2021-08-25 16:44:26 +00:00
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#!/usr/bin/env bash
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# shellcheck disable=SC2016
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set -eux
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systemd-analyze log-level debug
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mkdir -p /tmp/img/usr/lib/systemd/system/
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mkdir -p /tmp/img/opt/
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touch /tmp/img/opt/script0.sh
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chmod +x /tmp/img/opt/script0.sh
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cat <<EOF >/tmp/img/usr/lib/systemd/system/testfile.service
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[Service]
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ExecStart = /opt/script0.sh
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EOF
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set +e
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# Default behaviour is to recurse through all dependencies when unit is loaded
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systemd-analyze verify --root=/tmp/img/ testfile.service \
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&& { echo 'unexpected success'; exit 1; }
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# As above, recurses through all dependencies when unit is loaded
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systemd-analyze verify --recursive-errors=yes --root=/tmp/img/ testfile.service \
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&& { echo 'unexpected success'; exit 1; }
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# Recurses through unit file and its direct dependencies when unit is loaded
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systemd-analyze verify --recursive-errors=one --root=/tmp/img/ testfile.service \
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&& { echo 'unexpected success'; exit 1; }
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set -e
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# zero exit status since dependencies are ignored when unit is loaded
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systemd-analyze verify --recursive-errors=no --root=/tmp/img/ testfile.service
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rm /tmp/img/usr/lib/systemd/system/testfile.service
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cat <<EOF >/tmp/testfile.service
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[Unit]
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foo = bar
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[Service]
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ExecStart = echo hello
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EOF
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cat <<EOF >/tmp/testfile2.service
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[Unit]
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Requires = testfile.service
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[Service]
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ExecStart = echo hello
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EOF
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# Zero exit status since no additional dependencies are recursively loaded when the unit file is loaded
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systemd-analyze verify --recursive-errors=no /tmp/testfile2.service
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set +e
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2021-09-04 22:12:50 +00:00
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# Non-zero exit status since all associated dependencies are recusively loaded when the unit file is loaded
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2021-08-25 16:44:26 +00:00
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systemd-analyze verify --recursive-errors=yes /tmp/testfile2.service \
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&& { echo 'unexpected success'; exit 1; }
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set -e
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rm /tmp/testfile.service
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rm /tmp/testfile2.service
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cat <<EOF >/tmp/testfile.service
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[Service]
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ExecStart = echo hello
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EOF
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2021-09-29 06:52:39 +00:00
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# Prevent regression from #13380 and #20859 where we can't verify hidden files
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cp /tmp/testfile.service /tmp/.testfile.service
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systemd-analyze verify /tmp/.testfile.service
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rm /tmp/.testfile.service
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2021-08-25 16:44:26 +00:00
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# Zero exit status since the value used for comparison determine exposure to security threats is by default 100
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systemd-analyze security --offline=true /tmp/testfile.service
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set +e
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#The overall exposure level assigned to the unit is greater than the set threshold
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systemd-analyze security --threshold=90 --offline=true /tmp/testfile.service \
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&& { echo 'unexpected success'; exit 1; }
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set -e
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rm /tmp/testfile.service
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cat <<EOF >/tmp/img/usr/lib/systemd/system/testfile.service
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[Service]
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ExecStart = echo hello
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PrivateNetwork = yes
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PrivateDevices = yes
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PrivateUsers = yes
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EOF
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# The new overall exposure level assigned to the unit is less than the set thresholds
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# Verifies that the --offline= option works with --root=
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systemd-analyze security --threshold=90 --offline=true --root=/tmp/img/ testfile.service
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# Added an additional "INVALID_ID" id to the .json to verify that nothing breaks when input is malformed
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# The PrivateNetwork id description and weight was changed to verify that 'security' is actually reading in
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# values from the .json file when required. The default weight for "PrivateNetwork" is 2500, and the new weight
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# assigned to that id in the .json file is 6000. This increased weight means that when the "PrivateNetwork" key is
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# set to 'yes' (as above in the case of testfile.service) in the content of the unit file, the overall exposure
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# level for the unit file should decrease to account for that increased weight.
