Fix permissions not reset on overwrite with --config-dir.#2501
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Fix permissions not reset on overwrite with --config-dir.#2501
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Pull request overview
This PR fixes a high-severity security issue where overwriting existing identity files under --config-dir could preserve a previously-insecure Unix file mode (e.g., 0644), leaving newly-written signer secrets world-readable.
Changes:
- Explicitly chmod overwritten config files to
0600after writing (Unix). - Thread the active config root into
fix_config_permissions(...)so permission repair can target the correct directory. - Add a regression test ensuring overwrites reset file permissions to
0600.
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What
Fix permissions not reset on overwrite with --config-dir.
Why
Close #2488
Known limitations
N/A