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Tor Half-Closed Connection Stream Confusion

Tor Half-Closed Connection Stream Confusion
Posted Jul 15, 2021
Authored by Jann Horn, Google Security Research

Tor suffers from an issue where half-closed connection tracking ignores layer_hint and due to this, entry/middle relays can spoof RELAY_END cells on half-closed streams, which can lead to stream confusion between OP and exit.

tags | exploit, spoof
advisories | CVE-2021-34548
SHA-256 | 0544acc1f8cb71eaae260f7d2c03e6b0c3ebabe6b8549cd83018b8757f7db64a
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