Project PUX — Billing and Desktop Security Review
Summary
An anonymized source review of a real-time collaboration product, focused on authorization, billing, desktop trust boundaries and distribution controls.
Document record
- Author
- Eduardo Camarillo [Noir0x63]
- Published
- Version
- v1.0
- Language
- English
Scope and method
The review covered the web, Electron, mobile and Supabase components available in the assessed repository state. Analysis followed data and authorization flows from externally influenced inputs to database, billing, token-issuance and desktop IPC operations. A separate review pass was used to challenge the initial conclusions.
The application name and implementation details that would identify the private engagement have been withheld. This record therefore documents the method and representative issue classes, not a reproducible public advisory.
Representative observations
- Several database functions executed with elevated privileges and required tighter caller and row-level authorization checks.
- Billing state transitions needed server-side validation so that client-controlled state could not determine entitlement.
- Token issuance and live-session joins required an explicit relationship check between the authenticated user and the requested resource.
- Electron IPC handlers and installation paths expanded the trust boundary beyond the web application and warranted independent input validation and distribution integrity controls.
Recurring patterns
The most consequential issues were boundary errors rather than isolated unsafe functions: trusted database routines callable from broader contexts, client-visible state treated as authoritative, and desktop capabilities exposed without a narrow allowlist. The remediation notes grouped these by root cause so related call sites could be reviewed together.
Limitations
This was principally a source review with targeted verification, not a production infrastructure assessment. Findings and remediation states apply to the repository snapshot reviewed at the stated date. Absence of a finding in this summary is not evidence that a component is free of defects.