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https://git.proxmox.com/git/mirror_lxc
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807f4c9e1e
Restrict signal and ptrace for processes running under the container profile. Rules based on AppArmor base abstraction. Add unix rules for processes running under the container profile. Signed-off-by: Jamie Strandboge <jamie@canonical.com> Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com> Acked-by: Stéphane Graber <stgraber@ubuntu.com>
89 lines
2.9 KiB
Plaintext
89 lines
2.9 KiB
Plaintext
network,
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capability,
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file,
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umount,
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# dbus, signal, ptrace and unix are only supported by recent apparmor
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# versions. Comment them if the apparmor parser doesn't recognize them.
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# This also needs additional rules to reach outside of the container via
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# DBus, so just let all of DBus within the container.
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dbus,
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# Allow us to receive signals from anywhere. Note: if per-container profiles
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# are supported, for container isolation this should be changed to something
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# like:
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# signal (receive) peer=unconfined,
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# signal (receive) peer=/usr/bin/lxc-start,
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signal (receive),
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# Allow us to send signals to ourselves
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signal peer=@{profile_name},
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# Allow other processes to read our /proc entries, futexes, perf tracing and
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# kcmp for now (they will need 'read' in the first place). Administrators can
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# override with:
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# deny ptrace (readby) ...
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ptrace (readby),
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# Allow other processes to trace us by default (they will need 'trace' in
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# the first place). Administrators can override with:
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# deny ptrace (tracedby) ...
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ptrace (tracedby),
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# Allow us to ptrace ourselves
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ptrace peer=@{profile_name},
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# Allow receive via unix sockets from anywhere. Note: if per-container
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# profiles are supported, for container isolation this should be changed to
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# something like:
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# unix (receive) peer=(label=unconfined),
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unix (receive),
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# Allow all unix in the container
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unix peer=(label=@{profile_name}),
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# ignore DENIED message on / remount
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deny mount options=(ro, remount) -> /,
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deny mount options=(ro, remount, silent) -> /,
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# allow tmpfs mounts everywhere
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mount fstype=tmpfs,
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# allow hugetlbfs mounts everywhere
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mount fstype=hugetlbfs,
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# allow mqueue mounts everywhere
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mount fstype=mqueue,
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# allow fuse mounts everywhere
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mount fstype=fuse.*,
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# allow bind mount of /lib/init/fstab for lxcguest
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mount options=(rw, bind) /lib/init/fstab.lxc/ -> /lib/init/fstab/,
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# deny writes in /proc/sys/fs but allow binfmt_misc to be mounted
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mount fstype=binfmt_misc -> /proc/sys/fs/binfmt_misc/,
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deny @{PROC}/sys/fs/** wklx,
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# allow efivars to be mounted, writing to it will be blocked though
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mount fstype=efivarfs -> /sys/firmware/efi/efivars/,
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# block some other dangerous paths
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deny @{PROC}/sysrq-trigger rwklx,
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deny @{PROC}/mem rwklx,
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deny @{PROC}/kmem rwklx,
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# deny writes in /sys except for /sys/fs/cgroup, also allow
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# fusectl, securityfs and debugfs to be mounted there (read-only)
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mount fstype=fusectl -> /sys/fs/fuse/connections/,
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mount fstype=securityfs -> /sys/kernel/security/,
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mount fstype=debugfs -> /sys/kernel/debug/,
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deny mount fstype=debugfs -> /var/lib/ureadahead/debugfs/,
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mount fstype=proc -> /proc/,
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mount fstype=sysfs -> /sys/,
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deny /sys/firmware/efi/efivars/** rwklx,
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deny /sys/kernel/security/** rwklx,
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mount options=(move) /sys/fs/cgroup/cgmanager/ -> /sys/fs/cgroup/cgmanager.lower/,
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