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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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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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add AppArmor confinement to processes started with --join and,
more importantly, --join-or-start
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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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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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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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Running `firejail --noprofile --private-bin=bash,ls ls -1Za /usr/bin`
shows that the SELinux labels are not correct:
```
user_u:object_r:user_tmpfs_t:s0 .
system_u:object_r:usr_t:s0 ..
user_u:object_r:user_tmpfs_t:s0 bash
user_u:object_r:user_tmpfs_t:s0 ls
```
After fixing this:
```
system_u:object_r:bin_t:s0 .
system_u:object_r:usr_t:s0 ..
system_u:object_r:shell_exec_t:s0 bash
system_u:object_r:bin_t:s0 ls
```
Most copied files and created directories should now have correct
labels (bind mounted objects keep their labels). This is useful to
avoid having to change the SELinux rules when using Firejail.
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see issue #3145
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see issue #3145
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print rejected character in invalid filenames
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issue #3001
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Caused build failure in Travis (due to lack of C99 mode):
sbox.c: In function ‘sbox_run_v’:
sbox.c:185:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int i = 3; i < max; i++)
^
sbox.c:185:3: note: use option -std=c99 or -std=gnu99 to compile your code
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Fixes #3135.
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Thanks @Micha-Btz for all the testing.
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issue #3130
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DHCP client support
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dhclient -6 fails if the interface to be configures has no link-local address.
This is especially problematic when only DHCPv6 is used
(e.g., --ip=none --ip6=dhcp), because the wait for a DHCPv4 lease is usually
ample time for the LL address to become available on the IPv6 link.
The LL address must not be tenative.
Therefore, this patch implements waiting for a non-tentative link-local
address in fnet for DHCPv6 configured interfaces.
The command fnet waitll <if> waits for an LL address on the interface <if>.
Currently, the maximum waiting time is 30 seconds,
and the kernel is polled through rtnetlink every 500 milliseconds.
These values seem sufficient for virtual bridged networks,
e.g., libvirt NAT networks.
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