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cat <<EOF >/tmp/testfile.json
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{"User_Or_DynamicUser":
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{"description_bad": "Service runs as root user",
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"weight": 2000,
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"range": 10
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},
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"SupplementaryGroups":
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{"description_good": "Service has no supplementary groups",
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"description_bad": "Service runs with supplementary groups",
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"description_na": "Service runs as root, option does not matter",
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"weight": 200,
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"range": 1
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},
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"PrivateDevices":
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{"description_good": "Service has no access to hardware devices",
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"description_bad": "Service potentially has access to hardware devices",
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"weight": 1000,
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"range": 1
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},
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"PrivateMounts":
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{"description_good": "Service cannot install system mounts",
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"description_bad": "Service may install system mounts",
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"weight": 1000,
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"range": 1
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},
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"PrivateNetwork":
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{"description_good": "Service doesn't have access to the host's network",
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"description_bad": "Service has access to the host's network",
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"weight": 6000,
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"range": 1
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},
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"PrivateTmp":
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{"description_good": "Service has no access to other software's temporary files",
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"description_bad": "Service has access to other software's temporary files",
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"weight": 1000,
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"range": 1
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},
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"PrivateUsers":
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{"description_good": "Service does not have access to other users",
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"description_bad": "Service has access to other users",
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"weight": 1000,
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"range": 1
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},
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"ProtectControlGroups":
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{"description_good": "Service cannot modify the control group file system",
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"description_bad": "Service may modify the control group file system",
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"weight": 1000,
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"range": 1
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},
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"ProtectKernelModules":
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{"description_good": "Service cannot load or read kernel modules",
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"description_bad": "Service may load or read kernel modules",
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"weight": 1000,
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"range": 1
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},
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"ProtectKernelTunables":
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{"description_good": "Service cannot alter kernel tunables (/proc/sys, …)",
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"description_bad": "Service may alter kernel tunables",
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"weight": 1000,
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"range": 1
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},
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"ProtectKernelLogs":
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{"description_good": "Service cannot read from or write to the kernel log ring buffer",
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"description_bad": "Service may read from or write to the kernel log ring buffer",
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"weight": 1000,
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"range": 1
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},
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"ProtectClock":
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{"description_good": "Service cannot write to the hardware clock or system clock",
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"description_bad": "Service may write to the hardware clock or system clock",
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"weight": 1000,
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"range": 1
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},
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"ProtectHome":
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{"weight": 1000,
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"range": 10
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},
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"ProtectHostname":
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{"description_good": "Service cannot change system host/domainname",
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"description_bad": "Service may change system host/domainname",
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"weight": 50,
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"range": 1
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},
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"ProtectSystem":
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{"weight": 1000,
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"range": 10
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},
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"RootDirectory_Or_RootImage":
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{"description_good": "Service has its own root directory/image",
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"description_bad": "Service runs within the host's root directory",
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"weight": 200,
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"range": 1
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},
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"LockPersonality":
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{"description_good": "Service cannot change ABI personality",
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"description_bad": "Service may change ABI personality",
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"weight": 100,
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"range": 1
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},
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"MemoryDenyWriteExecute":
