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Medium 5.3
Rustls 0.23.13 before 0.23.45 TLS 1.3 Handshake Encryption Level Bypass
Rustls from 0.23.13 before 0.23.45 accepts TLS 1.3 handshake messages at the wrong encryption level when they follow a key-changing message in the same record, because Deframer::aligned does not enforce RFC 8446 record-boundary alignment. A peer or on-path at…
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Low 2.3
rustls 0.23.44 and 0.23.45 ECH Rejection Application Data Disclosure
rustls 0.23.44 and 0.23.45 contain an information disclosure vulnerability that sends application data buffered before the handshake completes to the client-facing server when Encrypted Client Hello is rejected. Because start_traffic() queues plaintext from C…
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Low 3.7
rustls before 0.23.46 Key Exchange Downgrade via Unauthenticated ServerHello
rustls before 0.23.46 contains a key exchange downgrade vulnerability that allows network attackers to poison the per-server-name key-exchange group record via an unauthenticated ServerHello. Attackers can answer one connection with a ServerHello selecting X2…
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Low 3.7
rustls before 0.23.46 Denial of Service via Brotli Certificate Decompression
rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large history window. Malicious peers can send a certificate with a fiv…
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Medium 4.0
Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 Secret Exposure via Debug
Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 contains an information disclosure vulnerability where derived Debug formatting of client session values exposes secret key material. Custom ClientSessionStore implementations that log Tls12ClientSess…
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High 7.5
Rustls vulnerable to an infinite loop in rustls::conn::ConnectionCommon::complete_io() with proper client input
Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, t…