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15 lines
1.5 KiB
Markdown
15 lines
1.5 KiB
Markdown
# Sentinel's Journal
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## 2026-02-07 - Telegram Bot Authorization Bypass
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**Vulnerability:** The Telegram Deployment Bot (`scripts/telegram_deploy_bot.py`) contained a "Fail Open" vulnerability where omitting the `TELEGRAM_ALLOWED_USER_IDS` environment variable resulted in granting access to *all* Telegram users instead of *none*.
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**Learning:** Security controls must default to deny (Fail Closed). Implicitly allowing access when configuration is missing creates silent vulnerabilities that are hard to detect until exploited.
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**Prevention:** Ensure all authorization checks explicitly return `False` or throw an exception if the access control list is empty or undefined. Never default to `True` in security-critical paths.
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## 2026-02-13 - [Documentation] Cloudflare Nameservers and Domain Unification
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- Updated Cloudflare nameservers to daisy.ns.cloudflare.com and rocco.ns.cloudflare.com.
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- Unified domain name to lengkundee01.org across CNAME and PWA documentation.
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## 2026-02-14 - Information Leak via Error Messages
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**Vulnerability:** The web dashboard (`scripts/web_dashboard.py`) exposed raw exception messages directly to users in 500 responses. This could leak internal details like file paths or stack traces.
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**Learning:** Never return raw exception strings to users. Generic error messages ("Internal Server Error") should be shown to users while detailed errors are logged securely on the server.
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**Prevention:** Catch all exceptions at the route level, log the details to stderr/logging, and return a sanitized, generic error message to the client.
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