| Commit message (Collapse) | Author | Age |
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Implement netns in profiles, closes #3846
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issue #3784
related commit 4bc92b8fd0a5c22c7d4c6f9323378501c60ff149
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cf. 9eb9e8d4c1b8995f0e7af4d604f3becd5dc91f62
No need to expect pid's in profile files.
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--tmpfs was added in 0.9.14 and restricted to root only in 0.9.38
due to priv-esc CVE-2016-10117 (e.g. --tmpfs=/etc and modify
/etc/sudoers). This commit reintroduce it for normal users, if the
realpath of it is inside users-home.
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Remove environment variables with --rmenv immediately. This fixes
removing long environment variables (LS_COLORS generated by vivid),
previously the length filter would trip before the command was
processed.
This changes user visible behavior slightly, for example --rmenv=LANG
now applies also to Firejail, while earlier it would only apply to
sandboxed program.
Partially fixes #3673, but not handling `rmenv` in profiles.
Also suggest --rmenv when there are problems with enviroment
variables.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
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Allow `log` as an alternative seccomp error action instead of killing
or returning an errno code.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
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closes #1139
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--dbus-user.log and --dbus-system.log instruct xdg-dbus-proxy to log
interactions with the session and system buses, respectively.
--dbus-log= can specify the location of the log file. If no location is
specified, log output is written to stdout.
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This allows setting per-member and per-object path policies for
xdg-dbus-proxy.
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The SEE policy of xdg-dbus-proxy allows clients to see objects and bus
names, but not interact with them. The --call and --broadcast can allow
interactions with objects that have the SEE policy set. Profile support
for these proxy options will be added in a future commit.
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This patch also allows setting the DBus policies to filter even if
xdg-dbus-proxy is not installed. In that case, unrestricted access to the bus is
allowed, but a warning is emitted.
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The options --dbus-user.talk, --dbus-user.own, --dbus-system.talk, and
--dbus-system.own control which names can be accessed and owned on the user and
system buses.
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Allow setting a separate policy for the user and system buses.
For now, the filter policy is equivalent to the none (block) policy.
Future commits will add more configuration options and filters.
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Let user specify the action when seccomp filters trigger:
- errno name like EPERM (default) or ENOSYS: return errno and let the process continue.
- 'kill': kill the process as previous versions
The default action is EPERM, but killing can still be specified with
syscall:kill syntax or globally with seccomp-error-action=kill. The
action can be also overridden /etc/firejail/firejail.config file.
Not killing the process weakens Firejail slightly when trying to
contain intrusion, but it may also allow tighter filters if the
only alternative is to allow a system call.
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System calls (names and numbers) are not exactly the same for 32 bit
and 64 bit architectures. Let's allow defining separate filters for
32-bit arch using seccomp.32, seccomp.32.drop, seccomp.32.keep. This
is useful for mixed 64/32 bit application environments like Steam and
Wine.
Implement protocol and mdwx filtering also for 32 bit arch. It's still
better to block secondary archs completely if not needed.
Lists of supported system calls are also updated.
Warn if preload libraries would be needed due to trace, tracelog or
postexecseccomp (seccomp.drop=execve etc), because a 32-bit dynamic
linker does not understand the 64 bit preload libraries.
Closes #3267.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
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* move copyright statement to 2020
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Currently, --ip=dhcp is equivalent to --ip=none
and --ip6=dhcp does nothing either, except for parsing correctly
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Add private-cwd option to control working directory within jail
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childs exit code regardless of the termination ordering of orphaned children
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removing the branches checking for "." has no effect,
as calling openat on this just reopens the previous path element.
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