Debian 10: DLA-3083-1 Critical: Puma DoS and Request Smuggling Threats

CVE-2021-29509

Keepalive Connections Causing Denial Of Service in puma.

CVE-2021-41136

puma with a proxy which forwards HTTP header values which contain
the LF character could allow HTTP request smugggling. A client
could smuggle a request through a proxy, causing the proxy to send
a response back to another unknown client.

CVE-2022-23634

puma may not always call `close` on the response body. Rails,
prior to version `7.0.2.2`, depended on the response body being
closed in order for its `CurrentAttributes` implementation to work
correctly. The combination of these two behaviors (Puma not
closing the body + Rails' Executor implementation) causes
information leakage.

CVE-2022-24790

using Puma behind a proxy that does not properly validate that the
incoming HTTP request matches the RFC7230 standard, Puma and the
frontend proxy may disagree on where a request starts and ends.