Cross‑Layer State Confusion in libcurl: Credential & Key‑Material Persistence Across Redirect / Connection Reuse Boundaries
开放重定向 / 违反安全设计原则（按标题归类） / #3480641
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原文摘录
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Summary: This report describes a state‑level security invariant violation in libcurl where credential‑ or key‑related state may persist or be re‑applied across logical trust boundaries (redirects, connection reuse, or scheme transitions) without a formal invariant enforcing reset semantics. The …
原文中的代码
Invariant I: For any request r_i sent to origin O_i, any credential or key-material C must satisfy: C(r_i) is valid ⇔ TrustBoundary(r_i) == TrustBoundary(C) Where TrustBoundary is defined by: (scheme, authority, port, security context) Violation occurs if: C(r_i) ≠ ∅ AND …
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