Описание
tls-listener affected by the slow loris vulnerability with default configuration
Summary
With the default configuration of tls-listener, a malicious user can open 6.4 TcpStreams a second, sending 0 bytes, and can trigger a DoS.
Details
The default configuration options make any public service using TlsListener::new() vulnerable to a slow-loris DoS attack.
PoC
Running the HTTP TLS server example: https://github.com/tmccombs/tls-listener/blob/6c57dea2d9beb1577ae4d80f6eaf03aad4ef3857/examples/http.rs, then running the following script will prevent new connections to the server.
Impact
This is an instance of a slow-loris attack. This impacts any publically accessible service using the default configuration of tls-listener
Mitigation
Previous versions can mitigate this by passing a large value, such as usize::MAX as the parameter to Builder::max_handshakes.
Ссылки
- https://github.com/tmccombs/tls-listener/security/advisories/GHSA-2qph-qpvm-2qf7
- https://nvd.nist.gov/vuln/detail/CVE-2024-28854
- https://github.com/tmccombs/tls-listener/commit/d5a7655d6ea9e53ab57c3013092c5576da964bc4
- https://en.wikipedia.org/wiki/Slowloris_(computer_security)
- https://github.com/tmccombs/tls-listener/releases/tag/v0.10.0
- https://rustsec.org/advisories/RUSTSEC-2024-0341.html
Пакеты
tls-listener
<= 0.9.1
0.10.0
Связанные уязвимости
tls-listener is a rust lang wrapper around a connection listener to support TLS. With the default configuration of tls-listener, a malicious user can open 6.4 `TcpStream`s a second, sending 0 bytes, and can trigger a DoS. The default configuration options make any public service using `TlsListener::new()` vulnerable to a slow-loris DoS attack. This impacts any publicly accessible service using the default configuration of tls-listener in versions prior to 0.10.0. Users are advised to upgrade. Users unable to upgrade may mitigate this by passing a large value, such as `usize::MAX` as the parameter to `Builder::max_handshakes`.