Debian DSA-4885-1 Critical: Netty Issues With HTTP Smuggling and DoS

Multiple security issues were discovered in Netty, a Java NIO
client/server framework, which could result in HTTP request smuggling,
denial of service or information disclosure.

For the stable distribution (buster), these problems have been fixed in
version 1:4.1.33-1+deb10u2.

We recommend that you upgrade your netty packages.

For the detailed security status of netty please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/netty

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/