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Address more spurious alerts #202

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Jan 27, 2017
Merged

Address more spurious alerts #202

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11 changes: 7 additions & 4 deletions rules/falco_rules.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -200,11 +200,14 @@
# permissive. Ideally, you should change this macro to explicitly
# scope the python scripts to a specific directory (namely, your
# configured remote_tmp directory).
- macro: ansible_running_python
- macro: parent_ansible_running_python
condition: proc.pname in (python, pypy) and proc.pcmdline contains ansible

- macro: ansible_running_python
condition: proc.name in (python, pypy) and proc.cmdline contains ansible

- macro: python_running_denyhosts
condition: proc.pname=python and proc.pcmdline contains /usr/sbin/denyhosts
condition: proc.name=python and (proc.cmdline contains /usr/sbin/denyhosts or proc.cmdline contains /usr/local/bin/denyhosts.py)

# As a part of kernel upgrades, dpkg will spawn a perl script with the
# name linux-image-N.N. This macro matches that.
Expand Down Expand Up @@ -325,7 +328,7 @@
logrotate, ansible, less, adduser, pycompile, py3compile,
pyclean, py3clean, pip, pip2, ansible-playboo, man-db,
init, pluto, mkinitramfs, unattended-upgr, watch, sysdig,
landscape-sysin, nessusd
landscape-sysin, nessusd, PM2
]

- rule: Run shell untrusted
Expand All @@ -335,7 +338,7 @@
and shell_procs
and proc.pname exists
and not proc.pname in (cron_binaries, shell_binaries, known_shell_spawn_binaries, docker_binaries, k8s_binaries, package_mgmt_binaries)
and not ansible_running_python
and not parent_ansible_running_python
and not parent_linux_image_upgrade_script
output: "Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline pcmdline=%proc.pcmdline)"
priority: WARNING
Expand Down