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{"description_good": "Service cannot create writable executable memory mappings",
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"description_bad": "Service may create writable executable memory mappings",
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"weight": 100,
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"range": 1
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},
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"NoNewPrivileges":
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{"description_good": "Service processes cannot acquire new privileges",
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"description_bad": "Service processes may acquire new privileges",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_ADMIN":
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{"description_good": "Service has no administrator privileges",
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"description_bad": "Service has administrator privileges",
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"weight": 1500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SET_UID_GID_PCAP":
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{"description_good": "Service cannot change UID/GID identities/capabilities",
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"description_bad": "Service may change UID/GID identities/capabilities",
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"weight": 1500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_PTRACE":
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{"description_good": "Service has no ptrace() debugging abilities",
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"description_bad": "Service has ptrace() debugging abilities",
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"weight": 1500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_TIME":
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{"description_good": "Service processes cannot change the system clock",
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"description_bad": "Service processes may change the system clock",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_NET_ADMIN":
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{"description_good": "Service has no network configuration privileges",
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"description_bad": "Service has network configuration privileges",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_RAWIO":
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{"description_good": "Service has no raw I/O access",
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"description_bad": "Service has raw I/O access",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_MODULE":
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{"description_good": "Service cannot load kernel modules",
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"description_bad": "Service may load kernel modules",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_AUDIT":
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{"description_good": "Service has no audit subsystem access",
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"description_bad": "Service has audit subsystem access",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYSLOG":
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{"description_good": "Service has no access to kernel logging",
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"description_bad": "Service has access to kernel logging",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_NICE_RESOURCE":
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{"description_good": "Service has no privileges to change resource use parameters",
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"description_bad": "Service has privileges to change resource use parameters",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_MKNOD":
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{"description_good": "Service cannot create device nodes",
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"description_bad": "Service may create device nodes",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_CHOWN_FSETID_SETFCAP":
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{"description_good": "Service cannot change file ownership/access mode/capabilities",
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"description_bad": "Service may change file ownership/access mode/capabilities unrestricted",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_DAC_FOWNER_IPC_OWNER":
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{"description_good": "Service cannot override UNIX file/IPC permission checks",
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"description_bad": "Service may override UNIX file/IPC permission checks",
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"weight": 1000,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_KILL":
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{"description_good": "Service cannot send UNIX signals to arbitrary processes",
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"description_bad": "Service may send UNIX signals to arbitrary processes",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_NET_BIND_SERVICE_BROADCAST_RAW":
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{"description_good": "Service has no elevated networking privileges",
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"description_bad": "Service has elevated networking privileges",
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"weight": 500,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_BOOT":
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{"description_good": "Service cannot issue reboot()",
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"description_bad": "Service may issue reboot()",
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"weight": 100,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_MAC":
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{"description_good": "Service cannot adjust SMACK MAC",
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"description_bad": "Service may adjust SMACK MAC",
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"weight": 100,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_LINUX_IMMUTABLE":
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{"description_good": "Service cannot mark files immutable",
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"description_bad": "Service may mark files immutable",
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"weight": 75,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_IPC_LOCK":
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{"description_good": "Service cannot lock memory into RAM",
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"description_bad": "Service may lock memory into RAM",
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"weight": 50,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_CHROOT":
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{"description_good": "Service cannot issue chroot()",
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"description_bad": "Service may issue chroot()",
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"weight": 50,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_BLOCK_SUSPEND":
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{"description_good": "Service cannot establish wake locks",
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"description_bad": "Service may establish wake locks",
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"weight": 25,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_WAKE_ALARM":
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{"description_good": "Service cannot program timers that wake up the system",
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"description_bad": "Service may program timers that wake up the system",
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"weight": 25,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_LEASE":
