` check in dhcp_read_pidfile,
because fexecve sets the comm value to the fd being exec'd (e.g., 3)
instead of the name of the file.
This is not a problem, unless by the time we pick up the pidfile of dhclient,
it has already crashed, and the pid number have wrapper around.
Needless to say, this is extremely unlikely
(and does not cause a security issue, anyways).
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Harden dhcp by checking for /sbin/dhclient
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Running /sbin/dhclient or /usr/sbin/dhclient avoids PATH-based vulnerabilities.
We also check that the dhclient is owned by root.
We take an approach similar to netfiler.c and assume that the required binary
ar in /sbin or /usr/sbin, or (like on Arch) /sbin is a symlink to /usr/bin.
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- spelling suggestion from @glitsj16 on fda62527
- drop python2 from openshot it never has a python2 version
- #3126 note in manpage: cannot combine --private with --private=
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* Add profile for offical Linux Teams application
* fix: add mkdir suggestions in Teams profile
* Merge suggestions for Teams profile
* Add suggestion to Teams profile
* Add Teams to firecfg.config
* Add paths from Teams profile to disable-programs
* Remove the duplicated whitelist for downloads in Teams profile
Co-Authored-By: rusty-snake <print_hello_world+GitHub@protonmail.com>
* Cleanup teams profile after testing
* Add comment to Teams profile
Co-authored-by: rusty-snake <print_hello_world+GitHub@protonmail.com>
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rusty-snake
glitsj16
netblue30
smitsohu
startx2017
Fred Barclay
Peter Sanford
Reiner Herrmann
curiosityseeker
Hans-Christoph Steiner
Kristóf Marussy
Andreas Hunkeler
Quentin Minster