RUSTSEC-2024-0399

vendorUSosv

rustls network-reachable panic in `Acceptor::accept`

view advisory published 2024-11-22Licence: CC0-1.0

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use `rustls::server::Acceptor::accept()` are affected. Servers that use `tokio-rustls`'s `LazyConfigAcceptor` API are affected. Servers that use `tokio-rustls`'s `TlsAcceptor` API are not affected. Servers that use `rustls-ffi`'s `rustls_acceptor_accept` API are affected.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2024-11738US	high7.5	0.73% (54th)	—	2024-12-06
A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service (panic) via a fragmented TLS ClientHello message.

references

External citations — patches, advisories, analysis.

https://crates.io/crates/rustlsPACKAGE
https://github.com/rustls/rustls/issues/2227REPORT
https://rustsec.org/advisories/RUSTSEC-2024-0399.htmlADVISORY

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