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[SECURITY] [DLA 2365-1] netty-3.9 security update

Debian LTS Advisory DLA-2365-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                  Roberto C. Sánchez
September 04, 2020                            https://wiki.debian.org/LTS

Package        : netty-3.9
Version        : 3.9.9.Final-1+deb9u1
CVE ID         : CVE-2019-16869 CVE-2019-20444 CVE-2019-20445
Debian Bug     : 941266 950966 950967

Several vulnerabilities have been discovered in netty-3.9, a Java NIO
client/server socket framework.


    Netty before 4.1.42.Final mishandles whitespace before the colon in
    HTTP headers (such as a "Transfer-Encoding : chunked" line), which
    leads to HTTP request smuggling.


    HttpObjectDecoder.java in Netty before 4.1.44 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


    HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length
    header to be accompanied by a second Content-Length header, or by a
    Transfer-Encoding header.

For Debian 9 stretch, these problems have been fixed in version

We recommend that you upgrade your netty-3.9 packages.

For the detailed security status of netty-3.9 please refer to
its security tracker page at:

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

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