fix: use quote with command, shell and validate with variable #298
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spetrosi
reviewed
Sep 6, 2024
Jakuje
commented
Sep 6, 2024
This avoids issues if file names are not safepaths.
Skip quotation only if variable is checked. Add test suit to excercise some quote use cases.
Ensure systemd.unit contents is robust. This disables possibility to
have something that needs to be quoted there. But as ansible lacks
proper way to quote systemd unit files (see man systemd.syntax, rules
are not shell rules), it is better to fail such configs. If you are
trying to do that, you are doing it wrong anyway or have malicious
intent.
Also ensure similar issue with sysctl.conf.
Issue can be seen with `tests_hostkeys_unsafe_path.yml`, when adding
following to role params:
sshd_install_service: true
sshd_config_file: "{{ ansible_facts.env.TMPDIR }}/sshd.d/foo.conf"
sshd_binary: "{{ ansible_facts.env.TMPDIR }}/sshd"
__sshd_runtime_directory: "{{ ansible_facts.env.TMPDIR }}/run"
Signed-off-by: Jakub Jelen <[email protected]>
Signed-off-by: Jakub Jelen <[email protected]>
Signed-off-by: Jakub Jelen <[email protected]>
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... and explain better why this is problematic Drops also the check for internal variables as the user should not bother with these. Signed-off-by: Jakub Jelen <[email protected]>
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richm
approved these changes
Sep 9, 2024
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Is this ready for merge? |
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Yes, I do not have anything else to add here. Feel free to merge when needed. |
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This is the replacement for the stale PR #245, where the reporter never came back to fix the CI issues, but we still consider that useful change.
Enhancement: Use quote command when calling shell/command modules.
Reason: The user suplied variables could split if they contain whitespace and cause unexpected behavior.
Result: User input is validated.
Issue Tracker Tickets (Jira or BZ if any): -