🛡️ Sentinel: [HIGH] Fixed insecure file creation permissions

[acebytes]

🚨 Severity: HIGH
💡 Vulnerability: Fixed insecure file creation permissions in SysctlJournal.swift.
🎯 Impact: Fixed insecure file creation permissions to prevent unauthorized processes from intercepting or modifying the file before restricted permissions are applied.
🔧 Fix: Fixed insecure file creation permissions by replacing Data.write(to:) with POSIX open() using O_CREAT | O_WRONLY | O_EXCL | O_CLOEXEC flags and setting the mode natively at the moment of creation.
✅ Verification: Verify that the temporary journal files are created securely without race conditions.

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PR created automatically by Jules for task 17766580260451430475 started by @acebytes

[google-labs-jules]

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[acebytes]

Closing as duplicate. The Sentinel bot has opened many PRs for the same TOCTOU/insecure-file-creation issue in Sources/CacheoutHelperLib/SysctlJournal.swift. Consolidating on #396 as the canonical (most recent iteration). If the canonical is merged or rejected, a fresh PR can replace it.

[google-labs-jules]

Closing as duplicate. The Sentinel bot has opened many PRs for the same TOCTOU/insecure-file-creation issue in Sources/CacheoutHelperLib/SysctlJournal.swift. Consolidating on #396 as the canonical (most recent iteration). If the canonical is merged or rejected, a fresh PR can replace it.

Understood. Acknowledging that this work is a duplicate and stopping work on this task.