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Potential fix for code scanning alert no. 12: Uncontrolled command line - #734

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alert-autofix-12
Sep 7, 2026
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Potential fix for code scanning alert no. 12: Uncontrolled command line#734
tester2024 merged 2 commits into
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alert-autofix-12

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Potential fix for https://github.com/MatrixTM/MHDDoS/security/code-scanning/12

General fix: ensure every user-influenced command argument is chosen from explicit allowlists (or deterministic canonical forms), and avoid passing request-derived values directly into Popen argument vectors.

Best fix here without changing functionality: in start_attack() (web/app.py), introduce a separate safe_cmd list for Popen where only pre-validated values are appended. Most values are already validated; the key improvement is to avoid directly appending request-derived filenames even after conditional checks, and instead map to fixed literals from allowlists. For reflector/proxylist, resolve to known safe filenames by membership lookup and fallback defaults before appending. Then call Popen(safe_cmd, ...) instead of Popen(cmd, ...). This preserves behavior while making command construction explicitly controlled and easier for CodeQL to recognize.

Suggested fixes powered by Copilot Autofix. Review carefully before merging.

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Comment thread web/app.py
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Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
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tester2024 marked this pull request as ready for review September 7, 2026 13:05
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tester2024 merged commit 4e0a61f into main Sep 7, 2026
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tester2024 deleted the alert-autofix-12 branch September 7, 2026 13:05
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3 participants