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{"description_good": "Service cannot create file leases",
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"description_bad": "Service may create file leases",
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"weight": 25,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_TTY_CONFIG":
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{"description_good": "Service cannot issue vhangup()",
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"description_bad": "Service may issue vhangup()",
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"weight": 25,
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"range": 1
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},
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"CapabilityBoundingSet_CAP_SYS_PACCT":
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{"description_good": "Service cannot use acct()",
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"description_bad": "Service may use acct()",
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"weight": 25,
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|
|
"range": 1
|
|
|
|
},
|
|
|
|
"UMask":
|
|
|
|
{"weight": 100,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"KeyringMode":
|
|
|
|
{"description_good": "Service doesn't share key material with other services",
|
|
|
|
"description_bad": "Service shares key material with other service",
|
|
|
|
"weight": 1000,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"ProtectProc":
|
|
|
|
{"description_good": "Service has restricted access to process tree(/proc hidepid=)",
|
|
|
|
"description_bad": "Service has full access to process tree(/proc hidepid=)",
|
|
|
|
"weight": 1000,
|
|
|
|
"range": 3
|
|
|
|
},
|
|
|
|
"ProcSubset":
|
|
|
|
{"description_good": "Service has no access to non-process/proc files(/proc subset=)",
|
|
|
|
"description_bad": "Service has full access to non-process/proc files(/proc subset=)",
|
|
|
|
"weight": 10,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"NotifyAccess":
|
|
|
|
{"description_good": "Service child processes cannot alter service state",
|
|
|
|
"description_bad": "Service child processes may alter service state",
|
|
|
|
"weight": 1000,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RemoveIPC":
|
|
|
|
{"description_good": "Service user cannot leave SysV IPC objects around",
|
|
|
|
"description_bad": "Service user may leave SysV IPC objects around",
|
|
|
|
"description_na": "Service runs as root, option does not apply",
|
|
|
|
"weight": 100,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"Delegate":
|
|
|
|
{"description_good": "Service does not maintain its own delegated control group subtree",
|
|
|
|
"description_bad": "Service maintains its own delegated control group subtree",
|
|
|
|
"weight": 100,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictRealtime":
|
|
|
|
{"description_good": "Service realtime scheduling access is restricted",
|
|
|
|
"description_bad": "Service may acquire realtime scheduling",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictSUIDSGID":
|
|
|
|
{"description_good": "SUID/SGIDfilecreationbyserviceisrestricted",
|
|
|
|
"description_bad": "ServicemaycreateSUID/SGIDfiles",
|
|
|
|
"weight": 1000,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_user":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Servicecannotcreateusernamespaces",
|
|
|
|
"description_bad": "Servicemaycreateusernamespaces",
|
|
|
|
"weight": 1500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_mnt":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create file system namespaces",
|
|
|
|
"description_bad": "Service may create file system namespaces",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_ipc":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create IPC namespaces",
|
|
|
|
"description_bad": "Service may create IPC namespaces",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_pid":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create process namespaces",
|
|
|
|
"description_bad": "Service may create process namespaces",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_cgroup":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create cgroup namespaces",
|
|
|
|
"description_bad": "Service may create cgroup namespaces",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_net":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create network namespaces",
|
|
|
|
"description_bad": "Service may create network namespaces",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
2021-09-06 15:33:16 +00:00
|
|
|
"RestrictNamespaces_uts":
|
2021-08-25 16:44:26 +00:00
|
|
|
{"description_good": "Service cannot create hostname namespaces",
|
|
|
|
"description_bad": "Service may create hostname namespaces",
|
|
|
|
"weight": 100,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictAddressFamilies_AF_INET_INET6":
|
|
|
|
{"description_good": "Service cannot allocate Internet sockets",
|
|
|
|
"description_bad": "Service may allocate Internet sockets",
|
|
|
|
"weight": 1500,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictAddressFamilies_AF_UNIX":
|
|
|
|
{"description_good": "Service cannot allocate local sockets",
|
|
|
|
"description_bad": "Service may allocate local sockets",
|
|
|
|
"weight": 25,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictAddressFamilies_AF_NETLINK":
|
|
|
|
{"description_good": "Service cannot allocate netlink sockets",
|
|
|
|
"description_bad": "Service may allocate netlink sockets",
|
|
|
|
"weight": 200,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictAddressFamilies_AF_PACKET":
|
|
|
|
{"description_good": "Service cannot allocate packet sockets",
|
|
|
|
"description_bad": "Service may allocate packet sockets",
|
|
|
|
"weight": 1000,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"RestrictAddressFamilies_OTHER":
|
|
|
|
{"description_good": "Service cannot allocate exotic sockets",
|
|
|
|
"description_bad": "Service may allocate exotic sockets",
|
|
|
|
"weight": 1250,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"SystemCallArchitectures":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_swap":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_obsolete":
|
|
|
|
{"weight": 250,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_clock":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_cpu_emulation":
|
|
|
|
{"weight": 250,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_debug":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_mount":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_module":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_raw_io":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_reboot":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_privileged":
|
|
|
|
{"weight": 700,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"SystemCallFilter_resources":
|
|
|
|
{"weight": 700,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"IPAddressDeny":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"DeviceAllow":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
},
|
|
|
|
"AmbientCapabilities":
|
|
|
|
{"description_good": "Service process does not receive ambient capabilities",
|
|
|
|
"description_bad": "Service process receives ambient capabilities",
|
|
|
|
"weight": 500,
|
|
|
|
"range": 1
|
|
|
|
},
|
|
|
|
"INVALID_ID":
|
|
|
|
{"weight": 1000,
|
|
|
|
"range": 10
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EOF
|
|
|
|
|
|
|
|
# Reads in custom security requirements from the parsed .json file and uses these for comparison
|
|
|
|
systemd-analyze security --threshold=90 --offline=true \
|
|
|
|
--security-policy=/tmp/testfile.json \
|
|
|
|
--root=/tmp/img/ testfile.service
|
|
|
|
|
|
|
|
set +e
|
|
|
|
systemd-analyze security --threshold=50 --offline=true \
|
|
|
|
--security-policy=/tmp/testfile.json \
|
|
|
|
--root=/tmp/img/ testfile.service \
|
|
|
|
&& { echo 'unexpected success'; exit 1; }
|
|
|
|
set -e
|
|
|
|
|
|
|
|
rm /tmp/img/usr/lib/systemd/system/testfile.service
|
|
|
|
|
|
|
|
systemd-analyze log-level info
|
|
|
|
|
|
|
|
echo OK >/testok
|
|
|
|
|
|
|
|
exit 0
|