Ubuntu alert USN-4532-1 (netty-3.9)

From:
             
 
Emilia Torino <emilia.torino@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-4532-1] Netty vulnerabilities
Date:
             
 
Tue, 22 Sep 2020 15:50:55 -0300
Message-ID:
             
 
<e9f64f3c-1409-7152-fd7c-7a9ef31b54ae@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4532-1
September 22, 2020

netty-3.9 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Netty.

Software Description:
- netty-3.9: Asynchronous event-driven network application framework

Details:

It was discovered that Netty incorrectly handled certain HTTP headers.
By sending an HTTP header with whitespace before the colon, a remote
attacker could possibly use this issue to perform an HTTP request
smuggling attack. (CVE-2019-16869)

It was discovered that Netty incorrectly handled certain HTTP headers.
By sending an HTTP header that lacks a colon, a remote attacker could
possibly use this issue to perform an HTTP request smuggling attack.
(CVE-2019-20444)

It was discovered that Netty incorrectly handled certain HTTP headers.
By sending a Content-Length header accompanied by a second
Content-Length header, or by a Transfer-Encoding header, a remote
attacker could possibly use this issue to perform an HTTP request
smuggling attack. (CVE-2019-20445)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  libnetty-3.9-java               3.9.9.Final-1+deb9u1build0.18.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4532-1
  CVE-2019-16869, CVE-2019-20444, CVE-2019-20445

Package Information:

https://launchpad.net/ubuntu/+source/netty-3.9/3.9.9.Fina...

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