A netty security update has been released for Debian GNU/Linux 8 LTS.

Package : netty
Version : 1:3.2.6.Final-2+deb8u2
CVE ID : CVE-2019-20444 CVE-2019-20445 CVE-2020-7238
Debian Bug : 950966 950967

Several vulnerabilities were discovered in the HTTP server provided by
Netty, a Java NIO client/server socket framework:

CVE-2019-20444

HttpObjectDecoder.java allows an HTTP header that lacks a colon,
which might be interpreted as a separate header with an incorrect
syntax, or might be interpreted as an "invalid fold."

CVE-2019-20445

HttpObjectDecoder.java allows a Content-Length header to be
accompanied by a second Content-Length header, or by a
Transfer-Encoding header.

CVE-2020-7238

Netty allows HTTP Request Smuggling because it mishandles
Transfer-Encoding whitespace (such as a
[space]Transfer-Encoding:chunked line) and a later Content-Length
header.

For Debian 8 "Jessie", these problems have been fixed in version
1:3.2.6.Final-2+deb8u2.

We recommend that you upgrade your netty packages.

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